./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-atomic/szymanski.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-atomic/szymanski.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 bc84ca2197caec735a8480f9d61b820c686ed9ae52711f2c7500999694c2ad40 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 19:48:01,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 19:48:01,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 19:48:01,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 19:48:01,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 19:48:01,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 19:48:01,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 19:48:01,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 19:48:01,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 19:48:01,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 19:48:01,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 19:48:01,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 19:48:01,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 19:48:01,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 19:48:01,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 19:48:01,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 19:48:01,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 19:48:01,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 19:48:01,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 19:48:01,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 19:48:01,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 19:48:01,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 19:48:01,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 19:48:01,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 19:48:01,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 19:48:01,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 19:48:01,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 19:48:01,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 19:48:01,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 19:48:01,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 19:48:01,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 19:48:01,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 19:48:01,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 19:48:01,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 19:48:01,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 19:48:01,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 19:48:01,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 19:48:01,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 19:48:01,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 19:48:01,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 19:48:01,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 19:48:01,453 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 19:48:01,484 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 19:48:01,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 19:48:01,485 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 19:48:01,485 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 19:48:01,486 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 19:48:01,486 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 19:48:01,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 19:48:01,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 19:48:01,487 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 19:48:01,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 19:48:01,487 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 19:48:01,487 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 19:48:01,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 19:48:01,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 19:48:01,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 19:48:01,488 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 19:48:01,488 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 19:48:01,488 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 19:48:01,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 19:48:01,488 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 19:48:01,489 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 19:48:01,489 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 19:48:01,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 19:48:01,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 19:48:01,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 19:48:01,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 19:48:01,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 19:48:01,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 19:48:01,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 19:48:01,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 19:48:01,490 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 19:48:01,490 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 19:48:01,490 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 19:48:01,491 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 19:48:01,491 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc84ca2197caec735a8480f9d61b820c686ed9ae52711f2c7500999694c2ad40 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 19:48:01,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 19:48:01,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 19:48:01,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 19:48:01,741 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 19:48:01,742 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 19:48:01,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/szymanski.i [2023-08-29 19:48:02,640 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 19:48:02,839 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 19:48:02,839 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i [2023-08-29 19:48:02,852 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa9d9c38a/c9dc9684fc2b450d9aae2d50b1995c25/FLAG79f36424c [2023-08-29 19:48:02,862 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa9d9c38a/c9dc9684fc2b450d9aae2d50b1995c25 [2023-08-29 19:48:02,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 19:48:02,864 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 19:48:02,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 19:48:02,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 19:48:02,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 19:48:02,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 07:48:02" (1/1) ... [2023-08-29 19:48:02,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28024f04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:48:02, skipping insertion in model container [2023-08-29 19:48:02,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 07:48:02" (1/1) ... [2023-08-29 19:48:02,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 19:48:02,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 19:48:03,033 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-29 19:48:03,140 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/szymanski.i[31505,31518] [2023-08-29 19:48:03,146 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/szymanski.i[32915,32928] [2023-08-29 19:48:03,151 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 19:48:03,160 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 19:48:03,176 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-29 19:48:03,191 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/szymanski.i[31505,31518] [2023-08-29 19:48:03,198 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[32915,32928] [2023-08-29 19:48:03,204 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 19:48:03,241 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 19:48:03,243 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 19:48:03,243 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 19:48:03,247 INFO L208 MainTranslator]: Completed translation [2023-08-29 19:48:03,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:48:03 WrapperNode [2023-08-29 19:48:03,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 19:48:03,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 19:48:03,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 19:48:03,251 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 19:48:03,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:48:03" (1/1) ... [2023-08-29 19:48:03,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:48:03" (1/1) ... [2023-08-29 19:48:03,310 INFO L138 Inliner]: procedures = 171, calls = 75, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2023-08-29 19:48:03,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 19:48:03,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 19:48:03,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 19:48:03,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 19:48:03,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:48:03" (1/1) ... [2023-08-29 19:48:03,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:48:03" (1/1) ... [2023-08-29 19:48:03,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:48:03" (1/1) ... [2023-08-29 19:48:03,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:48:03" (1/1) ... [2023-08-29 19:48:03,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:48:03" (1/1) ... [2023-08-29 19:48:03,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:48:03" (1/1) ... [2023-08-29 19:48:03,351 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:48:03" (1/1) ... [2023-08-29 19:48:03,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:48:03" (1/1) ... [2023-08-29 19:48:03,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 19:48:03,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 19:48:03,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 19:48:03,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 19:48:03,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:48:03" (1/1) ... [2023-08-29 19:48:03,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 19:48:03,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:48:03,385 