./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 BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-atomic/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 BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 22:26:41,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 22:26:41,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 22:26:41,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 22:26:41,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 22:26:41,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 22:26:41,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 22:26:41,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 22:26:41,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 22:26:41,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 22:26:41,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 22:26:41,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 22:26:41,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 22:26:41,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 22:26:41,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 22:26:41,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 22:26:41,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 22:26:41,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 22:26:41,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 22:26:41,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 22:26:41,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 22:26:41,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 22:26:41,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 22:26:41,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 22:26:41,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 22:26:41,327 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 22:26:41,327 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 22:26:41,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 22:26:41,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 22:26:41,330 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 22:26:41,331 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 22:26:41,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 22:26:41,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 22:26:41,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 22:26:41,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 22:26:41,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 22:26:41,336 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 22:26:41,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 22:26:41,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 22:26:41,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 22:26:41,338 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 22:26:41,339 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 22:26:41,373 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 22:26:41,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 22:26:41,375 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 22:26:41,375 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 22:26:41,376 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 22:26:41,376 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 22:26:41,377 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 22:26:41,377 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 22:26:41,377 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 22:26:41,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 22:26:41,378 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 22:26:41,378 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 22:26:41,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 22:26:41,379 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 22:26:41,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 22:26:41,379 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 22:26:41,379 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 22:26:41,379 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 22:26:41,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 22:26:41,380 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 22:26:41,380 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 22:26:41,380 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 22:26:41,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 22:26:41,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 22:26:41,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 22:26:41,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 22:26:41,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 22:26:41,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 22:26:41,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 22:26:41,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 22:26:41,382 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 22:26:41,382 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 22:26:41,383 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 22:26:41,383 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 22:26:41,383 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc84ca2197caec735a8480f9d61b820c686ed9ae52711f2c7500999694c2ad40 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 22:26:41,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 22:26:41,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 22:26:41,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 22:26:41,726 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 22:26:41,727 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 22:26:41,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/szymanski.i [2023-08-31 22:26:42,999 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 22:26:43,301 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 22:26:43,301 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i [2023-08-31 22:26:43,323 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56f6e11d2/c4832cd6737e4770be0526c7486b0983/FLAG014219064 [2023-08-31 22:26:43,344 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56f6e11d2/c4832cd6737e4770be0526c7486b0983 [2023-08-31 22:26:43,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 22:26:43,347 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 22:26:43,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 22:26:43,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 22:26:43,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 22:26:43,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 10:26:43" (1/1) ... [2023-08-31 22:26:43,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48373b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:26:43, skipping insertion in model container [2023-08-31 22:26:43,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 10:26:43" (1/1) ... [2023-08-31 22:26:43,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 22:26:43,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 22:26:43,610 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-31 22:26:43,757 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] [2023-08-31 22:26:43,766 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] [2023-08-31 22:26:43,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 22:26:43,788 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 22:26:43,803 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-31 22:26:43,839 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] [2023-08-31 22:26:43,844 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] [2023-08-31 22:26:43,850 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 22:26:43,879 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 22:26:43,879 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 22:26:43,879 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 22:26:43,885 INFO L208 MainTranslator]: Completed translation [2023-08-31 22:26:43,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:26:43 WrapperNode [2023-08-31 22:26:43,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 22:26:43,887 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 22:26:43,888 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 22:26:43,888 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 22:26:43,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:26:43" (1/1) ... [2023-08-31 22:26:43,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:26:43" (1/1) ... [2023-08-31 22:26:43,922 INFO L138 Inliner]: procedures = 171, calls = 75, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2023-08-31 22:26:43,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 22:26:43,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 22:26:43,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 22:26:43,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 22:26:43,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:26:43" (1/1) ... [2023-08-31 22:26:43,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:26:43" (1/1) ... [2023-08-31 22:26:43,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:26:43" (1/1) ... [2023-08-31 22:26:43,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:26:43" (1/1) ... [2023-08-31 22:26:43,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:26:43" (1/1) ... [2023-08-31 22:26:43,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:26:43" (1/1) ... [2023-08-31 22:26:43,966 