./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-atomic/lamport.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-atomic/lamport.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 c35b909c90b92e30d40b0275e3d226db26dbebaf39dc73a31d7e72eee871d214 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 22:24:59,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 22:24:59,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 22:24:59,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 22:24:59,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 22:24:59,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 22:24:59,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 22:24:59,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 22:24:59,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 22:24:59,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 22:24:59,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 22:24:59,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 22:24:59,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 22:24:59,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 22:24:59,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 22:24:59,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 22:24:59,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 22:24:59,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 22:24:59,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 22:24:59,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 22:24:59,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 22:24:59,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 22:24:59,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 22:24:59,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 22:24:59,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 22:24:59,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 22:24:59,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 22:24:59,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 22:24:59,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 22:24:59,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 22:24:59,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 22:24:59,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 22:24:59,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 22:24:59,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 22:24:59,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 22:24:59,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 22:24:59,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 22:24:59,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 22:24:59,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 22:24:59,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 22:24:59,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 22:24:59,138 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 22:24:59,175 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 22:24:59,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 22:24:59,176 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 22:24:59,177 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 22:24:59,177 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 22:24:59,178 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 22:24:59,178 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 22:24:59,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 22:24:59,179 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 22:24:59,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 22:24:59,180 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 22:24:59,180 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 22:24:59,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 22:24:59,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 22:24:59,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 22:24:59,181 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 22:24:59,181 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 22:24:59,181 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 22:24:59,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 22:24:59,181 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 22:24:59,182 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 22:24:59,182 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 22:24:59,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 22:24:59,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 22:24:59,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 22:24:59,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 22:24:59,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 22:24:59,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 22:24:59,183 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 22:24:59,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 22:24:59,184 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 22:24:59,184 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 22:24:59,184 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 22:24:59,184 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 22:24:59,185 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c35b909c90b92e30d40b0275e3d226db26dbebaf39dc73a31d7e72eee871d214 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 22:24:59,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 22:24:59,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 22:24:59,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 22:24:59,516 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 22:24:59,517 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 22:24:59,518 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/lamport.i [2023-08-31 22:25:00,706 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 22:25:00,988 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 22:25:00,989 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i [2023-08-31 22:25:00,998 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a40718411/29167554cae14be681f897984244a063/FLAGc6515c05f [2023-08-31 22:25:01,015 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a40718411/29167554cae14be681f897984244a063 [2023-08-31 22:25:01,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 22:25:01,018 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 22:25:01,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 22:25:01,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 22:25:01,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 22:25:01,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 10:25:01" (1/1) ... [2023-08-31 22:25:01,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e657803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:25:01, skipping insertion in model container [2023-08-31 22:25:01,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 10:25:01" (1/1) ... [2023-08-31 22:25:01,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 22:25:01,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 22:25:01,195 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-31 22:25:01,354 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-atomic/lamport.i[32156,32169] [2023-08-31 22:25:01,362 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-atomic/lamport.i[34083,34096] [2023-08-31 22:25:01,372 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 22:25:01,385 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 22:25:01,406 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-31 22:25:01,470 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-atomic/lamport.i[32156,32169] [2023-08-31 22:25:01,474 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-atomic/lamport.i[34083,34096] [2023-08-31 22:25:01,478 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 22:25:01,500 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 22:25:01,500 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 22:25:01,500 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 22:25:01,506 INFO L208 MainTranslator]: Completed translation [2023-08-31 22:25:01,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:25:01 WrapperNode [2023-08-31 22:25:01,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 22:25:01,508 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 22:25:01,508 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 22:25:01,508 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 22:25:01,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:25:01" (1/1) ... [2023-08-31 22:25:01,525 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:25:01" (1/1) ... [2023-08-31 22:25:01,540 INFO L138 Inliner]: procedures = 171, calls = 83, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2023-08-31 22:25:01,542 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 22:25:01,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 22:25:01,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 22:25:01,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 22:25:01,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:25:01" (1/1) ... [2023-08-31 22:25:01,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:25:01" (1/1) ... [2023-08-31 22:25:01,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:25:01" (1/1) ... [2023-08-31 22:25:01,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:25:01" (1/1) ... [2023-08-31 22:25:01,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:25:01" (1/1) ... [2023-08-31 22:25:01,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:25:01" (1/1) ... [2023-08-31 22:25:01,590 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:25:01" (1/1) ... [2023-08-31 22:25:01,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:25:01" (1/1) ... [2023-08-31 22:25:01,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 22:25:01,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 22:25:01,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 22:25:01,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 22:25:01,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:25:01" (1/1) ... [2023-08-31 22:25:01,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 22:25:01,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 22:25:01,634 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 22:25:01,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 22:25:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 22:25:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-08-31 22:25:01,672 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-08-31 22:25:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-31 22:25:01,672 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-31 22:25:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 22:25:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 22:25:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 22:25:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 