/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 23:54:30,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 23:54:30,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 23:54:30,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 23:54:30,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 23:54:30,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 23:54:30,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 23:54:30,386 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 23:54:30,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 23:54:30,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 23:54:30,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 23:54:30,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 23:54:30,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 23:54:30,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 23:54:30,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 23:54:30,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 23:54:30,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 23:54:30,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 23:54:30,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 23:54:30,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 23:54:30,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 23:54:30,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 23:54:30,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 23:54:30,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 23:54:30,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 23:54:30,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 23:54:30,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 23:54:30,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 23:54:30,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 23:54:30,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 23:54:30,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 23:54:30,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 23:54:30,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 23:54:30,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 23:54:30,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 23:54:30,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 23:54:30,434 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 23:54:30,460 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 23:54:30,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 23:54:30,461 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 23:54:30,461 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 23:54:30,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 23:54:30,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 23:54:30,462 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 23:54:30,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 23:54:30,462 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 23:54:30,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 23:54:30,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 23:54:30,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 23:54:30,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 23:54:30,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 23:54:30,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 23:54:30,463 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 23:54:30,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 23:54:30,463 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 23:54:30,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 23:54:30,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 23:54:30,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 23:54:30,463 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 23:54:30,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 23:54:30,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:54:30,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 23:54:30,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 23:54:30,464 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 23:54:30,464 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 23:54:30,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 23:54:30,467 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 23:54:30,467 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 23:54:30,467 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-27 23:54:30,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 23:54:30,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 23:54:30,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 23:54:30,671 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 23:54:30,672 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 23:54:30,673 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson.i [2023-01-27 23:54:31,697 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 23:54:31,964 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 23:54:31,971 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i [2023-01-27 23:54:31,987 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41bc7649c/b8d95a4c402649ff905d11aa6793ebe9/FLAGe2317d51c [2023-01-27 23:54:32,000 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41bc7649c/b8d95a4c402649ff905d11aa6793ebe9 [2023-01-27 23:54:32,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 23:54:32,003 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 23:54:32,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 23:54:32,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 23:54:32,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 23:54:32,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:54:32" (1/1) ... [2023-01-27 23:54:32,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5382a6ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:32, skipping insertion in model container [2023-01-27 23:54:32,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:54:32" (1/1) ... [2023-01-27 23:54:32,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 23:54:32,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 23:54:32,183 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-01-27 23:54:32,295 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/peterson.i[30997,31010] [2023-01-27 23:54:32,303 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/peterson.i[31682,31695] [2023-01-27 23:54:32,308 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:54:32,315 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 23:54:32,327 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-01-27 23:54:32,351 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/peterson.i[30997,31010] [2023-01-27 23:54:32,353 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/peterson.i[31682,31695] [2023-01-27 23:54:32,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:54:32,389 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 23:54:32,389 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 23:54:32,389 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 23:54:32,394 INFO L208 MainTranslator]: Completed translation [2023-01-27 23:54:32,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:32 WrapperNode [2023-01-27 23:54:32,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 23:54:32,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 23:54:32,395 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 23:54:32,396 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 23:54:32,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:32" (1/1) ... [2023-01-27 23:54:32,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:32" (1/1) ... [2023-01-27 23:54:32,425 INFO L138 Inliner]: procedures = 171, calls = 47, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2023-01-27 23:54:32,425 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 23:54:32,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 23:54:32,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 23:54:32,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 23:54:32,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:32" (1/1) ... [2023-01-27 23:54:32,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:32" (1/1) ... [2023-01-27 23:54:32,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:32" (1/1) ... [2023-01-27 23:54:32,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:32" (1/1) ... [2023-01-27 23:54:32,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:32" (1/1) ... [2023-01-27 23:54:32,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:32" (1/1) ... [2023-01-27 23:54:32,441 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:32" (1/1) ... [2023-01-27 23:54:32,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:32" (1/1) ... [2023-01-27 23:54:32,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 23:54:32,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 