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:26:43" (1/1) ... [2023-08-31 22:26:43,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:26:43" (1/1) ... [2023-08-31 22:26:43,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 22:26:43,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 22:26:43,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 22:26:43,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 22:26:43,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:26:43" (1/1) ... [2023-08-31 22:26:43,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 22:26:43,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 22:26:43,998 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 22:26:44,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 22:26:44,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 22:26:44,025 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-08-31 22:26:44,025 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-08-31 22:26:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-31 22:26:44,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-31 22:26:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 22:26:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 22:26:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 22:26:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 22:26:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 22:26:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 22:26:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 22:26:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 22:26:44,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 22:26:44,028 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 22:26:44,202 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 22:26:44,204 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 22:26:44,393 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 22:26:44,399 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 22:26:44,399 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-08-31 22:26:44,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 10:26:44 BoogieIcfgContainer [2023-08-31 22:26:44,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 22:26:44,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 22:26:44,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 22:26:44,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 22:26:44,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 10:26:43" (1/3) ... [2023-08-31 22:26:44,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ddef46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 10:26:44, skipping insertion in model container [2023-08-31 22:26:44,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:26:43" (2/3) ... [2023-08-31 22:26:44,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ddef46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 10:26:44, skipping insertion in model container [2023-08-31 22:26:44,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 10:26:44" (3/3) ... [2023-08-31 22:26:44,409 INFO L112 eAbstractionObserver]: Analyzing ICFG szymanski.i [2023-08-31 22:26:44,424 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 22:26:44,425 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-31 22:26:44,425 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 22:26:44,520 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 22:26:44,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 125 transitions, 266 flow [2023-08-31 22:26:44,609 INFO L130 PetriNetUnfolder]: 20/123 cut-off events. [2023-08-31 22:26:44,610 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 22:26:44,615 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. [2023-08-31 22:26:44,616 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 125 transitions, 266 flow [2023-08-31 22:26:44,621 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 119 transitions, 250 flow [2023-08-31 22:26:44,624 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:26:44,632 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 119 transitions, 250 flow [2023-08-31 22:26:44,634 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 119 transitions, 250 flow [2023-08-31 22:26:44,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 119 transitions, 250 flow [2023-08-31 22:26:44,657 INFO L130 PetriNetUnfolder]: 20/119 cut-off events. [2023-08-31 22:26:44,658 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 22:26:44,659 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. [2023-08-31 22:26:44,662 INFO L119 LiptonReduction]: Number of co-enabled transitions 4248 [2023-08-31 22:26:46,810 INFO L134 LiptonReduction]: Checked pairs total: 8716 [2023-08-31 22:26:46,811 INFO L136 LiptonReduction]: Total number of compositions: 92 [2023-08-31 22:26:46,823 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 22:26:46,829 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;@79572811, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:26:46,829 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-08-31 22:26:46,830 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-31 22:26:46,831 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 22:26:46,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:26:46,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 22:26:46,832 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:26:46,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:26:46,836 INFO L85 PathProgramCache]: Analyzing trace with hash 537, now seen corresponding path program 1 times [2023-08-31 22:26:46,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:26:46,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459254973] [2023-08-31 22:26:46,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:26:46,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:26:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:26:46,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:26:46,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:26:46,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459254973] [2023-08-31 22:26:46,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459254973] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:26:46,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:26:46,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 22:26:46,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499447572] [2023-08-31 22:26:46,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:26:46,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 22:26:47,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:26:47,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 22:26:47,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 22:26:47,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 217 [2023-08-31 22:26:47,022 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) [2023-08-31 22:26:47,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:26:47,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 217 [2023-08-31 22:26:47,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:26:47,300 INFO L130 PetriNetUnfolder]: 1614/2426 cut-off events. [2023-08-31 22:26:47,301 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2023-08-31 22:26:47,307 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. [2023-08-31 22:26:47,322 INFO L137 encePairwiseOnDemand]: 215/217 looper letters, 41 selfloop transitions, 0 changer transitions 0/51 dead transitions. [2023-08-31 22:26:47,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 51 transitions, 196 flow [2023-08-31 22:26:47,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 22:26:47,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 22:26:47,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 265 transitions. [2023-08-31 22:26:47,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6105990783410138 [2023-08-31 22:26:47,340 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 265 transitions. [2023-08-31 22:26:47,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 265 transitions. [2023-08-31 22:26:47,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:26:47,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 265 transitions. [2023-08-31 22:26:47,349 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) [2023-08-31 22:26:47,352 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) [2023-08-31 22:26:47,353 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) [2023-08-31 22:26:47,354 INFO L175 Difference]: Start difference. First operand has 50 places, 53 transitions, 118 flow. Second operand 2 states and 265 transitions. [2023-08-31 22:26:47,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 51 transitions, 196 flow [2023-08-31 22:26:47,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 51 transitions, 188 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 22:26:47,361 INFO L231 Difference]: Finished difference. Result has 45 places, 51 transitions, 106 flow [2023-08-31 22:26:47,363 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} [2023-08-31 22:26:47,366 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2023-08-31 22:26:47,367 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 51 transitions, 106 flow [2023-08-31 22:26:47,368 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) [2023-08-31 