22:25:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 22:25:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 22:25:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 22:25:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 22:25:01,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 22:25:01,675 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 22:25:01,817 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 22:25:01,826 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 22:25:02,112 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 22:25:02,119 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 22:25:02,119 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-08-31 22:25:02,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 10:25:02 BoogieIcfgContainer [2023-08-31 22:25:02,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 22:25:02,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 22:25:02,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 22:25:02,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 22:25:02,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 10:25:01" (1/3) ... [2023-08-31 22:25:02,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@816b692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 10:25:02, skipping insertion in model container [2023-08-31 22:25:02,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:25:01" (2/3) ... [2023-08-31 22:25:02,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@816b692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 10:25:02, skipping insertion in model container [2023-08-31 22:25:02,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 10:25:02" (3/3) ... [2023-08-31 22:25:02,128 INFO L112 eAbstractionObserver]: Analyzing ICFG lamport.i [2023-08-31 22:25:02,143 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 22:25:02,144 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-31 22:25:02,144 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 22:25:02,196 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 22:25:02,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 141 transitions, 298 flow [2023-08-31 22:25:02,290 INFO L130 PetriNetUnfolder]: 24/139 cut-off events. [2023-08-31 22:25:02,293 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 22:25:02,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 139 events. 24/139 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 300 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 101. Up to 5 conditions per place. [2023-08-31 22:25:02,299 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 141 transitions, 298 flow [2023-08-31 22:25:02,307 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 135 transitions, 282 flow [2023-08-31 22:25:02,310 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:25:02,328 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 135 transitions, 282 flow [2023-08-31 22:25:02,335 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 135 transitions, 282 flow [2023-08-31 22:25:02,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 135 transitions, 282 flow [2023-08-31 22:25:02,364 INFO L130 PetriNetUnfolder]: 24/135 cut-off events. [2023-08-31 22:25:02,370 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 22:25:02,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 135 events. 24/135 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 298 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 101. Up to 5 conditions per place. [2023-08-31 22:25:02,375 INFO L119 LiptonReduction]: Number of co-enabled transitions 5676 [2023-08-31 22:25:04,888 INFO L134 LiptonReduction]: Checked pairs total: 16119 [2023-08-31 22:25:04,888 INFO L136 LiptonReduction]: Total number of compositions: 96 [2023-08-31 22:25:04,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 22:25:04,906 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;@3f6af243, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:25:04,907 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-08-31 22:25:04,908 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-31 22:25:04,908 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 22:25:04,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:25:04,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 22:25:04,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:25:04,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:25:04,914 INFO L85 PathProgramCache]: Analyzing trace with hash 596, now seen corresponding path program 1 times [2023-08-31 22:25:04,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:25:04,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983033223] [2023-08-31 22:25:04,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:25:04,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:25:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:25:05,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:25:05,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:25:05,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983033223] [2023-08-31 22:25:05,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983033223] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:25:05,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:25:05,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 22:25:05,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567008626] [2023-08-31 22:25:05,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:25:05,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 22:25:05,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:25:05,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 22:25:05,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 22:25:05,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 237 [2023-08-31 22:25:05,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 73 transitions, 158 flow. Second operand has 2 states, 2 states have (on average 125.5) internal successors, (251), 2 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:05,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:25:05,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 237 [2023-08-31 22:25:05,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:25:05,412 INFO L130 PetriNetUnfolder]: 1891/3041 cut-off events. [2023-08-31 22:25:05,412 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2023-08-31 22:25:05,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5722 conditions, 3041 events. 1891/3041 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 16691 event pairs, 1072 based on Foata normal form. 44/1864 useless extension candidates. Maximal degree in co-relation 5430. Up to 2638 conditions per place. [2023-08-31 22:25:05,436 INFO L137 encePairwiseOnDemand]: 230/237 looper letters, 48 selfloop transitions, 0 changer transitions 0/66 dead transitions. [2023-08-31 22:25:05,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 240 flow [2023-08-31 22:25:05,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 22:25:05,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 22:25:05,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 305 transitions. [2023-08-31 22:25:05,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6434599156118144 [2023-08-31 22:25:05,459 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 305 transitions. [2023-08-31 22:25:05,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 305 transitions. [2023-08-31 22:25:05,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:25:05,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 305 transitions. [2023-08-31 22:25:05,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 152.5) internal successors, (305), 2 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:05,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:05,495 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:05,497 INFO L175 Difference]: Start difference. First operand has 63 places, 73 transitions, 158 flow. Second operand 2 states and 305 transitions. [2023-08-31 22:25:05,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 240 flow [2023-08-31 22:25:05,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 232 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 22:25:05,503 INFO L231 Difference]: Finished difference. Result has 58 places, 66 transitions, 136 flow [2023-08-31 22:25:05,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=136, PETRI_PLACES=58, PETRI_TRANSITIONS=66} [2023-08-31 22:25:05,507 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -5 predicate places. [2023-08-31 22:25:05,508 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 66 transitions, 136 flow [2023-08-31 22:25:05,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 125.5) internal successors, (251), 2 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:05,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:25:05,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-31 22:25:05,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 22:25:05,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:25:05,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:25:05,510 INFO L85 PathProgramCache]: Analyzing trace with hash 589714, now seen corresponding path program 1 times [2023-08-31 22:25:05,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:25:05,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565443735] [2023-08-31 22:25:05,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:25:05,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:25:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:25:05,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:25:05,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:25:05,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565443735] [2023-08-31 22:25:05,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565443735] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:25:05,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:25:05,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 22:25:05,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377061103] [2023-08-31 22:25:05,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:25:05,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 22:25:05,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:25:05,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 22:25:05,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 22:25:05,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 237 [2023-08-31 22:25:05,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 66 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:05,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:25:05,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 237 [2023-08-31 22:25:05,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:25:06,023 INFO L130 PetriNetUnfolder]: 1854/2972 cut-off events. [2023-08-31 22:25:06,023 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 22:25:06,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5563 conditions, 2972 events. 