23:54:32,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 23:54:32,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 23:54:32,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:32" (1/1) ... [2023-01-27 23:54:32,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:54:32,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:54:32,479 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) [2023-01-27 23:54:32,486 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 [2023-01-27 23:54:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 23:54:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-01-27 23:54:32,511 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-01-27 23:54:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-01-27 23:54:32,511 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-01-27 23:54:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 23:54:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 23:54:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 23:54:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 23:54:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 23:54:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 23:54:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 23:54:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 23:54:32,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 23:54:32,513 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 23:54:32,608 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 23:54:32,609 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 23:54:32,786 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 23:54:32,793 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 23:54:32,794 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-27 23:54:32,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:54:32 BoogieIcfgContainer [2023-01-27 23:54:32,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 23:54:32,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 23:54:32,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 23:54:32,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 23:54:32,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 11:54:32" (1/3) ... [2023-01-27 23:54:32,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@702fcb5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:54:32, skipping insertion in model container [2023-01-27 23:54:32,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:32" (2/3) ... [2023-01-27 23:54:32,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@702fcb5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:54:32, skipping insertion in model container [2023-01-27 23:54:32,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:54:32" (3/3) ... [2023-01-27 23:54:32,801 INFO L112 eAbstractionObserver]: Analyzing ICFG peterson.i [2023-01-27 23:54:32,818 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 23:54:32,818 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-27 23:54:32,818 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 23:54:32,869 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 23:54:32,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 78 transitions, 172 flow [2023-01-27 23:54:32,930 INFO L130 PetriNetUnfolder]: 6/76 cut-off events. [2023-01-27 23:54:32,930 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:54:32,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 76 events. 6/76 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-01-27 23:54:32,940 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 78 transitions, 172 flow [2023-01-27 23:54:32,946 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 67 transitions, 143 flow [2023-01-27 23:54:32,949 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 23:54:32,957 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 67 transitions, 143 flow [2023-01-27 23:54:32,959 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 67 transitions, 143 flow [2023-01-27 23:54:32,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 67 transitions, 143 flow [2023-01-27 23:54:32,975 INFO L130 PetriNetUnfolder]: 6/67 cut-off events. [2023-01-27 23:54:32,975 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 23:54:32,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 67 events. 6/67 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-01-27 23:54:32,977 INFO L119 LiptonReduction]: Number of co-enabled transitions 1188 [2023-01-27 23:54:34,520 INFO L134 LiptonReduction]: Checked pairs total: 4187 [2023-01-27 23:54:34,521 INFO L136 LiptonReduction]: Total number of compositions: 44 [2023-01-27 23:54:34,533 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 23:54:34,538 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=LoopsAndPotentialCycles, 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;@35f9df4f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 23:54:34,538 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-01-27 23:54:34,542 INFO L130 PetriNetUnfolder]: 1/15 cut-off events. [2023-01-27 23:54:34,542 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 23:54:34,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:54:34,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:54:34,543 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 23:54:34,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:54:34,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1199357905, now seen corresponding path program 1 times [2023-01-27 23:54:34,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:54:34,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295505621] [2023-01-27 23:54:34,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:54:34,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:54:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:54:34,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:54:34,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:54:34,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295505621] [2023-01-27 23:54:34,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295505621] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:54:34,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:54:34,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 23:54:34,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932375850] [2023-01-27 23:54:34,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:54:34,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:54:34,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:54:34,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:54:34,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:54:34,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 122 [2023-01-27 23:54:34,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:54:34,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:54:34,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 122 [2023-01-27 23:54:34,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:54:34,977 INFO L130 PetriNetUnfolder]: 193/398 cut-off events. [2023-01-27 23:54:34,978 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-01-27 23:54:34,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 787 conditions, 398 events. 193/398 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1829 event pairs, 74 based on Foata normal form. 24/332 useless extension candidates. Maximal degree in co-relation 672. Up to 185 conditions per place. [2023-01-27 23:54:34,985 INFO L137 encePairwiseOnDemand]: 116/122 looper letters, 26 selfloop transitions, 3 changer transitions 2/39 dead transitions. [2023-01-27 23:54:34,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 39 transitions, 152 flow [2023-01-27 23:54:34,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:54:34,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:54:34,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2023-01-27 23:54:34,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6120218579234973 [2023-01-27 23:54:35,000 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2023-01-27 23:54:35,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2023-01-27 23:54:35,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:54:35,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2023-01-27 23:54:35,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:54:35,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:54:35,014 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:54:35,015 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 67 flow. Second operand 3 states and 224 transitions. [2023-01-27 23:54:35,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 39 transitions, 152 flow [2023-01-27 23:54:35,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 39 transitions, 145 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 23:54:35,019 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 