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 19:48:03,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 19:48:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 19:48:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-08-29 19:48:03,413 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-08-29 19:48:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-29 19:48:03,414 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-29 19:48:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 19:48:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 19:48:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 19:48:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 19:48:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 19:48:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 19:48:03,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 19:48:03,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 19:48:03,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 19:48:03,416 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 19:48:03,503 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 19:48:03,504 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 19:48:03,686 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 19:48:03,691 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 19:48:03,691 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-08-29 19:48:03,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:48:03 BoogieIcfgContainer [2023-08-29 19:48:03,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 19:48:03,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 19:48:03,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 19:48:03,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 19:48:03,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 07:48:02" (1/3) ... [2023-08-29 19:48:03,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bbb6629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 07:48:03, skipping insertion in model container [2023-08-29 19:48:03,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:48:03" (2/3) ... [2023-08-29 19:48:03,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bbb6629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 07:48:03, skipping insertion in model container [2023-08-29 19:48:03,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:48:03" (3/3) ... [2023-08-29 19:48:03,698 INFO L112 eAbstractionObserver]: Analyzing ICFG szymanski.i [2023-08-29 19:48:03,708 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 19:48:03,716 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-29 19:48:03,716 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 19:48:03,780 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 19:48:03,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 125 transitions, 266 flow [2023-08-29 19:48:03,868 INFO L130 PetriNetUnfolder]: 20/123 cut-off events. [2023-08-29 19:48:03,868 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 19:48:03,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 123 events. 20/123 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 178 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 87. Up to 3 conditions per place. [2023-08-29 19:48:03,873 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 125 transitions, 266 flow [2023-08-29 19:48:03,876 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 119 transitions, 250 flow [2023-08-29 19:48:03,879 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 19:48:03,887 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 119 transitions, 250 flow [2023-08-29 19:48:03,889 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 119 transitions, 250 flow [2023-08-29 19:48:03,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 119 transitions, 250 flow [2023-08-29 19:48:03,915 INFO L130 PetriNetUnfolder]: 20/119 cut-off events. [2023-08-29 19:48:03,916 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 19:48:03,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 119 events. 20/119 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 180 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 87. Up to 3 conditions per place. [2023-08-29 19:48:03,919 INFO L119 LiptonReduction]: Number of co-enabled transitions 4248 [2023-08-29 19:48:05,648 INFO L134 LiptonReduction]: Checked pairs total: 8716 [2023-08-29 19:48:05,648 INFO L136 LiptonReduction]: Total number of compositions: 92 [2023-08-29 19:48:05,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 19:48:05,660 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;@4a4ab5f5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 19:48:05,660 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-08-29 19:48:05,661 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 19:48:05,661 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:48:05,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:48:05,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 19:48:05,662 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 19:48:05,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:48:05,665 INFO L85 PathProgramCache]: Analyzing trace with hash 537, now seen corresponding path program 1 times [2023-08-29 19:48:05,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:48:05,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923000358] [2023-08-29 19:48:05,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:48:05,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:48:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:48:05,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:48:05,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:48:05,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923000358] [2023-08-29 19:48:05,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923000358] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:48:05,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:48:05,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 19:48:05,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085190328] [2023-08-29 19:48:05,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:48:05,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 19:48:05,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:48:05,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 19:48:05,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 19:48:05,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 217 [2023-08-29 19:48:05,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 53 transitions, 118 flow. Second operand has 2 states, 2 states have (on average 111.5) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:05,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:48:05,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 217 [2023-08-29 19:48:05,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:48:05,934 INFO L130 PetriNetUnfolder]: 1614/2426 cut-off events. [2023-08-29 19:48:05,934 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2023-08-29 19:48:05,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4703 conditions, 2426 events. 1614/2426 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11487 event pairs, 837 based on Foata normal form. 0/1265 useless extension candidates. Maximal degree in co-relation 4406. Up to 2235 conditions per place. [2023-08-29 19:48:05,945 INFO L137 encePairwiseOnDemand]: 215/217 looper letters, 41 selfloop transitions, 0 changer transitions 0/51 dead transitions. [2023-08-29 19:48:05,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 51 transitions, 196 flow [2023-08-29 19:48:05,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 19:48:05,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 19:48:05,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 265 transitions. [2023-08-29 19:48:05,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6105990783410138 [2023-08-29 19:48:05,954 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 265 transitions. [2023-08-29 19:48:05,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 265 transitions. [2023-08-29 19:48:05,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:48:05,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 265 transitions. [2023-08-29 19:48:05,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 132.5) internal successors, (265), 2 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:05,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:05,961 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:05,962 INFO L175 Difference]: Start difference. First operand has 50 places, 53 transitions, 118 flow. Second operand 2 states and 265 transitions. [2023-08-29 19:48:05,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 51 transitions, 196 flow [2023-08-29 19:48:05,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 51 transitions, 188 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 19:48:05,965 INFO L231 Difference]: Finished difference. Result has 45 places, 51 transitions, 106 flow [2023-08-29 19:48:05,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=51} [2023-08-29 19:48:05,969 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2023-08-29 19:48:05,969 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 51 transitions, 106 flow [2023-08-29 19:48:05,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 111.5) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:05,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:48:05,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 19:48:05,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 19:48:05,970 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 19:48:05,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:48:05,970 INFO L85 PathProgramCache]: Analyzing trace with hash 530257, now seen corresponding path program 1 times [2023-08-29 19:48:05,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:48:05,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551228170] [2023-08-29 19:48:05,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:48:05,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:48:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:48:06,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:48:06,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:48:06,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551228170] [2023-08-29 19:48:06,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551228170] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:48:06,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:48:06,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:48:06,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736620817] [2023-08-29 19:48:06,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:48:06,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:48:06,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:48:06,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:48:06,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:48:06,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 217 [2023-08-29 19:48:06,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 51 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:06,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:48:06,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 217 [2023-08-29 19:48:06,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:48:06,238 INFO L130 PetriNetUnfolder]: 1577/2363 cut-off events. [2023-08-29 19:48:06,238 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 19:48:06,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4551 conditions, 2363 events. 