1854/2972 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 16204 event pairs, 1049 based on Foata normal form. 0/1789 useless extension candidates. Maximal degree in co-relation 5560. Up to 2574 conditions per place. [2023-08-31 22:25:06,040 INFO L137 encePairwiseOnDemand]: 233/237 looper letters, 44 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-08-31 22:25:06,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 64 transitions, 224 flow [2023-08-31 22:25:06,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 22:25:06,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 22:25:06,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2023-08-31 22:25:06,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611814345991561 [2023-08-31 22:25:06,043 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2023-08-31 22:25:06,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2023-08-31 22:25:06,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:25:06,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2023-08-31 22:25:06,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:06,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:06,047 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:06,047 INFO L175 Difference]: Start difference. First operand has 58 places, 66 transitions, 136 flow. Second operand 3 states and 399 transitions. [2023-08-31 22:25:06,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 64 transitions, 224 flow [2023-08-31 22:25:06,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 224 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 22:25:06,049 INFO L231 Difference]: Finished difference. Result has 58 places, 64 transitions, 136 flow [2023-08-31 22:25:06,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=58, PETRI_TRANSITIONS=64} [2023-08-31 22:25:06,050 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -5 predicate places. [2023-08-31 22:25:06,051 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 64 transitions, 136 flow [2023-08-31 22:25:06,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:06,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:25:06,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-31 22:25:06,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 22:25:06,052 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:25:06,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:25:06,053 INFO L85 PathProgramCache]: Analyzing trace with hash 589713, now seen corresponding path program 1 times [2023-08-31 22:25:06,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:25:06,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10399826] [2023-08-31 22:25:06,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:25:06,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:25:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:25:06,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:25:06,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:25:06,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10399826] [2023-08-31 22:25:06,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10399826] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:25:06,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:25:06,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 22:25:06,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249141186] [2023-08-31 22:25:06,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:25:06,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 22:25:06,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:25:06,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 22:25:06,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 22:25:06,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 237 [2023-08-31 22:25:06,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 64 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:06,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:25:06,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 237 [2023-08-31 22:25:06,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:25:06,364 INFO L130 PetriNetUnfolder]: 1817/2903 cut-off events. [2023-08-31 22:25:06,365 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 22:25:06,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5435 conditions, 2903 events. 1817/2903 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 15760 event pairs, 1026 based on Foata normal form. 0/1758 useless extension candidates. Maximal degree in co-relation 5431. Up to 2512 conditions per place. [2023-08-31 22:25:06,379 INFO L137 encePairwiseOnDemand]: 233/237 looper letters, 42 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-08-31 22:25:06,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 62 transitions, 220 flow [2023-08-31 22:25:06,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 22:25:06,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 22:25:06,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2023-08-31 22:25:06,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5541490857946554 [2023-08-31 22:25:06,382 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 394 transitions. [2023-08-31 22:25:06,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 394 transitions. [2023-08-31 22:25:06,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:25:06,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 394 transitions. [2023-08-31 22:25:06,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 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) [2023-08-31 22:25:06,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:06,386 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:06,386 INFO L175 Difference]: Start difference. First operand has 58 places, 64 transitions, 136 flow. Second operand 3 states and 394 transitions. [2023-08-31 22:25:06,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 62 transitions, 220 flow [2023-08-31 22:25:06,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 62 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 22:25:06,388 INFO L231 Difference]: Finished difference. Result has 56 places, 62 transitions, 132 flow [2023-08-31 22:25:06,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=56, PETRI_TRANSITIONS=62} [2023-08-31 22:25:06,388 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -7 predicate places. [2023-08-31 22:25:06,389 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 62 transitions, 132 flow [2023-08-31 22:25:06,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:06,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:25:06,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-31 22:25:06,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 22:25:06,390 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:25:06,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:25:06,390 INFO L85 PathProgramCache]: Analyzing trace with hash 566728316, now seen corresponding path program 1 times [2023-08-31 22:25:06,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:25:06,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291522365] [2023-08-31 22:25:06,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:25:06,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:25:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:25:06,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:25:06,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:25:06,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291522365] [2023-08-31 22:25:06,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291522365] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:25:06,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:25:06,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 22:25:06,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99208474] [2023-08-31 22:25:06,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:25:06,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 22:25:06,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:25:06,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 22:25:06,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 22:25:06,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 237 [2023-08-31 22:25:06,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 113.25) internal successors, (453), 4 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:06,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:25:06,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 237 [2023-08-31 22:25:06,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:25:06,780 INFO L130 PetriNetUnfolder]: 1341/2173 cut-off events. [2023-08-31 22:25:06,781 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 22:25:06,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4068 conditions, 2173 events. 1341/2173 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11395 event pairs, 741 based on Foata normal form. 0/1388 useless extension candidates. Maximal degree in co-relation 4064. Up to 1875 conditions per place. [2023-08-31 22:25:06,792 INFO L137 encePairwiseOnDemand]: 234/237 looper letters, 41 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-08-31 22:25:06,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 61 transitions, 216 flow [2023-08-31 22:25:06,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 22:25:06,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 22:25:06,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 380 transitions. [2023-08-31 22:25:06,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5344585091420534 [2023-08-31 22:25:06,794 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 380 transitions. [2023-08-31 22:25:06,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 380 transitions. [2023-08-31 22:25:06,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:25:06,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 380 transitions. [2023-08-31 22:25:06,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:06,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:06,798 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:06,799 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 132 flow. Second operand 3 states and 380 transitions. [2023-08-31 22:25:06,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 61 transitions, 216 flow [2023-08-31 22:25:06,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 212 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 22:25:06,800 INFO L231 Difference]: Finished difference. Result has 55 places, 61 transitions, 130 flow [2023-08-31 22:25:06,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=55, PETRI_TRANSITIONS=61} [2023-08-31 22:25:06,801 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -8 predicate places. [2023-08-31 22:25:06,802 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 