80 flow [2023-01-27 23:54:35,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2023-01-27 23:54:35,026 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2023-01-27 23:54:35,026 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 80 flow [2023-01-27 23:54:35,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:54:35,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:54:35,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:54:35,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 23:54:35,027 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 23:54:35,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:54:35,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1903635038, now seen corresponding path program 1 times [2023-01-27 23:54:35,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:54:35,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755028062] [2023-01-27 23:54:35,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:54:35,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:54:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:54:35,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:54:35,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:54:35,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755028062] [2023-01-27 23:54:35,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755028062] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:54:35,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:54:35,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 23:54:35,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756341778] [2023-01-27 23:54:35,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:54:35,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:54:35,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:54:35,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:54:35,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:54:35,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 122 [2023-01-27 23:54:35,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:54:35,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:54:35,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 122 [2023-01-27 23:54:35,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:54:35,209 INFO L130 PetriNetUnfolder]: 145/318 cut-off events. [2023-01-27 23:54:35,210 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2023-01-27 23:54:35,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685 conditions, 318 events. 145/318 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1389 event pairs, 82 based on Foata normal form. 22/316 useless extension candidates. Maximal degree in co-relation 271. Up to 182 conditions per place. [2023-01-27 23:54:35,213 INFO L137 encePairwiseOnDemand]: 117/122 looper letters, 21 selfloop transitions, 2 changer transitions 5/36 dead transitions. [2023-01-27 23:54:35,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 36 transitions, 151 flow [2023-01-27 23:54:35,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:54:35,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:54:35,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 220 transitions. [2023-01-27 23:54:35,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6010928961748634 [2023-01-27 23:54:35,219 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 220 transitions. [2023-01-27 23:54:35,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 220 transitions. [2023-01-27 23:54:35,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:54:35,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 220 transitions. [2023-01-27 23:54:35,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:54:35,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:54:35,224 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:54:35,224 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 80 flow. Second operand 3 states and 220 transitions. [2023-01-27 23:54:35,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 36 transitions, 151 flow [2023-01-27 23:54:35,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 145 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 23:54:35,227 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 82 flow [2023-01-27 23:54:35,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2023-01-27 23:54:35,228 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2023-01-27 23:54:35,229 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 82 flow [2023-01-27 23:54:35,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:54:35,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:54:35,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:54:35,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 23:54:35,230 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 23:54:35,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:54:35,233 INFO L85 PathProgramCache]: Analyzing trace with hash -105818293, now seen corresponding path program 1 times [2023-01-27 23:54:35,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:54:35,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718870722] [2023-01-27 23:54:35,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:54:35,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:54:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:54:35,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:54:35,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:54:35,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718870722] [2023-01-27 23:54:35,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718870722] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:54:35,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:54:35,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 23:54:35,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455113242] [2023-01-27 23:54:35,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:54:35,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 23:54:35,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:54:35,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 23:54:35,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-27 23:54:35,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 122 [2023-01-27 23:54:35,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 82 flow. Second operand has 6 states, 6 states have (on average 58.333333333333336) internal successors, (350), 6 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:54:35,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:54:35,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 122 [2023-01-27 23:54:35,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:54:35,611 INFO L130 PetriNetUnfolder]: 382/699 cut-off events. [2023-01-27 23:54:35,611 INFO L131 PetriNetUnfolder]: For 257/257 co-relation queries the response was YES. [2023-01-27 23:54:35,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1529 conditions, 699 events. 382/699 cut-off events. For 257/257 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3126 event pairs, 55 based on Foata normal form. 30/727 useless extension candidates. Maximal degree in co-relation 1308. Up to 307 conditions per place. [2023-01-27 23:54:35,614 INFO L137 encePairwiseOnDemand]: 113/122 looper letters, 45 selfloop transitions, 10 changer transitions 35/92 dead transitions. [2023-01-27 23:54:35,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 92 transitions, 418 flow [2023-01-27 23:54:35,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 23:54:35,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 23:54:35,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 653 transitions. [2023-01-27 23:54:35,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5352459016393443 [2023-01-27 23:54:35,617 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 653 transitions. [2023-01-27 23:54:35,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 653 transitions. [2023-01-27 23:54:35,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:54:35,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 653 transitions. [2023-01-27 23:54:35,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 65.3) internal successors, (653), 10 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:54:35,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 122.0) internal successors, (1342), 11 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:54:35,623 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 122.0) internal successors, (1342), 11 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:54:35,623 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 82 flow. Second operand 10 states and 653 transitions. [2023-01-27 23:54:35,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 92 transitions, 418 flow [2023-01-27 23:54:35,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 92 transitions, 