22:26:47,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:26:47,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-31 22:26:47,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 22:26:47,371 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:26:47,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:26:47,372 INFO L85 PathProgramCache]: Analyzing trace with hash 530257, now seen corresponding path program 1 times [2023-08-31 22:26:47,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:26:47,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142606289] [2023-08-31 22:26:47,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:26:47,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:26:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:26:47,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:26:47,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:26:47,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142606289] [2023-08-31 22:26:47,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142606289] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:26:47,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:26:47,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 22:26:47,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862792007] [2023-08-31 22:26:47,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:26:47,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 22:26:47,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:26:47,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 22:26:47,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 22:26:47,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 217 [2023-08-31 22:26:47,596 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) [2023-08-31 22:26:47,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:26:47,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 217 [2023-08-31 22:26:47,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:26:47,794 INFO L130 PetriNetUnfolder]: 1577/2363 cut-off events. [2023-08-31 22:26:47,794 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 22:26:47,797 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. [2023-08-31 22:26:47,808 INFO L137 encePairwiseOnDemand]: 213/217 looper letters, 37 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-08-31 22:26:47,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 49 transitions, 180 flow [2023-08-31 22:26:47,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 22:26:47,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 22:26:47,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2023-08-31 22:26:47,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5514592933947773 [2023-08-31 22:26:47,811 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 359 transitions. [2023-08-31 22:26:47,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 359 transitions. [2023-08-31 22:26:47,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:26:47,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 359 transitions. [2023-08-31 22:26:47,813 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) [2023-08-31 22:26:47,816 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) [2023-08-31 22:26:47,817 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) [2023-08-31 22:26:47,817 INFO L175 Difference]: Start difference. First operand has 45 places, 51 transitions, 106 flow. Second operand 3 states and 359 transitions. [2023-08-31 22:26:47,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 49 transitions, 180 flow [2023-08-31 22:26:47,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 22:26:47,820 INFO L231 Difference]: Finished difference. Result has 45 places, 49 transitions, 106 flow [2023-08-31 22:26:47,821 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} [2023-08-31 22:26:47,821 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2023-08-31 22:26:47,821 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 49 transitions, 106 flow [2023-08-31 22:26:47,822 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) [2023-08-31 22:26:47,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:26:47,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-31 22:26:47,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 22:26:47,823 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:26:47,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:26:47,826 INFO L85 PathProgramCache]: Analyzing trace with hash 530256, now seen corresponding path program 1 times [2023-08-31 22:26:47,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:26:47,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557857816] [2023-08-31 22:26:47,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:26:47,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:26:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:26:47,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:26:47,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:26:47,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557857816] [2023-08-31 22:26:47,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557857816] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:26:47,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:26:47,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 22:26:47,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989922766] [2023-08-31 22:26:47,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:26:47,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 22:26:47,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:26:47,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 22:26:47,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 22:26:47,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 217 [2023-08-31 22:26:47,917 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) [2023-08-31 22:26:47,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:26:47,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 217 [2023-08-31 22:26:47,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:26:48,098 INFO L130 PetriNetUnfolder]: 1540/2300 cut-off events. [2023-08-31 22:26:48,099 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 22:26:48,101 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. [2023-08-31 22:26:48,112 INFO L137 encePairwiseOnDemand]: 213/217 looper letters, 35 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-08-31 22:26:48,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 176 flow [2023-08-31 22:26:48,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 22:26:48,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 22:26:48,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2023-08-31 22:26:48,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5299539170506913 [2023-08-31 22:26:48,115 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 345 transitions. [2023-08-31 22:26:48,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 345 transitions. [2023-08-31 22:26:48,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:26:48,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 345 transitions. [2023-08-31 22:26:48,116 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) [2023-08-31 22:26:48,117 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) [2023-08-31 22:26:48,118 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) [2023-08-31 22:26:48,118 INFO L175 Difference]: Start difference. First operand has 45 places, 49 transitions, 106 flow. Second operand 3 states and 345 transitions. [2023-08-31 22:26:48,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 176 flow [2023-08-31 22:26:48,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 22:26:48,120 INFO L231 Difference]: Finished difference. Result has 43 places, 47 transitions, 102 flow [2023-08-31 22:26:48,120 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} [2023-08-31 22:26:48,121 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -7 predicate places. [2023-08-31 22:26:48,121 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 47 transitions, 102 flow [2023-08-31 22:26:48,121 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) [2023-08-31 22:26:48,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:26:48,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-31 22:26:48,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 22:26:48,122 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:26:48,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:26:48,123 INFO L85 PathProgramCache]: Analyzing trace with hash 509591228, now seen corresponding path program 1 times [2023-08-31 22:26:48,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:26:48,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592846272] [2023-08-31 22:26:48,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:26:48,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:26:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:26:48,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:26:48,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:26:48,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592846272] [2023-08-31 22:26:48,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592846272] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:26:48,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:26:48,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 22:26:48,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540574885] [2023-08-31 