61 transitions, 130 flow [2023-08-31 22:25:06,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.25) internal successors, (453), 4 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:06,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:25:06,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-31 22:25:06,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 22:25:06,803 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:25:06,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:25:06,804 INFO L85 PathProgramCache]: Analyzing trace with hash 566728317, now seen corresponding path program 1 times [2023-08-31 22:25:06,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:25:06,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117349916] [2023-08-31 22:25:06,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:25:06,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:25:06,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:25:06,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:25:06,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:25:06,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117349916] [2023-08-31 22:25:06,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117349916] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:25:06,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:25:06,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 22:25:06,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166839188] [2023-08-31 22:25:06,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:25:06,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 22:25:06,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:25:06,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 22:25:06,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 22:25:06,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 237 [2023-08-31 22:25:06,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 61 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:06,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:25:06,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 237 [2023-08-31 22:25:06,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:25:06,992 INFO L130 PetriNetUnfolder]: 865/1443 cut-off events. [2023-08-31 22:25:06,992 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 22:25:06,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2701 conditions, 1443 events. 865/1443 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7140 event pairs, 456 based on Foata normal form. 0/1018 useless extension candidates. Maximal degree in co-relation 2697. Up to 1238 conditions per place. [2023-08-31 22:25:06,999 INFO L137 encePairwiseOnDemand]: 234/237 looper letters, 40 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-08-31 22:25:07,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 60 transitions, 212 flow [2023-08-31 22:25:07,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 22:25:07,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 22:25:07,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2023-08-31 22:25:07,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5541490857946554 [2023-08-31 22:25:07,006 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 394 transitions. [2023-08-31 22:25:07,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 394 transitions. [2023-08-31 22:25:07,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:25:07,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 394 transitions. [2023-08-31 22:25:07,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 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) [2023-08-31 22:25:07,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:07,011 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:07,011 INFO L175 Difference]: Start difference. First operand has 55 places, 61 transitions, 130 flow. Second operand 3 states and 394 transitions. [2023-08-31 22:25:07,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 60 transitions, 212 flow [2023-08-31 22:25:07,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 22:25:07,015 INFO L231 Difference]: Finished difference. Result has 54 places, 60 transitions, 128 flow [2023-08-31 22:25:07,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=54, PETRI_TRANSITIONS=60} [2023-08-31 22:25:07,017 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -9 predicate places. [2023-08-31 22:25:07,017 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 60 transitions, 128 flow [2023-08-31 22:25:07,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:07,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:25:07,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:25:07,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 22:25:07,018 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:25:07,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:25:07,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1499444968, now seen corresponding path program 1 times [2023-08-31 22:25:07,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:25:07,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647047449] [2023-08-31 22:25:07,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:25:07,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:25:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:25:07,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:25:07,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:25:07,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647047449] [2023-08-31 22:25:07,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647047449] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:25:07,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:25:07,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 22:25:07,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398369742] [2023-08-31 22:25:07,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:25:07,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 22:25:07,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:25:07,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 22:25:07,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 22:25:07,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 237 [2023-08-31 22:25:07,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 60 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:07,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:25:07,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 237 [2023-08-31 22:25:07,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:25:07,201 INFO L130 PetriNetUnfolder]: 909/1559 cut-off events. [2023-08-31 22:25:07,202 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-31 22:25:07,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2907 conditions, 1559 events. 909/1559 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7988 event pairs, 336 based on Foata normal form. 0/1144 useless extension candidates. Maximal degree in co-relation 2903. Up to 969 conditions per place. [2023-08-31 22:25:07,210 INFO L137 encePairwiseOnDemand]: 230/237 looper letters, 61 selfloop transitions, 5 changer transitions 0/83 dead transitions. [2023-08-31 22:25:07,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 83 transitions, 310 flow [2023-08-31 22:25:07,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 22:25:07,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 22:25:07,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2023-08-31 22:25:07,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6019690576652602 [2023-08-31 22:25:07,213 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2023-08-31 22:25:07,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2023-08-31 22:25:07,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:25:07,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2023-08-31 22:25:07,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:07,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:07,217 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:07,217 INFO L175 Difference]: Start difference. First operand has 54 places, 60 transitions, 128 flow. Second operand 3 states and 428 transitions. [2023-08-31 22:25:07,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 83 transitions, 310 flow [2023-08-31 22:25:07,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 83 transitions, 304 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 22:25:07,219 INFO L231 Difference]: Finished difference. Result has 56 places, 62 transitions, 156 flow [2023-08-31 22:25:07,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=56, PETRI_TRANSITIONS=62} [2023-08-31 22:25:07,243 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -7 predicate places. [2023-08-31 22:25:07,244 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 62 transitions, 156 flow [2023-08-31 22:25:07,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:07,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:25:07,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:25:07,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 22:25:07,245 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr2Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:25:07,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:25:07,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1548292065, now seen corresponding path program 1 times [2023-08-31 22:25:07,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:25:07,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719253368] [2023-08-31 22:25:07,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:25:07,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:25:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:25:07,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:25:07,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:25:07,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719253368] [2023-08-31 22:25:07,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719253368] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:25:07,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:25:07,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 22:25:07,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305345187] [2023-08-31 22:25:07,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:25:07,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 22:25:07,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:25:07,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 22:25:07,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 22:25:07,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 237 [2023-08-31 22:25:07,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:07,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:25:07,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 237 [2023-08-31 22:25:07,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:25:07,440 INFO L130 PetriNetUnfolder]: 805/1403 cut-off events. [2023-08-31 22:25:07,441 INFO L131 PetriNetUnfolder]: For 191/191 co-relation queries the response was YES. [2023-08-31 22:25:07,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2797 conditions, 1403 events. 