1577/2363 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 11069 event pairs, 817 based on Foata normal form. 0/1247 useless extension candidates. Maximal degree in co-relation 4548. Up to 2171 conditions per place. [2023-08-29 19:48:06,246 INFO L137 encePairwiseOnDemand]: 213/217 looper letters, 37 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-08-29 19:48:06,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 49 transitions, 180 flow [2023-08-29 19:48:06,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:48:06,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:48:06,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2023-08-29 19:48:06,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5514592933947773 [2023-08-29 19:48:06,248 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 359 transitions. [2023-08-29 19:48:06,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 359 transitions. [2023-08-29 19:48:06,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:48:06,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 359 transitions. [2023-08-29 19:48:06,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:06,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:06,251 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:06,251 INFO L175 Difference]: Start difference. First operand has 45 places, 51 transitions, 106 flow. Second operand 3 states and 359 transitions. [2023-08-29 19:48:06,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 49 transitions, 180 flow [2023-08-29 19:48:06,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 19:48:06,253 INFO L231 Difference]: Finished difference. Result has 45 places, 49 transitions, 106 flow [2023-08-29 19:48:06,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=49} [2023-08-29 19:48:06,253 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2023-08-29 19:48:06,254 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 49 transitions, 106 flow [2023-08-29 19:48:06,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:06,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:48:06,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 19:48:06,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 19:48:06,254 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 19:48:06,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:48:06,255 INFO L85 PathProgramCache]: Analyzing trace with hash 530256, now seen corresponding path program 1 times [2023-08-29 19:48:06,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:48:06,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992157606] [2023-08-29 19:48:06,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:48:06,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:48:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:48:06,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:48:06,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:48:06,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992157606] [2023-08-29 19:48:06,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992157606] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:48:06,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:48:06,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:48:06,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80570736] [2023-08-29 19:48:06,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:48:06,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:48:06,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:48:06,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:48:06,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:48:06,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 217 [2023-08-29 19:48:06,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 49 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:06,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:48:06,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 217 [2023-08-29 19:48:06,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:48:06,451 INFO L130 PetriNetUnfolder]: 1540/2300 cut-off events. [2023-08-29 19:48:06,451 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 19:48:06,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4429 conditions, 2300 events. 1540/2300 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 10703 event pairs, 797 based on Foata normal form. 0/1229 useless extension candidates. Maximal degree in co-relation 4425. Up to 2109 conditions per place. [2023-08-29 19:48:06,467 INFO L137 encePairwiseOnDemand]: 213/217 looper letters, 35 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-08-29 19:48:06,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 176 flow [2023-08-29 19:48:06,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:48:06,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:48:06,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2023-08-29 19:48:06,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5299539170506913 [2023-08-29 19:48:06,469 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 345 transitions. [2023-08-29 19:48:06,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 345 transitions. [2023-08-29 19:48:06,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:48:06,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 345 transitions. [2023-08-29 19:48:06,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:06,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:06,472 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:06,473 INFO L175 Difference]: Start difference. First operand has 45 places, 49 transitions, 106 flow. Second operand 3 states and 345 transitions. [2023-08-29 19:48:06,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 176 flow [2023-08-29 19:48:06,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:48:06,474 INFO L231 Difference]: Finished difference. Result has 43 places, 47 transitions, 102 flow [2023-08-29 19:48:06,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=47} [2023-08-29 19:48:06,475 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -7 predicate places. [2023-08-29 19:48:06,476 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 47 transitions, 102 flow [2023-08-29 19:48:06,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:06,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:48:06,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 19:48:06,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 19:48:06,476 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 19:48:06,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:48:06,477 INFO L85 PathProgramCache]: Analyzing trace with hash 509591228, now seen corresponding path program 1 times [2023-08-29 19:48:06,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:48:06,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617649932] [2023-08-29 19:48:06,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:48:06,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:48:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:48:06,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:48:06,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:48:06,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617649932] [2023-08-29 19:48:06,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617649932] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:48:06,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:48:06,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 19:48:06,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114744774] [2023-08-29 19:48:06,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:48:06,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 19:48:06,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:48:06,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 19:48:06,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 19:48:06,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 217 [2023-08-29 19:48:06,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 47 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 99.25) internal successors, (397), 4 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) [2023-08-29 19:48:06,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:48:06,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 217 [2023-08-29 19:48:06,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:48:06,671 INFO L130 PetriNetUnfolder]: 1141/1725 cut-off events. [2023-08-29 19:48:06,672 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 19:48:06,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3325 conditions, 1725 events. 