22:26:48,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:26:48,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 22:26:48,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:26:48,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 22:26:48,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 22:26:48,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 217 [2023-08-31 22:26:48,262 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) [2023-08-31 22:26:48,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:26:48,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 217 [2023-08-31 22:26:48,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:26:48,397 INFO L130 PetriNetUnfolder]: 1141/1725 cut-off events. [2023-08-31 22:26:48,397 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 22:26:48,399 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. [2023-08-31 22:26:48,407 INFO L137 encePairwiseOnDemand]: 214/217 looper letters, 34 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-08-31 22:26:48,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 172 flow [2023-08-31 22:26:48,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 22:26:48,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 22:26:48,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 331 transitions. [2023-08-31 22:26:48,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084485407066052 [2023-08-31 22:26:48,410 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 331 transitions. [2023-08-31 22:26:48,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 331 transitions. [2023-08-31 22:26:48,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:26:48,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 331 transitions. [2023-08-31 22:26:48,412 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) [2023-08-31 22:26:48,413 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) [2023-08-31 22:26:48,414 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) [2023-08-31 22:26:48,414 INFO L175 Difference]: Start difference. First operand has 43 places, 47 transitions, 102 flow. Second operand 3 states and 331 transitions. [2023-08-31 22:26:48,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 172 flow [2023-08-31 22:26:48,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 22:26:48,416 INFO L231 Difference]: Finished difference. Result has 42 places, 46 transitions, 100 flow [2023-08-31 22:26:48,416 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} [2023-08-31 22:26:48,417 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -8 predicate places. [2023-08-31 22:26:48,417 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 46 transitions, 100 flow [2023-08-31 22:26:48,418 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) [2023-08-31 22:26:48,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:26:48,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-31 22:26:48,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 22:26:48,419 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:26:48,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:26:48,419 INFO L85 PathProgramCache]: Analyzing trace with hash 509591229, now seen corresponding path program 1 times [2023-08-31 22:26:48,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:26:48,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94387227] [2023-08-31 22:26:48,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:26:48,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:26:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:26:48,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:26:48,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:26:48,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94387227] [2023-08-31 22:26:48,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94387227] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:26:48,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:26:48,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 22:26:48,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333201739] [2023-08-31 22:26:48,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:26:48,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 22:26:48,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:26:48,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 22:26:48,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 22:26:48,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 217 [2023-08-31 22:26:48,485 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) [2023-08-31 22:26:48,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:26:48,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 217 [2023-08-31 22:26:48,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:26:48,579 INFO L130 PetriNetUnfolder]: 742/1150 cut-off events. [2023-08-31 22:26:48,579 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 22:26:48,581 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. [2023-08-31 22:26:48,585 INFO L137 encePairwiseOnDemand]: 214/217 looper letters, 33 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-08-31 22:26:48,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 168 flow [2023-08-31 22:26:48,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 22:26:48,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 22:26:48,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2023-08-31 22:26:48,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5299539170506913 [2023-08-31 22:26:48,587 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 345 transitions. [2023-08-31 22:26:48,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 345 transitions. [2023-08-31 22:26:48,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:26:48,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 345 transitions. [2023-08-31 22:26:48,589 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) [2023-08-31 22:26:48,590 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) [2023-08-31 22:26:48,590 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) [2023-08-31 22:26:48,590 INFO L175 Difference]: Start difference. First operand has 42 places, 46 transitions, 100 flow. Second operand 3 states and 345 transitions. [2023-08-31 22:26:48,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 168 flow [2023-08-31 22:26:48,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 22:26:48,592 INFO L231 Difference]: Finished difference. Result has 41 places, 45 transitions, 98 flow [2023-08-31 22:26:48,592 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} [2023-08-31 22:26:48,593 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -9 predicate places. [2023-08-31 22:26:48,593 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 45 transitions, 98 flow [2023-08-31 22:26:48,593 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) [2023-08-31 22:26:48,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:26:48,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:26:48,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 22:26:48,594 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:26:48,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:26:48,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1654453946, now seen corresponding path program 1 times [2023-08-31 22:26:48,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:26:48,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818552432] [2023-08-31 22:26:48,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:26:48,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:26:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:26:48,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:26:48,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:26:48,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818552432] [2023-08-31 22:26:48,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818552432] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:26:48,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:26:48,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 22:26:48,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623997778] [2023-08-31 22:26:48,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:26:48,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 22:26:48,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:26:48,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 22:26:48,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 22:26:48,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 217 [2023-08-31 22:26:48,629 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) [2023-08-31 22:26:48,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:26:48,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 217 [2023-08-31 22:26:48,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:26:48,737 INFO L130 PetriNetUnfolder]: 777/1219 cut-off events. [2023-08-31 22:26:48,737 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-31 22:26:48,738 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. [2023-08-31 22:26:48,742 INFO L137 encePairwiseOnDemand]: 212/217 looper letters, 52 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2023-08-31 22:26:48,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 65 transitions, 252 flow [2023-08-31 22:26:48,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 