805/1403 cut-off events. For 191/191 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7045 event pairs, 345 based on Foata normal form. 34/1132 useless extension candidates. Maximal degree in co-relation 2792. Up to 983 conditions per place. [2023-08-31 22:25:07,451 INFO L137 encePairwiseOnDemand]: 230/237 looper letters, 59 selfloop transitions, 4 changer transitions 1/81 dead transitions. [2023-08-31 22:25:07,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 81 transitions, 324 flow [2023-08-31 22:25:07,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 22:25:07,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 22:25:07,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 427 transitions. [2023-08-31 22:25:07,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.60056258790436 [2023-08-31 22:25:07,453 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 427 transitions. [2023-08-31 22:25:07,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 427 transitions. [2023-08-31 22:25:07,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:25:07,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 427 transitions. [2023-08-31 22:25:07,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:07,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:07,457 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:07,457 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 156 flow. Second operand 3 states and 427 transitions. [2023-08-31 22:25:07,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 81 transitions, 324 flow [2023-08-31 22:25:07,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 81 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 22:25:07,465 INFO L231 Difference]: Finished difference. Result has 57 places, 61 transitions, 160 flow [2023-08-31 22:25:07,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=57, PETRI_TRANSITIONS=61} [2023-08-31 22:25:07,465 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -6 predicate places. [2023-08-31 22:25:07,466 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 61 transitions, 160 flow [2023-08-31 22:25:07,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:07,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:25:07,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:25:07,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 22:25:07,467 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:25:07,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:25:07,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1944565218, now seen corresponding path program 1 times [2023-08-31 22:25:07,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:25:07,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906968652] [2023-08-31 22:25:07,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:25:07,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:25:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:25:07,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:25:07,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:25:07,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906968652] [2023-08-31 22:25:07,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906968652] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:25:07,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:25:07,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 22:25:07,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52531357] [2023-08-31 22:25:07,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:25:07,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 22:25:07,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:25:07,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 22:25:07,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 22:25:07,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 237 [2023-08-31 22:25:07,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 61 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:07,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:25:07,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 237 [2023-08-31 22:25:07,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:25:07,757 INFO L130 PetriNetUnfolder]: 1602/2711 cut-off events. [2023-08-31 22:25:07,757 INFO L131 PetriNetUnfolder]: For 635/635 co-relation queries the response was YES. [2023-08-31 22:25:07,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5532 conditions, 2711 events. 1602/2711 cut-off events. For 635/635 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 14819 event pairs, 419 based on Foata normal form. 0/2212 useless extension candidates. Maximal degree in co-relation 5526. Up to 1377 conditions per place. [2023-08-31 22:25:07,770 INFO L137 encePairwiseOnDemand]: 232/237 looper letters, 81 selfloop transitions, 4 changer transitions 0/99 dead transitions. [2023-08-31 22:25:07,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 99 transitions, 437 flow [2023-08-31 22:25:07,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 22:25:07,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 22:25:07,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2023-08-31 22:25:07,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216596343178622 [2023-08-31 22:25:07,772 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2023-08-31 22:25:07,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2023-08-31 22:25:07,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:25:07,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2023-08-31 22:25:07,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:07,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:07,775 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:07,775 INFO L175 Difference]: Start difference. First operand has 57 places, 61 transitions, 160 flow. Second operand 3 states and 442 transitions. [2023-08-31 22:25:07,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 99 transitions, 437 flow [2023-08-31 22:25:07,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 99 transitions, 429 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 22:25:07,780 INFO L231 Difference]: Finished difference. Result has 59 places, 65 transitions, 190 flow [2023-08-31 22:25:07,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=59, PETRI_TRANSITIONS=65} [2023-08-31 22:25:07,781 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -4 predicate places. [2023-08-31 22:25:07,781 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 65 transitions, 190 flow [2023-08-31 22:25:07,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:07,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:25:07,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:25:07,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 22:25:07,782 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:25:07,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:25:07,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1661685334, now seen corresponding path program 2 times [2023-08-31 22:25:07,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:25:07,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588397338] [2023-08-31 22:25:07,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:25:07,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:25:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:25:07,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:25:07,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:25:07,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588397338] [2023-08-31 22:25:07,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588397338] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:25:07,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:25:07,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 22:25:07,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685257140] [2023-08-31 22:25:07,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:25:07,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 22:25:07,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:25:07,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 22:25:07,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 22:25:07,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 237 [2023-08-31 22:25:07,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 65 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:07,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:25:07,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 237 [2023-08-31 22:25:07,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:25:08,197 INFO L130 PetriNetUnfolder]: 2112/3546 cut-off events. [2023-08-31 22:25:08,198 INFO L131 PetriNetUnfolder]: For 982/982 co-relation queries the response was YES. [2023-08-31 22:25:08,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7619 conditions, 3546 events. 2112/3546 cut-off events. For 982/982 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 20175 event pairs, 580 based on Foata normal form. 90/3130 useless extension candidates. Maximal degree in co-relation 7612. Up to 1880 conditions per place. [2023-08-31 22:25:08,213 INFO L137 encePairwiseOnDemand]: 223/237 looper letters, 95 selfloop transitions, 16 changer transitions 7/130 dead transitions. [2023-08-31 22:25:08,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 130 transitions, 601 flow [2023-08-31 22:25:08,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 22:25:08,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 22:25:08,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 670 transitions. [2023-08-31 22:25:08,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5654008438818565 [2023-08-31 22:25:08,216 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 670 transitions. [2023-08-31 22:25:08,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 670 transitions. [2023-08-31 22:25:08,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:25:08,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 670 transitions. [2023-08-31 22:25:08,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 134.0) internal successors, (670), 5 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:08,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 237.0) internal successors, (1422), 6 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:08,220 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 237.0) internal successors, (1422), 6 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:08,220 INFO L175 Difference]: Start difference. First operand has 59 places, 65 transitions, 190 flow. Second operand 5 states and 670 