1141/1725 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7688 event pairs, 576 based on Foata normal form. 0/977 useless extension candidates. Maximal degree in co-relation 3321. Up to 1580 conditions per place. [2023-08-29 19:48:06,678 INFO L137 encePairwiseOnDemand]: 214/217 looper letters, 34 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-08-29 19:48:06,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 172 flow [2023-08-29 19:48:06,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:48:06,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:48:06,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 331 transitions. [2023-08-29 19:48:06,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084485407066052 [2023-08-29 19:48:06,679 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 331 transitions. [2023-08-29 19:48:06,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 331 transitions. [2023-08-29 19:48:06,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:48:06,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 331 transitions. [2023-08-29 19:48:06,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:06,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:06,681 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:06,682 INFO L175 Difference]: Start difference. First operand has 43 places, 47 transitions, 102 flow. Second operand 3 states and 331 transitions. [2023-08-29 19:48:06,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 172 flow [2023-08-29 19:48:06,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:48:06,683 INFO L231 Difference]: Finished difference. Result has 42 places, 46 transitions, 100 flow [2023-08-29 19:48:06,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=46} [2023-08-29 19:48:06,683 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -8 predicate places. [2023-08-29 19:48:06,684 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 46 transitions, 100 flow [2023-08-29 19:48:06,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.25) internal successors, (397), 4 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) [2023-08-29 19:48:06,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:48:06,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 19:48:06,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 19:48:06,684 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 19:48:06,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:48:06,685 INFO L85 PathProgramCache]: Analyzing trace with hash 509591229, now seen corresponding path program 1 times [2023-08-29 19:48:06,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:48:06,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182492] [2023-08-29 19:48:06,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:48:06,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:48:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:48:06,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:48:06,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:48:06,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182492] [2023-08-29 19:48:06,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182492] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:48:06,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:48:06,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:48:06,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206130306] [2023-08-29 19:48:06,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:48:06,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:48:06,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:48:06,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:48:06,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:48:06,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 217 [2023-08-29 19:48:06,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 46 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:06,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:48:06,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 217 [2023-08-29 19:48:06,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:48:06,804 INFO L130 PetriNetUnfolder]: 742/1150 cut-off events. [2023-08-29 19:48:06,804 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 19:48:06,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2221 conditions, 1150 events. 742/1150 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4838 event pairs, 355 based on Foata normal form. 0/725 useless extension candidates. Maximal degree in co-relation 2217. Up to 1051 conditions per place. [2023-08-29 19:48:06,808 INFO L137 encePairwiseOnDemand]: 214/217 looper letters, 33 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-08-29 19:48:06,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 168 flow [2023-08-29 19:48:06,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:48:06,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:48:06,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2023-08-29 19:48:06,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5299539170506913 [2023-08-29 19:48:06,810 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 345 transitions. [2023-08-29 19:48:06,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 345 transitions. [2023-08-29 19:48:06,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:48:06,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 345 transitions. [2023-08-29 19:48:06,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:06,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:06,812 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:06,812 INFO L175 Difference]: Start difference. First operand has 42 places, 46 transitions, 100 flow. Second operand 3 states and 345 transitions. [2023-08-29 19:48:06,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 168 flow [2023-08-29 19:48:06,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:48:06,813 INFO L231 Difference]: Finished difference. Result has 41 places, 45 transitions, 98 flow [2023-08-29 19:48:06,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=45} [2023-08-29 19:48:06,814 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -9 predicate places. [2023-08-29 19:48:06,814 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 45 transitions, 98 flow [2023-08-29 19:48:06,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:06,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:48:06,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:48:06,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 19:48:06,815 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 19:48:06,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:48:06,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1654453946, now seen corresponding path program 1 times [2023-08-29 19:48:06,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:48:06,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528097345] [2023-08-29 19:48:06,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:48:06,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:48:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:48:06,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:48:06,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:48:06,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528097345] [2023-08-29 19:48:06,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528097345] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:48:06,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:48:06,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 19:48:06,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630939177] [2023-08-29 19:48:06,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:48:06,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:48:06,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:48:06,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:48:06,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:48:06,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 217 [2023-08-29 19:48:06,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 45 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:06,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:48:06,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 217 [2023-08-29 19:48:06,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:48:06,919 INFO L130 PetriNetUnfolder]: 777/1219 cut-off events. [2023-08-29 19:48:06,919 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 19:48:06,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2353 conditions, 1219 events. 777/1219 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5152 event pairs, 220 based on Foata normal form. 0/790 useless extension candidates. Maximal degree in co-relation 2349. Up to 739 conditions per place. [2023-08-29 19:48:06,923 INFO L137 encePairwiseOnDemand]: 212/217 looper letters, 52 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2023-08-29 19:48:06,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 65 transitions, 252 flow [2023-08-29 19:48:06,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:48:06,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:48:06,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 375 transitions. [2023-08-29 19:48:06,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.576036866359447 [2023-08-29 19:48:06,925 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 375 transitions. [2023-08-29 19:48:06,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 375 transitions. [2023-08-29 19:48:06,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:48:06,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 375 transitions. [2023-08-29 19:48:06,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:06,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:06,927 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:06,927 INFO L175 Difference]: Start difference. First operand has 41 places, 45 transitions, 98 flow. Second operand 3 states and 375 transitions. [2023-08-29 19:48:06,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 65 transitions, 252 flow [2023-08-29 19:48:06,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 