22:26:48,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 22:26:48,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 375 transitions. [2023-08-31 22:26:48,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.576036866359447 [2023-08-31 22:26:48,745 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 375 transitions. [2023-08-31 22:26:48,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 375 transitions. [2023-08-31 22:26:48,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:26:48,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 375 transitions. [2023-08-31 22:26:48,746 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) [2023-08-31 22:26:48,747 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) [2023-08-31 22:26:48,748 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) [2023-08-31 22:26:48,748 INFO L175 Difference]: Start difference. First operand has 41 places, 45 transitions, 98 flow. Second operand 3 states and 375 transitions. [2023-08-31 22:26:48,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 65 transitions, 252 flow [2023-08-31 22:26:48,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 65 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 22:26:48,754 INFO L231 Difference]: Finished difference. Result has 43 places, 46 transitions, 114 flow [2023-08-31 22:26:48,754 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} [2023-08-31 22:26:48,754 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -7 predicate places. [2023-08-31 22:26:48,755 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 46 transitions, 114 flow [2023-08-31 22:26:48,755 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) [2023-08-31 22:26:48,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:26:48,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:26:48,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 22:26:48,756 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr2Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:26:48,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:26:48,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1291695761, now seen corresponding path program 1 times [2023-08-31 22:26:48,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:26:48,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722564451] [2023-08-31 22:26:48,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:26:48,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:26:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:26:48,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:26:48,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:26:48,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722564451] [2023-08-31 22:26:48,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722564451] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:26:48,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:26:48,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 22:26:48,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803885940] [2023-08-31 22:26:48,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:26:48,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 22:26:48,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:26:48,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 22:26:48,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 22:26:48,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 217 [2023-08-31 22:26:48,794 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) [2023-08-31 22:26:48,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:26:48,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 217 [2023-08-31 22:26:48,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:26:48,894 INFO L130 PetriNetUnfolder]: 717/1131 cut-off events. [2023-08-31 22:26:48,894 INFO L131 PetriNetUnfolder]: For 138/138 co-relation queries the response was YES. [2023-08-31 22:26:48,896 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. [2023-08-31 22:26:48,900 INFO L137 encePairwiseOnDemand]: 213/217 looper letters, 51 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-08-31 22:26:48,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 63 transitions, 256 flow [2023-08-31 22:26:48,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 22:26:48,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 22:26:48,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 373 transitions. [2023-08-31 22:26:48,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5729646697388633 [2023-08-31 22:26:48,902 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 373 transitions. [2023-08-31 22:26:48,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 373 transitions. [2023-08-31 22:26:48,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:26:48,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 373 transitions. [2023-08-31 22:26:48,904 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) [2023-08-31 22:26:48,905 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) [2023-08-31 22:26:48,905 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) [2023-08-31 22:26:48,905 INFO L175 Difference]: Start difference. First operand has 43 places, 46 transitions, 114 flow. Second operand 3 states and 373 transitions. [2023-08-31 22:26:48,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 63 transitions, 256 flow [2023-08-31 22:26:48,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 63 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 22:26:48,908 INFO L231 Difference]: Finished difference. Result has 44 places, 46 transitions, 118 flow [2023-08-31 22:26:48,909 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} [2023-08-31 22:26:48,909 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -6 predicate places. [2023-08-31 22:26:48,909 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 46 transitions, 118 flow [2023-08-31 22:26:48,910 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) [2023-08-31 22:26:48,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:26:48,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:26:48,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 22:26:48,910 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:26:48,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:26:48,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1141963242, now seen corresponding path program 1 times [2023-08-31 22:26:48,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:26:48,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062355925] [2023-08-31 22:26:48,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:26:48,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:26:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:26:48,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:26:48,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:26:48,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062355925] [2023-08-31 22:26:48,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062355925] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:26:48,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:26:48,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 22:26:48,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347494061] [2023-08-31 22:26:48,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:26:48,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 22:26:48,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:26:48,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 22:26:48,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 22:26:48,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 217 [2023-08-31 22:26:48,990 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) [2023-08-31 22:26:48,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:26:48,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 217 [2023-08-31 22:26:48,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:26:49,168 INFO L130 PetriNetUnfolder]: 967/1515 cut-off events. [2023-08-31 22:26:49,169 INFO L131 PetriNetUnfolder]: For 262/262 co-relation queries the response was YES. [2023-08-31 22:26:49,171 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. [2023-08-31 22:26:49,176 INFO L137 encePairwiseOnDemand]: 201/217 looper letters, 75 selfloop transitions, 21 changer transitions 0/101 dead transitions. [2023-08-31 22:26:49,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 101 transitions, 443 flow [2023-08-31 22:26:49,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 22:26:49,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 22:26:49,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 557 transitions. [2023-08-31 22:26:49,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133640552995392 [2023-08-31 22:26:49,179 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 557 transitions. [2023-08-31 22:26:49,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 557 transitions. [2023-08-31 22:26:49,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:26:49,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 557 transitions. [2023-08-31 22:26:49,181 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) [2023-08-31 22:26:49,182 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) [2023-08-31 22:26:49,183 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) [2023-08-31 22:26:49,183 INFO L175 Difference]: Start difference. First