transitions. [2023-08-31 22:25:08,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 130 transitions, 601 flow [2023-08-31 22:25:08,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 130 transitions, 591 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 22:25:08,225 INFO L231 Difference]: Finished difference. Result has 64 places, 79 transitions, 321 flow [2023-08-31 22:25:08,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=321, PETRI_PLACES=64, PETRI_TRANSITIONS=79} [2023-08-31 22:25:08,226 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 1 predicate places. [2023-08-31 22:25:08,226 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 79 transitions, 321 flow [2023-08-31 22:25:08,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:08,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:25:08,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:25:08,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 22:25:08,227 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:25:08,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:25:08,227 INFO L85 PathProgramCache]: Analyzing trace with hash -585149906, now seen corresponding path program 3 times [2023-08-31 22:25:08,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:25:08,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840488874] [2023-08-31 22:25:08,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:25:08,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:25:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:25:08,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:25:08,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:25:08,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840488874] [2023-08-31 22:25:08,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840488874] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:25:08,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:25:08,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 22:25:08,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606039109] [2023-08-31 22:25:08,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:25:08,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 22:25:08,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:25:08,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 22:25:08,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 22:25:08,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 237 [2023-08-31 22:25:08,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 79 transitions, 321 flow. Second operand has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:08,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:25:08,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 237 [2023-08-31 22:25:08,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:25:08,836 INFO L130 PetriNetUnfolder]: 4256/7269 cut-off events. [2023-08-31 22:25:08,837 INFO L131 PetriNetUnfolder]: For 4117/4469 co-relation queries the response was YES. [2023-08-31 22:25:08,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17935 conditions, 7269 events. 4256/7269 cut-off events. For 4117/4469 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 47278 event pairs, 1032 based on Foata normal form. 266/6731 useless extension candidates. Maximal degree in co-relation 17925. Up to 2770 conditions per place. [2023-08-31 22:25:08,871 INFO L137 encePairwiseOnDemand]: 231/237 looper letters, 147 selfloop transitions, 8 changer transitions 5/183 dead transitions. [2023-08-31 22:25:08,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 183 transitions, 1044 flow [2023-08-31 22:25:08,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 22:25:08,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 22:25:08,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 733 transitions. [2023-08-31 22:25:08,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6185654008438819 [2023-08-31 22:25:08,874 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 733 transitions. [2023-08-31 22:25:08,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 733 transitions. [2023-08-31 22:25:08,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:25:08,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 733 transitions. [2023-08-31 22:25:08,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:08,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 237.0) internal successors, (1422), 6 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:08,878 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 237.0) internal successors, (1422), 6 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:08,879 INFO L175 Difference]: Start difference. First operand has 64 places, 79 transitions, 321 flow. Second operand 5 states and 733 transitions. [2023-08-31 22:25:08,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 183 transitions, 1044 flow [2023-08-31 22:25:08,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 183 transitions, 1038 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-31 22:25:08,889 INFO L231 Difference]: Finished difference. Result has 72 places, 87 transitions, 385 flow [2023-08-31 22:25:08,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=385, PETRI_PLACES=72, PETRI_TRANSITIONS=87} [2023-08-31 22:25:08,890 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 9 predicate places. [2023-08-31 22:25:08,890 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 87 transitions, 385 flow [2023-08-31 22:25:08,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:08,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:25:08,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:25:08,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 22:25:08,891 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:25:08,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:25:08,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1141797074, now seen corresponding path program 4 times [2023-08-31 22:25:08,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:25:08,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019921390] [2023-08-31 22:25:08,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:25:08,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:25:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:25:08,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:25:08,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:25:08,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019921390] [2023-08-31 22:25:08,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019921390] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:25:08,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:25:08,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 22:25:08,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816791815] [2023-08-31 22:25:08,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:25:08,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 22:25:08,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:25:08,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 22:25:08,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 22:25:08,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 237 [2023-08-31 22:25:08,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 87 transitions, 385 flow. Second operand has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:08,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:25:08,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 237 [2023-08-31 22:25:08,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:25:09,593 INFO L130 PetriNetUnfolder]: 3733/6920 cut-off events. [2023-08-31 22:25:09,593 INFO L131 PetriNetUnfolder]: For 5207/5659 co-relation queries the response was YES. [2023-08-31 22:25:09,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17887 conditions, 6920 events. 3733/6920 cut-off events. For 5207/5659 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 47747 event pairs, 750 based on Foata normal form. 432/6826 useless extension candidates. Maximal degree in co-relation 17873. Up to 1889 conditions per place. [2023-08-31 22:25:09,635 INFO L137 encePairwiseOnDemand]: 231/237 looper letters, 140 selfloop transitions, 12 changer transitions 3/180 dead transitions. [2023-08-31 22:25:09,635 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 180 transitions, 1082 flow [2023-08-31 22:25:09,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 22:25:09,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 22:25:09,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 727 transitions. [2023-08-31 22:25:09,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6135021097046414 [2023-08-31 22:25:09,638 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 727 transitions. [2023-08-31 22:25:09,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 727 transitions. [2023-08-31 22:25:09,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:25:09,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 727 transitions. [2023-08-31 22:25:09,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.4) internal successors, (727), 5 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:09,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 237.0) internal successors, (1422), 6 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:09,642 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 237.0) internal successors, (1422), 6 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:09,642 INFO L175 Difference]: Start difference. First operand has 72 places, 87 transitions, 385 flow. Second operand 5 states and 727 transitions. [2023-08-31 22:25:09,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 180 transitions, 1082 flow [2023-08-31 22:25:09,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 180 transitions, 1082 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 22:25:09,654 INFO L231 Difference]: Finished difference. Result has 79 places, 95 transitions, 482 flow [2023-08-31 22:25:09,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=482, PETRI_PLACES=79, PETRI_TRANSITIONS=95} [2023-08-31 22:25:09,655 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 16 predicate places. [2023-08-31 22:25:09,655 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 95 transitions, 482 flow [2023-08-31 22:25:09,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:09,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:25:09,656 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, 1, 1] [2023-08-31 22:25:09,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 22:25:09,656 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:25:09,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:25:09,657 INFO L85 PathProgramCache]: Analyzing trace with hash 419746605, now seen corresponding path program 1 times [2023-08-31 22:25:09,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:25:09,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641458323] [2023-08-31 