65 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:48:06,929 INFO L231 Difference]: Finished difference. Result has 43 places, 46 transitions, 114 flow [2023-08-29 19:48:06,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=43, PETRI_TRANSITIONS=46} [2023-08-29 19:48:06,929 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -7 predicate places. [2023-08-29 19:48:06,929 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 46 transitions, 114 flow [2023-08-29 19:48:06,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:06,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:48:06,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:48:06,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 19:48:06,930 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr2Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 19:48:06,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:48:06,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1291695761, now seen corresponding path program 1 times [2023-08-29 19:48:06,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:48:06,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241293846] [2023-08-29 19:48:06,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:48:06,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:48:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:48:06,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:48:06,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:48:06,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241293846] [2023-08-29 19:48:06,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241293846] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:48:06,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:48:06,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 19:48:06,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576898990] [2023-08-29 19:48:06,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:48:06,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:48:06,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:48:06,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:48:06,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:48:06,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 217 [2023-08-29 19:48:06,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 46 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:06,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:48:06,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 217 [2023-08-29 19:48:06,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:48:07,041 INFO L130 PetriNetUnfolder]: 717/1131 cut-off events. [2023-08-29 19:48:07,041 INFO L131 PetriNetUnfolder]: For 138/138 co-relation queries the response was YES. [2023-08-29 19:48:07,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2338 conditions, 1131 events. 717/1131 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4704 event pairs, 223 based on Foata normal form. 34/862 useless extension candidates. Maximal degree in co-relation 2333. Up to 741 conditions per place. [2023-08-29 19:48:07,045 INFO L137 encePairwiseOnDemand]: 213/217 looper letters, 51 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-08-29 19:48:07,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 63 transitions, 256 flow [2023-08-29 19:48:07,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:48:07,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:48:07,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 373 transitions. [2023-08-29 19:48:07,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5729646697388633 [2023-08-29 19:48:07,047 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 373 transitions. [2023-08-29 19:48:07,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 373 transitions. [2023-08-29 19:48:07,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:48:07,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 373 transitions. [2023-08-29 19:48:07,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:07,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:07,049 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:07,049 INFO L175 Difference]: Start difference. First operand has 43 places, 46 transitions, 114 flow. Second operand 3 states and 373 transitions. [2023-08-29 19:48:07,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 63 transitions, 256 flow [2023-08-29 19:48:07,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 63 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:48:07,051 INFO L231 Difference]: Finished difference. Result has 44 places, 46 transitions, 118 flow [2023-08-29 19:48:07,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=44, PETRI_TRANSITIONS=46} [2023-08-29 19:48:07,052 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -6 predicate places. [2023-08-29 19:48:07,052 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 46 transitions, 118 flow [2023-08-29 19:48:07,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:07,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:48:07,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:48:07,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 19:48:07,052 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 19:48:07,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:48:07,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1141963242, now seen corresponding path program 1 times [2023-08-29 19:48:07,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:48:07,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515956256] [2023-08-29 19:48:07,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:48:07,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:48:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:48:07,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:48:07,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:48:07,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515956256] [2023-08-29 19:48:07,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515956256] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:48:07,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:48:07,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:48:07,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91819962] [2023-08-29 19:48:07,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:48:07,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 19:48:07,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:48:07,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 19:48:07,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 19:48:07,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 217 [2023-08-29 19:48:07,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 46 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 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) [2023-08-29 19:48:07,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:48:07,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 217 [2023-08-29 19:48:07,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:48:07,277 INFO L130 PetriNetUnfolder]: 967/1515 cut-off events. [2023-08-29 19:48:07,278 INFO L131 PetriNetUnfolder]: For 262/262 co-relation queries the response was YES. [2023-08-29 19:48:07,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3207 conditions, 1515 events. 967/1515 cut-off events. For 262/262 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 6513 event pairs, 287 based on Foata normal form. 14/1196 useless extension candidates. Maximal degree in co-relation 3201. Up to 712 conditions per place. [2023-08-29 19:48:07,284 INFO L137 encePairwiseOnDemand]: 201/217 looper letters, 75 selfloop transitions, 21 changer transitions 0/101 dead transitions. [2023-08-29 19:48:07,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 101 transitions, 443 flow [2023-08-29 19:48:07,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 19:48:07,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 19:48:07,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 557 transitions. [2023-08-29 19:48:07,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133640552995392 [2023-08-29 19:48:07,286 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 557 transitions. [2023-08-29 19:48:07,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 557 transitions. [2023-08-29 19:48:07,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:48:07,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 557 transitions. [2023-08-29 19:48:07,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:07,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:07,289 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:07,289 INFO L175 Difference]: Start difference. First operand has 44 places, 46 transitions, 118 flow. Second operand 5 states and 557 transitions. [2023-08-29 19:48:07,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 101 transitions, 443 flow [2023-08-29 19:48:07,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 101 transitions, 439 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 19:48:07,292 INFO L231 Difference]: Finished difference. Result has 51 places, 64 transitions, 282 flow [2023-08-29 19:48:07,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=51, PETRI_TRANSITIONS=64} [2023-08-29 19:48:07,292 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-08-29 19:48:07,292 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 64 transitions, 282 flow [2023-08-29 19:48:07,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 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) [2023-08-29 19:48:07,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:48:07,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:48:07,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 19:48:07,293 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 19:48:07,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:48:07,294 INFO L85 PathProgramCache]: Analyzing trace with hash 761142634, now seen corresponding path program 2 times [2023-08-29 19:48:07,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:48:07,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504679268] [2023-08-29 19:48:07,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:48:07,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:48:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:48:07,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:48:07,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:48:07,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504679268] [2023-08-29 19:48:07,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504679268] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:48:07,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:48:07,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:48:07,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011445731] [2023-08-29 19:48:07,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:48:07,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 19:48:07,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:48:07,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 19:48:07,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 19:48:07,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 217 [2023-08-29 19:48:07,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 64 transitions, 282 flow. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 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) [2023-08-29 19:48:07,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:48:07,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 217 [2023-08-29 19:48:07,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:48:07,518 INFO L130 PetriNetUnfolder]: 1174/1891 cut-off events. [2023-08-29 19:48:07,518 INFO L131 PetriNetUnfolder]: For 1613/1617 co-relation queries the response was YES. [2023-08-29 19:48:07,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5239 conditions, 1891 events. 1174/1891 cut-off events. For 1613/1617 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 8714 event pairs, 260 based on Foata normal form. 46/1863 useless extension candidates. Maximal degree in co-relation 5230. Up to 638 conditions per place. [2023-08-29 19:48:07,526 INFO L137 encePairwiseOnDemand]: 200/217 looper letters, 84 selfloop transitions, 40 changer transitions 0/129 dead transitions. [2023-08-29 19:48:07,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 129 transitions, 823 flow [2023-08-29 19:48:07,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 19:48:07,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 19:48:07,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 557 transitions. [2023-08-29 19:48:07,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133640552995392 [2023-08-29 19:48:07,527 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 557 transitions. [2023-08-29 19:48:07,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 557 transitions. [2023-08-29 19:48:07,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:48:07,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 557 transitions. [2023-08-29 19:48:07,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:07,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:07,530 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:07,530 INFO L175 Difference]: Start difference. First operand has 51 places, 64 transitions, 282 flow. Second operand 5 states and 557 transitions. [2023-08-29 19:48:07,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 129 transitions, 823 flow [2023-08-29 19:48:07,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 129 transitions, 823 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 19:48:07,534 INFO L231 Difference]: Finished difference. Result has 59 places, 91 transitions, 650 flow [2023-08-29 19:48:07,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=650, PETRI_PLACES=59, PETRI_TRANSITIONS=91} [2023-08-29 19:48:07,535 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 9 predicate places. [2023-08-29 19:48:07,535 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 91 transitions, 650 flow [2023-08-29 19:48:07,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 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) [2023-08-29 19:48:07,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:48:07,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:48:07,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 19:48:07,536 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 19:48:07,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:48:07,536 INFO L85 PathProgramCache]: Analyzing trace with hash 712559146, now seen corresponding path program 3 times [2023-08-29 19:48:07,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:48:07,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927697789] [2023-08-29 19:48:07,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:48:07,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:48:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:48:07,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:48:07,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:48:07,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927697789] [2023-08-29 19:48:07,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927697789] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:48:07,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:48:07,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:48:07,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254344816] [2023-08-29 19:48:07,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:48:07,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 19:48:07,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:48:07,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 19:48:07,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 19:48:07,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 217 [2023-08-29 19:48:07,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 91 transitions, 650 flow. Second operand has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:07,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:48:07,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 217 [2023-08-29 19:48:07,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:48:07,786 INFO L130 PetriNetUnfolder]: 1489/2459 cut-off events. [2023-08-29 19:48:07,787 INFO L131 PetriNetUnfolder]: For 6573/6581 co-relation queries the response was YES. [2023-08-29 19:48:07,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8469 conditions, 2459 events. 1489/2459 cut-off events. For 6573/6581 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 12744 event pairs, 498 based on Foata normal form. 86/2521 useless extension candidates. Maximal degree in co-relation 8456. Up to 1606 conditions per place. [2023-08-29 19:48:07,801 INFO L137 encePairwiseOnDemand]: 203/217 looper letters, 122 selfloop transitions, 28 changer transitions 0/155 dead transitions. [2023-08-29 19:48:07,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 155 transitions, 1361 flow [2023-08-29 19:48:07,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 19:48:07,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 19:48:07,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2023-08-29 19:48:07,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124423963133641 [2023-08-29 19:48:07,802 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2023-08-29 19:48:07,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2023-08-29 19:48:07,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:48:07,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2023-08-29 19:48:07,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:07,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:07,805 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:07,805 INFO L175 Difference]: Start difference. First operand has 59 places, 91 transitions, 650 flow. Second operand 5 states and 556 transitions. [2023-08-29 19:48:07,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 155 transitions, 1361 flow [2023-08-29 19:48:07,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 155 transitions, 1359 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-29 19:48:07,814 INFO L231 Difference]: Finished difference. Result has 67 places, 114 transitions, 1030 flow [2023-08-29 19:48:07,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1030, PETRI_PLACES=67, PETRI_TRANSITIONS=114} [2023-08-29 19:48:07,815 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 17 predicate places. [2023-08-29 19:48:07,816 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 114 transitions, 1030 flow [2023-08-29 19:48:07,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:07,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:48:07,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:48:07,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 19:48:07,816 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 19:48:07,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:48:07,816 INFO L85 PathProgramCache]: Analyzing trace with hash -277947136, now seen corresponding path program 4 times [2023-08-29 19:48:07,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:48:07,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386433008] [2023-08-29 19:48:07,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:48:07,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:48:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:48:07,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:48:07,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:48:07,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386433008] [2023-08-29 19:48:07,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386433008] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:48:07,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:48:07,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:48:07,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534343870] [2023-08-29 19:48:07,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:48:07,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 19:48:07,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:48:07,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 19:48:07,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 19:48:07,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 217 [2023-08-29 19:48:07,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 114 transitions, 1030 flow. Second operand has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:07,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:48:07,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 217 [2023-08-29 19:48:07,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:48:08,082 INFO L130 PetriNetUnfolder]: 1402/2323 cut-off events. [2023-08-29 19:48:08,083 INFO L131 PetriNetUnfolder]: For 9854/10080 co-relation queries the response was YES. [2023-08-29 19:48:08,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9525 conditions, 2323 events. 