operand has 44 places, 46 transitions, 118 flow. Second operand 5 states and 557 transitions. [2023-08-31 22:26:49,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 101 transitions, 443 flow [2023-08-31 22:26:49,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 101 transitions, 439 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 22:26:49,186 INFO L231 Difference]: Finished difference. Result has 51 places, 64 transitions, 282 flow [2023-08-31 22:26:49,186 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} [2023-08-31 22:26:49,187 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-08-31 22:26:49,187 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 64 transitions, 282 flow [2023-08-31 22:26:49,188 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) [2023-08-31 22:26:49,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:26:49,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:26:49,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 22:26:49,188 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:26:49,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:26:49,189 INFO L85 PathProgramCache]: Analyzing trace with hash 761142634, now seen corresponding path program 2 times [2023-08-31 22:26:49,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:26:49,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968950752] [2023-08-31 22:26:49,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:26:49,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:26:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:26:49,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:26:49,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:26:49,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968950752] [2023-08-31 22:26:49,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968950752] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:26:49,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:26:49,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 22:26:49,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640902327] [2023-08-31 22:26:49,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:26:49,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 22:26:49,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:26:49,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 22:26:49,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 22:26:49,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 217 [2023-08-31 22:26:49,262 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) [2023-08-31 22:26:49,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:26:49,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 217 [2023-08-31 22:26:49,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:26:49,480 INFO L130 PetriNetUnfolder]: 1174/1891 cut-off events. [2023-08-31 22:26:49,480 INFO L131 PetriNetUnfolder]: For 1613/1617 co-relation queries the response was YES. [2023-08-31 22:26:49,483 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. [2023-08-31 22:26:49,492 INFO L137 encePairwiseOnDemand]: 200/217 looper letters, 84 selfloop transitions, 40 changer transitions 0/129 dead transitions. [2023-08-31 22:26:49,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 129 transitions, 823 flow [2023-08-31 22:26:49,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 22:26:49,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 22:26:49,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 557 transitions. [2023-08-31 22:26:49,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133640552995392 [2023-08-31 22:26:49,508 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 557 transitions. [2023-08-31 22:26:49,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 557 transitions. [2023-08-31 22:26:49,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:26:49,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 557 transitions. [2023-08-31 22:26:49,510 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) [2023-08-31 22:26:49,511 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) [2023-08-31 22:26:49,512 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) [2023-08-31 22:26:49,512 INFO L175 Difference]: Start difference. First operand has 51 places, 64 transitions, 282 flow. Second operand 5 states and 557 transitions. [2023-08-31 22:26:49,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 129 transitions, 823 flow [2023-08-31 22:26:49,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 129 transitions, 823 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 22:26:49,517 INFO L231 Difference]: Finished difference. Result has 59 places, 91 transitions, 650 flow [2023-08-31 22:26:49,518 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} [2023-08-31 22:26:49,518 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 9 predicate places. [2023-08-31 22:26:49,519 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 91 transitions, 650 flow [2023-08-31 22:26:49,519 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) [2023-08-31 22:26:49,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:26:49,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:26:49,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 22:26:49,520 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:26:49,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:26:49,520 INFO L85 PathProgramCache]: Analyzing trace with hash 712559146, now seen corresponding path program 3 times [2023-08-31 22:26:49,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:26:49,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183339799] [2023-08-31 22:26:49,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:26:49,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:26:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:26:49,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:26:49,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:26:49,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183339799] [2023-08-31 22:26:49,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183339799] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:26:49,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:26:49,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 22:26:49,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283761571] [2023-08-31 22:26:49,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:26:49,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 22:26:49,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:26:49,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 22:26:49,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 22:26:49,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 217 [2023-08-31 22:26:49,577 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) [2023-08-31 22:26:49,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:26:49,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 217 [2023-08-31 22:26:49,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:26:49,874 INFO L130 PetriNetUnfolder]: 1489/2459 cut-off events. [2023-08-31 22:26:49,874 INFO L131 PetriNetUnfolder]: For 6573/6581 co-relation queries the response was YES. [2023-08-31 22:26:49,878 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. [2023-08-31 22:26:49,889 INFO L137 encePairwiseOnDemand]: 203/217 looper letters, 122 selfloop transitions, 28 changer transitions 0/155 dead transitions. [2023-08-31 22:26:49,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 155 transitions, 1361 flow [2023-08-31 22:26:49,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 22:26:49,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 22:26:49,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2023-08-31 22:26:49,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124423963133641 [2023-08-31 22:26:49,892 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2023-08-31 22:26:49,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2023-08-31 22:26:49,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:26:49,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2023-08-31 22:26:49,894 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) [2023-08-31 22:26:49,895 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) [2023-08-31 22:26:49,896 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) [2023-08-31 22:26:49,896 INFO L175 Difference]: Start difference. First operand has 59 places, 91 transitions, 650 flow. Second operand 5 states and 556 transitions. [2023-08-31 22:26:49,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 155 transitions, 1361 flow [2023-08-31 22:26:49,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 155 transitions, 1359 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-31 22:26:49,907 INFO L231 Difference]: Finished difference. Result has 67 places, 114 transitions, 1030 flow [2023-08-31 22:26:49,908 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} [2023-08-31 22:26:49,908 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 17 predicate places. [2023-08-31 22:26:49,908 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 114 transitions, 1030 flow [2023-08-31 22:26:49,909 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) [2023-08-31 22:26:49,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:26:49,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:26:49,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 