22:25:09,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:25:09,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:25:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:25:09,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:25:09,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:25:09,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641458323] [2023-08-31 22:25:09,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641458323] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:25:09,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:25:09,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 22:25:09,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714638685] [2023-08-31 22:25:09,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:25:09,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 22:25:09,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:25:09,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 22:25:09,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 22:25:09,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 237 [2023-08-31 22:25:09,713 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 95 transitions, 482 flow. Second operand has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:09,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:25:09,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 237 [2023-08-31 22:25:09,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:25:10,274 INFO L130 PetriNetUnfolder]: 2804/5172 cut-off events. [2023-08-31 22:25:10,274 INFO L131 PetriNetUnfolder]: For 4646/5003 co-relation queries the response was YES. [2023-08-31 22:25:10,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13523 conditions, 5172 events. 2804/5172 cut-off events. For 4646/5003 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 33131 event pairs, 969 based on Foata normal form. 238/4960 useless extension candidates. Maximal degree in co-relation 13506. Up to 2563 conditions per place. [2023-08-31 22:25:10,306 INFO L137 encePairwiseOnDemand]: 230/237 looper letters, 81 selfloop transitions, 10 changer transitions 2/130 dead transitions. [2023-08-31 22:25:10,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 130 transitions, 807 flow [2023-08-31 22:25:10,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 22:25:10,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 22:25:10,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 664 transitions. [2023-08-31 22:25:10,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.560337552742616 [2023-08-31 22:25:10,308 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 664 transitions. [2023-08-31 22:25:10,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 664 transitions. [2023-08-31 22:25:10,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:25:10,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 664 transitions. [2023-08-31 22:25:10,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.8) internal successors, (664), 5 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:10,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 237.0) internal successors, (1422), 6 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:10,312 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 237.0) internal successors, (1422), 6 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:10,312 INFO L175 Difference]: Start difference. First operand has 79 places, 95 transitions, 482 flow. Second operand 5 states and 664 transitions. [2023-08-31 22:25:10,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 130 transitions, 807 flow [2023-08-31 22:25:10,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 130 transitions, 785 flow, removed 11 selfloop flow, removed 0 redundant places. [2023-08-31 22:25:10,322 INFO L231 Difference]: Finished difference. Result has 86 places, 97 transitions, 503 flow [2023-08-31 22:25:10,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=503, PETRI_PLACES=86, PETRI_TRANSITIONS=97} [2023-08-31 22:25:10,323 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 23 predicate places. [2023-08-31 22:25:10,323 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 97 transitions, 503 flow [2023-08-31 22:25:10,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:10,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:25:10,324 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, 1, 1] [2023-08-31 22:25:10,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 22:25:10,324 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:25:10,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:25:10,325 INFO L85 PathProgramCache]: Analyzing trace with hash 543404360, now seen corresponding path program 1 times [2023-08-31 22:25:10,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:25:10,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176599011] [2023-08-31 22:25:10,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:25:10,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:25:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:25:10,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:25:10,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:25:10,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176599011] [2023-08-31 22:25:10,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176599011] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:25:10,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:25:10,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 22:25:10,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968415353] [2023-08-31 22:25:10,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:25:10,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 22:25:10,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:25:10,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 22:25:10,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 22:25:10,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 237 [2023-08-31 22:25:10,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 97 transitions, 503 flow. Second operand has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:10,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:25:10,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 237 [2023-08-31 22:25:10,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:25:10,704 INFO L130 PetriNetUnfolder]: 1663/3282 cut-off events. [2023-08-31 22:25:10,705 INFO L131 PetriNetUnfolder]: For 3650/3900 co-relation queries the response was YES. [2023-08-31 22:25:10,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9132 conditions, 3282 events. 1663/3282 cut-off events. For 3650/3900 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 21253 event pairs, 582 based on Foata normal form. 148/3171 useless extension candidates. Maximal degree in co-relation 9111. Up to 1666 conditions per place. [2023-08-31 22:25:10,759 INFO L137 encePairwiseOnDemand]: 230/237 looper letters, 79 selfloop transitions, 9 changer transitions 0/126 dead transitions. [2023-08-31 22:25:10,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 126 transitions, 764 flow [2023-08-31 22:25:10,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 22:25:10,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 22:25:10,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 662 transitions. [2023-08-31 22:25:10,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5586497890295359 [2023-08-31 22:25:10,762 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 662 transitions. [2023-08-31 22:25:10,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 662 transitions. [2023-08-31 22:25:10,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:25:10,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 662 transitions. [2023-08-31 22:25:10,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.4) internal successors, (662), 5 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:10,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 237.0) internal successors, (1422), 6 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:10,766 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 237.0) internal successors, (1422), 6 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:10,766 INFO L175 Difference]: Start difference. First operand has 86 places, 97 transitions, 503 flow. Second operand 5 states and 662 transitions. [2023-08-31 22:25:10,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 126 transitions, 764 flow [2023-08-31 22:25:10,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 126 transitions, 748 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-08-31 22:25:10,778 INFO L231 Difference]: Finished difference. Result has 91 places, 98 transitions, 512 flow [2023-08-31 22:25:10,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=512, PETRI_PLACES=91, PETRI_TRANSITIONS=98} [2023-08-31 22:25:10,780 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 28 predicate places. [2023-08-31 22:25:10,780 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 98 transitions, 512 flow [2023-08-31 22:25:10,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:10,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:25:10,780 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:25:10,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 22:25:10,781 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:25:10,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:25:10,781 INFO L85 PathProgramCache]: Analyzing trace with hash -157352223, now seen corresponding path program 1 times [2023-08-31 22:25:10,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:25:10,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364636464] [2023-08-31 22:25:10,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:25:10,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:25:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:25:11,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:25:11,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:25:11,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364636464] [2023-08-31 22:25:11,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364636464] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:25:11,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:25:11,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 22:25:11,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289848983] [2023-08-31 22:25:11,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:25:11,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 22:25:11,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:25:11,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 22:25:11,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 22:25:11,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 237 [2023-08-31 22:25:11,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 98 transitions, 512 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:11,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:25:11,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 237 [2023-08-31 22:25:11,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:25:11,365 INFO L130 PetriNetUnfolder]: 1575/3163 cut-off events. [2023-08-31 22:25:11,366 INFO L131 PetriNetUnfolder]: For 3966/4195 co-relation queries the response was YES. [2023-08-31 22:25:11,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9309 conditions, 3163 events. 