1402/2323 cut-off events. For 9854/10080 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11443 event pairs, 366 based on Foata normal form. 202/2475 useless extension candidates. Maximal degree in co-relation 9508. Up to 1216 conditions per place. [2023-08-29 19:48:08,093 INFO L137 encePairwiseOnDemand]: 201/217 looper letters, 114 selfloop transitions, 23 changer transitions 17/183 dead transitions. [2023-08-29 19:48:08,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 183 transitions, 1793 flow [2023-08-29 19:48:08,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 19:48:08,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 19:48:08,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 550 transitions. [2023-08-29 19:48:08,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069124423963134 [2023-08-29 19:48:08,095 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 550 transitions. [2023-08-29 19:48:08,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 550 transitions. [2023-08-29 19:48:08,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:48:08,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 550 transitions. [2023-08-29 19:48:08,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:08,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:08,109 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:08,109 INFO L175 Difference]: Start difference. First operand has 67 places, 114 transitions, 1030 flow. Second operand 5 states and 550 transitions. [2023-08-29 19:48:08,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 183 transitions, 1793 flow [2023-08-29 19:48:08,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 183 transitions, 1729 flow, removed 32 selfloop flow, removed 0 redundant places. [2023-08-29 19:48:08,121 INFO L231 Difference]: Finished difference. Result has 73 places, 116 transitions, 1068 flow [2023-08-29 19:48:08,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1068, PETRI_PLACES=73, PETRI_TRANSITIONS=116} [2023-08-29 19:48:08,122 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 23 predicate places. [2023-08-29 19:48:08,122 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 116 transitions, 1068 flow [2023-08-29 19:48:08,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:08,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:48:08,123 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] [2023-08-29 19:48:08,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 19:48:08,123 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 19:48:08,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:48:08,123 INFO L85 PathProgramCache]: Analyzing trace with hash -898992874, now seen corresponding path program 1 times [2023-08-29 19:48:08,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:48:08,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522059377] [2023-08-29 19:48:08,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:48:08,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:48:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:48:08,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:48:08,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:48:08,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522059377] [2023-08-29 19:48:08,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522059377] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:48:08,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:48:08,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:48:08,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826832329] [2023-08-29 19:48:08,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:48:08,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 19:48:08,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:48:08,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 19:48:08,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 19:48:08,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 217 [2023-08-29 19:48:08,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 116 transitions, 1068 flow. Second operand has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:08,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:48:08,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 217 [2023-08-29 19:48:08,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:48:08,462 INFO L130 PetriNetUnfolder]: 1477/2572 cut-off events. [2023-08-29 19:48:08,462 INFO L131 PetriNetUnfolder]: For 14702/14966 co-relation queries the response was YES. [2023-08-29 19:48:08,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12383 conditions, 2572 events. 1477/2572 cut-off events. For 14702/14966 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 13909 event pairs, 452 based on Foata normal form. 184/2732 useless extension candidates. Maximal degree in co-relation 12362. Up to 1681 conditions per place. [2023-08-29 19:48:08,475 INFO L137 encePairwiseOnDemand]: 203/217 looper letters, 145 selfloop transitions, 24 changer transitions 1/199 dead transitions. [2023-08-29 19:48:08,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 199 transitions, 2069 flow [2023-08-29 19:48:08,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 19:48:08,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 19:48:08,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2023-08-29 19:48:08,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124423963133641 [2023-08-29 19:48:08,477 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2023-08-29 19:48:08,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2023-08-29 19:48:08,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:48:08,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2023-08-29 19:48:08,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:08,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:08,481 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:08,481 INFO L175 Difference]: Start difference. First operand has 73 places, 116 transitions, 1068 flow. Second operand 5 states and 556 transitions. [2023-08-29 19:48:08,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 199 transitions, 2069 flow [2023-08-29 19:48:08,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 199 transitions, 2062 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:48:08,494 INFO L231 Difference]: Finished difference. Result has 79 places, 137 transitions, 1361 flow [2023-08-29 19:48:08,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=1063, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1361, PETRI_PLACES=79, PETRI_TRANSITIONS=137} [2023-08-29 19:48:08,496 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 29 predicate places. [2023-08-29 19:48:08,496 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 137 transitions, 1361 flow [2023-08-29 19:48:08,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:08,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:48:08,497 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] [2023-08-29 19:48:08,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 19:48:08,497 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 19:48:08,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:48:08,497 INFO L85 PathProgramCache]: Analyzing trace with hash 999585124, now seen corresponding path program 2 times [2023-08-29 19:48:08,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:48:08,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554607629] [2023-08-29 19:48:08,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:48:08,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:48:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:48:08,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:48:08,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:48:08,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554607629] [2023-08-29 19:48:08,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554607629] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:48:08,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:48:08,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 19:48:08,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624763866] [2023-08-29 19:48:08,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:48:08,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 19:48:08,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:48:08,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 19:48:08,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-29 19:48:08,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 217 [2023-08-29 19:48:08,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 137 transitions, 1361 flow. Second operand has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:08,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:48:08,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 217 [2023-08-29 19:48:08,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:48:09,024 INFO L130 PetriNetUnfolder]: 1500/2582 cut-off events. [2023-08-29 19:48:09,024 INFO L131 PetriNetUnfolder]: For 17468/17830 co-relation queries the response was YES. [2023-08-29 19:48:09,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13847 conditions, 2582 events. 