22:26:49,909 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:26:49,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:26:49,910 INFO L85 PathProgramCache]: Analyzing trace with hash -277947136, now seen corresponding path program 4 times [2023-08-31 22:26:49,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:26:49,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288996266] [2023-08-31 22:26:49,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:26:49,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:26:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:26:49,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:26:49,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:26:49,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288996266] [2023-08-31 22:26:49,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288996266] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:26:49,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:26:49,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 22:26:49,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634749308] [2023-08-31 22:26:49,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:26:49,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 22:26:49,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:26:49,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 22:26:49,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 22:26:49,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 217 [2023-08-31 22:26:49,978 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) [2023-08-31 22:26:49,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:26:49,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 217 [2023-08-31 22:26:49,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:26:50,302 INFO L130 PetriNetUnfolder]: 1402/2323 cut-off events. [2023-08-31 22:26:50,303 INFO L131 PetriNetUnfolder]: For 9854/10080 co-relation queries the response was YES. [2023-08-31 22:26:50,309 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. [2023-08-31 22:26:50,325 INFO L137 encePairwiseOnDemand]: 201/217 looper letters, 114 selfloop transitions, 23 changer transitions 17/183 dead transitions. [2023-08-31 22:26:50,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 183 transitions, 1793 flow [2023-08-31 22:26:50,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 22:26:50,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 22:26:50,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 550 transitions. [2023-08-31 22:26:50,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069124423963134 [2023-08-31 22:26:50,328 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 550 transitions. [2023-08-31 22:26:50,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 550 transitions. [2023-08-31 22:26:50,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:26:50,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 550 transitions. [2023-08-31 22:26:50,330 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) [2023-08-31 22:26:50,332 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) [2023-08-31 22:26:50,334 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) [2023-08-31 22:26:50,334 INFO L175 Difference]: Start difference. First operand has 67 places, 114 transitions, 1030 flow. Second operand 5 states and 550 transitions. [2023-08-31 22:26:50,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 183 transitions, 1793 flow [2023-08-31 22:26:50,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 183 transitions, 1729 flow, removed 32 selfloop flow, removed 0 redundant places. [2023-08-31 22:26:50,357 INFO L231 Difference]: Finished difference. Result has 73 places, 116 transitions, 1068 flow [2023-08-31 22:26:50,358 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} [2023-08-31 22:26:50,358 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 23 predicate places. [2023-08-31 22:26:50,359 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 116 transitions, 1068 flow [2023-08-31 22:26:50,359 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) [2023-08-31 22:26:50,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:26:50,359 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] [2023-08-31 22:26:50,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 22:26:50,360 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:26:50,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:26:50,360 INFO L85 PathProgramCache]: Analyzing trace with hash -898992874, now seen corresponding path program 1 times [2023-08-31 22:26:50,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:26:50,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257569893] [2023-08-31 22:26:50,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:26:50,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:26:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:26:50,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:26:50,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:26:50,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257569893] [2023-08-31 22:26:50,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257569893] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:26:50,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:26:50,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 22:26:50,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001540022] [2023-08-31 22:26:50,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:26:50,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 22:26:50,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:26:50,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 22:26:50,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 22:26:50,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 217 [2023-08-31 22:26:50,458 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) [2023-08-31 22:26:50,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:26:50,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 217 [2023-08-31 22:26:50,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:26:50,819 INFO L130 PetriNetUnfolder]: 1477/2572 cut-off events. [2023-08-31 22:26:50,819 INFO L131 PetriNetUnfolder]: For 14702/14966 co-relation queries the response was YES. [2023-08-31 22:26:50,826 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. [2023-08-31 22:26:50,837 INFO L137 encePairwiseOnDemand]: 203/217 looper letters, 145 selfloop transitions, 24 changer transitions 1/199 dead transitions. [2023-08-31 22:26:50,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 199 transitions, 2069 flow [2023-08-31 22:26:50,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 22:26:50,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 22:26:50,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2023-08-31 22:26:50,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124423963133641 [2023-08-31 22:26:50,840 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2023-08-31 22:26:50,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2023-08-31 22:26:50,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:26:50,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2023-08-31 22:26:50,841 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) [2023-08-31 22:26:50,843 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) [2023-08-31 22:26:50,843 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) [2023-08-31 22:26:50,844 INFO L175 Difference]: Start difference. First operand has 73 places, 116 transitions, 1068 flow. Second operand 5 states and 556 transitions. [2023-08-31 22:26:50,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 199 transitions, 2069 flow [2023-08-31 22:26:50,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 199 transitions, 2062 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 22:26:50,863 INFO L231 Difference]: Finished difference. Result has 79 places, 137 transitions, 1361 flow [2023-08-31 22:26:50,863 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} [2023-08-31 22:26:50,864 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 29 predicate places. [2023-08-31 22:26:50,864 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 137 transitions, 1361 flow [2023-08-31 22:26:50,864 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) [2023-08-31 22:26:50,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:26:50,864 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] [2023-08-31 22:26:50,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 22:26:50,865 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:26:50,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:26:50,865 INFO L85 PathProgramCache]: Analyzing trace with hash 999585124, now seen corresponding path program 2 times [2023-08-31 22:26:50,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:26:50,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479030275] [2023-08-31 22:26:50,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:26:50,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:26:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:26:51,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:26:51,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:26:51,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479030275] [2023-08-31 