1575/3163 cut-off events. For 3966/4195 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 20684 event pairs, 883 based on Foata normal form. 134/3003 useless extension candidates. Maximal degree in co-relation 9284. Up to 2366 conditions per place. [2023-08-31 22:25:11,382 INFO L137 encePairwiseOnDemand]: 235/237 looper letters, 0 selfloop transitions, 0 changer transitions 97/97 dead transitions. [2023-08-31 22:25:11,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 97 transitions, 622 flow [2023-08-31 22:25:11,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 22:25:11,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 22:25:11,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 397 transitions. [2023-08-31 22:25:11,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5583684950773559 [2023-08-31 22:25:11,384 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 397 transitions. [2023-08-31 22:25:11,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 397 transitions. [2023-08-31 22:25:11,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:25:11,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 397 transitions. [2023-08-31 22:25:11,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:11,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:11,387 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:11,387 INFO L175 Difference]: Start difference. First operand has 91 places, 98 transitions, 512 flow. Second operand 3 states and 397 transitions. [2023-08-31 22:25:11,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 97 transitions, 622 flow [2023-08-31 22:25:11,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 97 transitions, 611 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 22:25:11,402 INFO L231 Difference]: Finished difference. Result has 90 places, 0 transitions, 0 flow [2023-08-31 22:25:11,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=90, PETRI_TRANSITIONS=0} [2023-08-31 22:25:11,402 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 27 predicate places. [2023-08-31 22:25:11,403 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 0 transitions, 0 flow [2023-08-31 22:25:11,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:11,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONMEMORY_LEAK (14 of 15 remaining) [2023-08-31 22:25:11,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (13 of 15 remaining) [2023-08-31 22:25:11,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2023-08-31 22:25:11,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2023-08-31 22:25:11,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2023-08-31 22:25:11,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2023-08-31 22:25:11,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2023-08-31 22:25:11,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2023-08-31 22:25:11,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2023-08-31 22:25:11,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2023-08-31 22:25:11,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (4 of 15 remaining) [2023-08-31 22:25:11,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 15 remaining) [2023-08-31 22:25:11,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 15 remaining) [2023-08-31 22:25:11,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 15 remaining) [2023-08-31 22:25:11,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 15 remaining) [2023-08-31 22:25:11,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-31 22:25:11,408 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:25:11,413 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 22:25:11,413 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 22:25:11,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 10:25:11 BasicIcfg [2023-08-31 22:25:11,416 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 22:25:11,416 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 22:25:11,416 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 22:25:11,417 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 22:25:11,418 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 10:25:02" (3/4) ... [2023-08-31 22:25:11,420 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 22:25:11,424 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2023-08-31 22:25:11,425 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2023-08-31 22:25:11,429 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-08-31 22:25:11,429 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-31 22:25:11,429 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-31 22:25:11,429 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 22:25:11,457 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 22:25:11,461 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 22:25:11,462 INFO L158 Benchmark]: Toolchain (without parser) took 10444.02ms. Allocated memory was 71.3MB in the beginning and 499.1MB in the end (delta: 427.8MB). Free memory was 47.9MB in the beginning and 177.5MB in the end (delta: -129.6MB). Peak memory consumption was 299.1MB. Max. memory is 16.1GB. [2023-08-31 22:25:11,462 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 56.6MB. Free memory was 34.2MB in the beginning and 34.2MB in the end (delta: 33.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 22:25:11,463 INFO L158 Benchmark]: CACSL2BoogieTranslator took 488.15ms. Allocated memory is still 71.3MB. Free memory was 47.8MB in the beginning and 43.9MB in the end (delta: 3.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-08-31 22:25:11,463 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.41ms. Allocated memory is still 71.3MB. Free memory was 43.9MB in the beginning and 41.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 22:25:11,463 INFO L158 Benchmark]: Boogie Preprocessor took 53.75ms. Allocated memory is still 71.3MB. Free memory was 41.9MB in the beginning and 40.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 22:25:11,464 INFO L158 Benchmark]: RCFGBuilder took 524.50ms. Allocated memory is still 71.3MB. Free memory was 40.2MB in the beginning and 44.3MB in the end (delta: -4.0MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. [2023-08-31 22:25:11,464 INFO L158 Benchmark]: TraceAbstraction took 9292.94ms. Allocated memory was 71.3MB in the beginning and 499.1MB in the end (delta: 427.8MB). Free memory was 43.5MB in the beginning and 180.7MB in the end (delta: -137.2MB). Peak memory consumption was 289.9MB. Max. memory is 16.1GB. [2023-08-31 22:25:11,464 INFO L158 Benchmark]: Witness Printer took 45.06ms. Allocated memory is still 499.1MB. Free memory was 180.7MB in the beginning and 177.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 22:25:11,467 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 56.6MB. Free memory was 34.2MB in the beginning and 34.2MB in the end (delta: 33.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 488.15ms. Allocated memory is still 71.3MB. Free memory was 47.8MB in the beginning and 43.9MB in the end (delta: 3.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.41ms. Allocated memory is still 71.3MB. Free memory was 43.9MB in the beginning and 41.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.75ms. Allocated memory is still 71.3MB. Free memory was 41.9MB in the beginning and 40.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 524.50ms. Allocated memory is still 71.3MB. Free memory was 40.2MB in the beginning and 44.3MB in the end (delta: -4.0MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. * TraceAbstraction took 9292.94ms. Allocated memory was 71.3MB in the beginning and 499.1MB in the end (delta: 427.8MB). Free memory was 43.5MB in the beginning and 180.7MB in the end (delta: -137.2MB). Peak memory consumption was 289.9MB. Max. memory is 16.1GB. * Witness Printer took 45.06ms. Allocated memory is still 499.1MB. Free memory was 180.7MB in the beginning and 177.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 118 PlacesBefore, 63 PlacesAfterwards, 135 TransitionsBefore, 73 TransitionsAfterwards, 5676 CoEnabledTransitionPairs, 5 FixpointIterations, 35 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 7 ChoiceCompositions, 96 TotalNumberOfCompositions, 16119 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6851, independent: 6516, independent conditional: 0, independent unconditional: 6516, dependent: 335, dependent conditional: 0, dependent unconditional: 335, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2612, independent: 2567, independent conditional: 0, independent unconditional: 2567, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6851, independent: 3949, independent conditional: 0, independent unconditional: 3949, dependent: 290, dependent conditional: 0, dependent unconditional: 290, unknown: 2612, unknown conditional: 0, unknown unconditional: 2612] , Statistics on independence cache: Total cache size (in pairs): 491, Positive cache size: 456, Positive conditional cache size: 0, Positive unconditional cache size: 456, Negative cache size: 35, Negative conditional cache size: 0, Negative unconditional cache size: 35, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 834]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 764]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -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: 843]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 184 locations, 15 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: 9.2s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1022 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 741 mSDsluCounter, 104 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 36 mSDsCounter, 79 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1879 IncrementalHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 79 mSolverCounterUnsat, 68 mSDtfsCounter, 1879 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=512occurred in iteration=13, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 189 NumberOfCodeBlocks, 189 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 175 ConstructedInterpolants, 0 QuantifiedInterpolants, 744 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 11 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-31 22:25:11,494 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