1500/2582 cut-off events. For 17468/17830 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 13879 event pairs, 640 based on Foata normal form. 109/2657 useless extension candidates. Maximal degree in co-relation 13824. Up to 2354 conditions per place. [2023-08-29 19:48:09,033 INFO L137 encePairwiseOnDemand]: 215/217 looper letters, 0 selfloop transitions, 0 changer transitions 136/136 dead transitions. [2023-08-29 19:48:09,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 136 transitions, 1573 flow [2023-08-29 19:48:09,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:48:09,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:48:09,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2023-08-29 19:48:09,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445468509984639 [2023-08-29 19:48:09,035 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2023-08-29 19:48:09,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2023-08-29 19:48:09,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:48:09,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2023-08-29 19:48:09,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:09,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:09,038 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:09,038 INFO L175 Difference]: Start difference. First operand has 79 places, 137 transitions, 1361 flow. Second operand 3 states and 290 transitions. [2023-08-29 19:48:09,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 136 transitions, 1573 flow [2023-08-29 19:48:09,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 136 transitions, 1557 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-08-29 19:48:09,056 INFO L231 Difference]: Finished difference. Result has 80 places, 0 transitions, 0 flow [2023-08-29 19:48:09,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=1343, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=80, PETRI_TRANSITIONS=0} [2023-08-29 19:48:09,057 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 30 predicate places. [2023-08-29 19:48:09,057 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 0 transitions, 0 flow [2023-08-29 19:48:09,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:09,059 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONMEMORY_LEAK (14 of 15 remaining) [2023-08-29 19:48:09,059 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (13 of 15 remaining) [2023-08-29 19:48:09,059 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2023-08-29 19:48:09,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2023-08-29 19:48:09,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2023-08-29 19:48:09,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2023-08-29 19:48:09,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2023-08-29 19:48:09,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2023-08-29 19:48:09,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2023-08-29 19:48:09,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2023-08-29 19:48:09,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (4 of 15 remaining) [2023-08-29 19:48:09,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 15 remaining) [2023-08-29 19:48:09,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 15 remaining) [2023-08-29 19:48:09,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 15 remaining) [2023-08-29 19:48:09,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 15 remaining) [2023-08-29 19:48:09,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 19:48:09,061 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:48:09,065 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 19:48:09,065 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 19:48:09,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 07:48:09 BasicIcfg [2023-08-29 19:48:09,067 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 19:48:09,068 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 19:48:09,068 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 19:48:09,068 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 19:48:09,068 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:48:03" (3/4) ... [2023-08-29 19:48:09,070 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 19:48:09,073 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2023-08-29 19:48:09,074 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2023-08-29 19:48:09,077 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-08-29 19:48:09,077 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 19:48:09,077 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 19:48:09,077 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 19:48:09,095 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 19:48:09,095 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 19:48:09,095 INFO L158 Benchmark]: Toolchain (without parser) took 6231.02ms. Allocated memory was 77.6MB in the beginning and 260.0MB in the end (delta: 182.5MB). Free memory was 53.2MB in the beginning and 69.5MB in the end (delta: -16.4MB). Peak memory consumption was 169.1MB. Max. memory is 16.1GB. [2023-08-29 19:48:09,095 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory was 32.8MB in the beginning and 32.8MB in the end (delta: 36.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 19:48:09,096 INFO L158 Benchmark]: CACSL2BoogieTranslator took 384.98ms. Allocated memory is still 77.6MB. Free memory was 53.0MB in the beginning and 54.6MB in the end (delta: -1.6MB). Peak memory consumption was 26.2MB. Max. memory is 16.1GB. [2023-08-29 19:48:09,096 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.86ms. Allocated memory is still 77.6MB. Free memory was 54.6MB in the beginning and 52.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 19:48:09,096 INFO L158 Benchmark]: Boogie Preprocessor took 45.88ms. Allocated memory is still 77.6MB. Free memory was 52.5MB in the beginning and 50.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 19:48:09,096 INFO L158 Benchmark]: RCFGBuilder took 334.91ms. Allocated memory is still 77.6MB. Free memory was 50.9MB in the beginning and 35.5MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-29 19:48:09,097 INFO L158 Benchmark]: TraceAbstraction took 5373.26ms. Allocated memory was 77.6MB in the beginning and 260.0MB in the end (delta: 182.5MB). Free memory was 34.8MB in the beginning and 71.6MB in the end (delta: -36.8MB). Peak memory consumption was 159.6MB. Max. memory is 16.1GB. [2023-08-29 19:48:09,097 INFO L158 Benchmark]: Witness Printer took 27.20ms. Allocated memory is still 260.0MB. Free memory was 71.6MB in the beginning and 69.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 19:48:09,098 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory was 32.8MB in the beginning and 32.8MB in the end (delta: 36.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 384.98ms. Allocated memory is still 77.6MB. Free memory was 53.0MB in the beginning and 54.6MB in the end (delta: -1.6MB). Peak memory consumption was 26.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.86ms. Allocated memory is still 77.6MB. Free memory was 54.6MB in the beginning and 52.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.88ms. Allocated memory is still 77.6MB. Free memory was 52.5MB in the beginning and 50.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 334.91ms. Allocated memory is still 77.6MB. Free memory was 50.9MB in the beginning and 35.5MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5373.26ms. Allocated memory was 77.6MB in the beginning and 260.0MB in the end (delta: 182.5MB). Free memory was 34.8MB in the beginning and 71.6MB in the end (delta: -36.8MB). Peak memory consumption was 159.6MB. Max. memory is 16.1GB. * Witness Printer took 27.20ms. Allocated memory is still 260.0MB. Free memory was 71.6MB in the beginning and 69.5MB in the end (delta: 2.1MB). 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: 1.8s, 106 PlacesBefore, 50 PlacesAfterwards, 119 TransitionsBefore, 53 TransitionsAfterwards, 4248 CoEnabledTransitionPairs, 5 FixpointIterations, 29 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 10 ChoiceCompositions, 92 TotalNumberOfCompositions, 8716 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4187, independent: 3967, independent conditional: 0, independent unconditional: 3967, dependent: 220, dependent conditional: 0, dependent unconditional: 220, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1912, independent: 1877, independent conditional: 0, independent unconditional: 1877, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4187, independent: 2090, independent conditional: 0, independent unconditional: 2090, dependent: 185, dependent conditional: 0, dependent unconditional: 185, unknown: 1912, unknown conditional: 0, unknown unconditional: 1912] , Statistics on independence cache: Total cache size (in pairs): 221, Positive cache size: 196, Positive conditional cache size: 0, Positive unconditional cache size: 196, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 802]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 745]: 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: 816]: 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, 162 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: 5.3s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1055 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 753 mSDsluCounter, 121 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 50 mSDsCounter, 176 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1765 IncrementalHoareTripleChecker+Invalid, 1941 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 176 mSolverCounterUnsat, 71 mSDtfsCounter, 1765 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1361occurred in iteration=12, InterpolantAutomatonStates: 48, 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, 0.6s InterpolantComputationTime, 173 NumberOfCodeBlocks, 173 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 160 ConstructedInterpolants, 0 QuantifiedInterpolants, 748 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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! [2023-08-29 19:48:09,115 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