22:26:51,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479030275] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:26:51,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:26:51,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 22:26:51,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788602555] [2023-08-31 22:26:51,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:26:51,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 22:26:51,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:26:51,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 22:26:51,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-31 22:26:51,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 217 [2023-08-31 22:26:51,271 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) [2023-08-31 22:26:51,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:26:51,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 217 [2023-08-31 22:26:51,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:26:51,575 INFO L130 PetriNetUnfolder]: 1500/2582 cut-off events. [2023-08-31 22:26:51,575 INFO L131 PetriNetUnfolder]: For 17468/17830 co-relation queries the response was YES. [2023-08-31 22:26:51,583 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. [2023-08-31 22:26:51,586 INFO L137 encePairwiseOnDemand]: 215/217 looper letters, 0 selfloop transitions, 0 changer transitions 136/136 dead transitions. [2023-08-31 22:26:51,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 136 transitions, 1573 flow [2023-08-31 22:26:51,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 22:26:51,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 22:26:51,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2023-08-31 22:26:51,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445468509984639 [2023-08-31 22:26:51,588 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2023-08-31 22:26:51,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2023-08-31 22:26:51,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:26:51,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2023-08-31 22:26:51,589 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) [2023-08-31 22:26:51,590 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) [2023-08-31 22:26:51,591 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) [2023-08-31 22:26:51,591 INFO L175 Difference]: Start difference. First operand has 79 places, 137 transitions, 1361 flow. Second operand 3 states and 290 transitions. [2023-08-31 22:26:51,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 136 transitions, 1573 flow [2023-08-31 22:26:51,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 136 transitions, 1557 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-08-31 22:26:51,611 INFO L231 Difference]: Finished difference. Result has 80 places, 0 transitions, 0 flow [2023-08-31 22:26:51,611 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} [2023-08-31 22:26:51,612 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 30 predicate places. [2023-08-31 22:26:51,612 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 0 transitions, 0 flow [2023-08-31 22:26:51,612 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) [2023-08-31 22:26:51,614 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONMEMORY_LEAK (14 of 15 remaining) [2023-08-31 22:26:51,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (13 of 15 remaining) [2023-08-31 22:26:51,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2023-08-31 22:26:51,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2023-08-31 22:26:51,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2023-08-31 22:26:51,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2023-08-31 22:26:51,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2023-08-31 22:26:51,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2023-08-31 22:26:51,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2023-08-31 22:26:51,616 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2023-08-31 22:26:51,616 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (4 of 15 remaining) [2023-08-31 22:26:51,616 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 15 remaining) [2023-08-31 22:26:51,616 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 15 remaining) [2023-08-31 22:26:51,616 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 15 remaining) [2023-08-31 22:26:51,616 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 15 remaining) [2023-08-31 22:26:51,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 22:26:51,617 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:26:51,621 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 22:26:51,621 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 22:26:51,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 10:26:51 BasicIcfg [2023-08-31 22:26:51,623 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 22:26:51,624 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 22:26:51,624 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 22:26:51,624 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 22:26:51,624 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 10:26:44" (3/4) ... [2023-08-31 22:26:51,626 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 22:26:51,631 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2023-08-31 22:26:51,631 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2023-08-31 22:26:51,634 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-08-31 22:26:51,634 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-31 22:26:51,634 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-31 22:26:51,634 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 22:26:51,657 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 22:26:51,657 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 22:26:51,657 INFO L158 Benchmark]: Toolchain (without parser) took 8310.27ms. Allocated memory was 86.0MB in the beginning and 268.4MB in the end (delta: 182.5MB). Free memory was 59.1MB in the beginning and 158.7MB in the end (delta: -99.6MB). Peak memory consumption was 81.0MB. Max. memory is 16.1GB. [2023-08-31 22:26:51,657 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 62.9MB. Free memory was 40.3MB in the beginning and 40.2MB in the end (delta: 43.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 22:26:51,658 INFO L158 Benchmark]: CACSL2BoogieTranslator took 533.26ms. Allocated memory is still 86.0MB. Free memory was 58.9MB in the beginning and 58.5MB in the end (delta: 422.3kB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2023-08-31 22:26:51,658 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.34ms. Allocated memory is still 86.0MB. Free memory was 58.5MB in the beginning and 56.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 22:26:51,658 INFO L158 Benchmark]: Boogie Preprocessor took 46.48ms. Allocated memory is still 86.0MB. Free memory was 56.4MB in the beginning and 54.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 22:26:51,659 INFO L158 Benchmark]: RCFGBuilder took 431.61ms. Allocated memory is still 86.0MB. Free memory was 54.6MB in the beginning and 39.1MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-08-31 22:26:51,659 INFO L158 Benchmark]: TraceAbstraction took 7219.82ms. Allocated memory was 86.0MB in the beginning and 268.4MB in the end (delta: 182.5MB). Free memory was 38.3MB in the beginning and 160.7MB in the end (delta: -122.4MB). Peak memory consumption was 92.7MB. Max. memory is 16.1GB. [2023-08-31 22:26:51,659 INFO L158 Benchmark]: Witness Printer took 33.01ms. Allocated memory is still 268.4MB. Free memory was 160.7MB in the beginning and 158.7MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 22:26:51,661 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 62.9MB. Free memory was 40.3MB in the beginning and 40.2MB in the end (delta: 43.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 533.26ms. Allocated memory is still 86.0MB. Free memory was 58.9MB in the beginning and 58.5MB in the end (delta: 422.3kB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.34ms. Allocated memory is still 86.0MB. Free memory was 58.5MB in the beginning and 56.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.48ms. Allocated memory is still 86.0MB. Free memory was 56.4MB in the beginning and 54.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 431.61ms. Allocated memory is still 86.0MB. Free memory was 54.6MB in the beginning and 39.1MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 7219.82ms. Allocated memory was 86.0MB in the beginning and 268.4MB in the end (delta: 182.5MB). Free memory was 38.3MB in the beginning and 160.7MB in the end (delta: -122.4MB). Peak memory consumption was 92.7MB. Max. memory is 16.1GB. * Witness Printer took 33.01ms. Allocated memory is still 268.4MB. Free memory was 160.7MB in the beginning and 158.7MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 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: 7.1s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1055 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 753 mSDsluCounter, 121 SdHoareTripleChecker+Invalid, 1.0s 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, 0.7s 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! [2023-08-31 22:26:51,688 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