415 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 23:54:35,627 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 166 flow [2023-01-27 23:54:35,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=166, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2023-01-27 23:54:35,628 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2023-01-27 23:54:35,628 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 166 flow [2023-01-27 23:54:35,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.333333333333336) internal successors, (350), 6 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:54:35,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:54:35,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:54:35,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 23:54:35,629 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 23:54:35,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:54:35,629 INFO L85 PathProgramCache]: Analyzing trace with hash 532751593, now seen corresponding path program 2 times [2023-01-27 23:54:35,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:54:35,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375617154] [2023-01-27 23:54:35,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:54:35,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:54:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:54:35,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:54:35,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:54:35,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375617154] [2023-01-27 23:54:35,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375617154] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:54:35,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:54:35,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 23:54:35,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465351326] [2023-01-27 23:54:35,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:54:35,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 23:54:35,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:54:35,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 23:54:35,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-27 23:54:35,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 122 [2023-01-27 23:54:35,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 166 flow. Second operand has 6 states, 6 states have (on average 58.333333333333336) internal successors, (350), 6 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:54:35,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:54:35,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 122 [2023-01-27 23:54:35,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:54:35,903 INFO L130 PetriNetUnfolder]: 313/582 cut-off events. [2023-01-27 23:54:35,903 INFO L131 PetriNetUnfolder]: For 702/704 co-relation queries the response was YES. [2023-01-27 23:54:35,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1731 conditions, 582 events. 313/582 cut-off events. For 702/704 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2499 event pairs, 40 based on Foata normal form. 24/604 useless extension candidates. Maximal degree in co-relation 1274. Up to 233 conditions per place. [2023-01-27 23:54:35,906 INFO L137 encePairwiseOnDemand]: 113/122 looper letters, 0 selfloop transitions, 0 changer transitions 90/90 dead transitions. [2023-01-27 23:54:35,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 90 transitions, 587 flow [2023-01-27 23:54:35,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 23:54:35,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 23:54:35,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 579 transitions. [2023-01-27 23:54:35,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5273224043715847 [2023-01-27 23:54:35,911 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 579 transitions. [2023-01-27 23:54:35,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 579 transitions. [2023-01-27 23:54:35,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:54:35,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 579 transitions. [2023-01-27 23:54:35,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 64.33333333333333) internal successors, (579), 9 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:54:35,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 122.0) internal successors, (1220), 10 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:54:35,916 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 122.0) internal successors, (1220), 10 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:54:35,916 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 166 flow. Second operand 9 states and 579 transitions. [2023-01-27 23:54:35,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 90 transitions, 587 flow [2023-01-27 23:54:35,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 90 transitions, 523 flow, removed 30 selfloop flow, removed 4 redundant places. [2023-01-27 23:54:35,925 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2023-01-27 23:54:35,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2023-01-27 23:54:35,927 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2023-01-27 23:54:35,927 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2023-01-27 23:54:35,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.333333333333336) internal successors, (350), 6 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:54:35,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-01-27 23:54:35,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-01-27 23:54:35,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-01-27 23:54:35,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-01-27 23:54:35,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-01-27 23:54:35,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-01-27 23:54:35,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 23:54:35,933 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-01-27 23:54:35,937 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 23:54:35,937 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 23:54:35,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 11:54:35 BasicIcfg [2023-01-27 23:54:35,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 23:54:35,943 INFO L158 Benchmark]: Toolchain (without parser) took 3940.03ms. Allocated memory was 350.2MB in the beginning and 656.4MB in the end (delta: 306.2MB). Free memory was 313.1MB in the beginning and 384.4MB in the end (delta: -71.3MB). Peak memory consumption was 237.4MB. Max. memory is 16.0GB. [2023-01-27 23:54:35,943 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 350.2MB. Free memory is still 299.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 23:54:35,944 INFO L158 Benchmark]: CACSL2BoogieTranslator took 388.72ms. Allocated memory is still 350.2MB. Free memory was 313.1MB in the beginning and 293.2MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-27 23:54:35,945 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.00ms. Allocated memory is still 350.2MB. Free memory was 293.2MB in the beginning and 291.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 23:54:35,945 INFO L158 Benchmark]: Boogie Preprocessor took 17.92ms. Allocated memory is still 350.2MB. Free memory was 291.1MB in the beginning and 289.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 23:54:35,946 INFO L158 Benchmark]: RCFGBuilder took 351.29ms. Allocated memory is still 350.2MB. Free memory was 289.4MB in the beginning and 276.4MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-27 23:54:35,949 INFO L158 Benchmark]: TraceAbstraction took 3145.91ms. Allocated memory was 350.2MB in the beginning and 656.4MB in the end (delta: 306.2MB). Free memory was 275.6MB in the beginning and 384.4MB in the end (delta: -108.8MB). Peak memory consumption was 199.7MB. Max. memory is 16.0GB. [2023-01-27 23:54:35,950 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 350.2MB. Free memory is still 299.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 388.72ms. Allocated memory is still 350.2MB. Free memory was 313.1MB in the beginning and 293.2MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 30.00ms. Allocated memory is still 350.2MB. Free memory was 293.2MB in the beginning and 291.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 17.92ms. Allocated memory is still 350.2MB. Free memory was 291.1MB in the beginning and 289.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 351.29ms. Allocated memory is still 350.2MB. Free memory was 289.4MB in the beginning and 276.4MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3145.91ms. Allocated memory was 350.2MB in the beginning and 656.4MB in the end (delta: 306.2MB). Free memory was 275.6MB in the beginning and 384.4MB in the end (delta: -108.8MB). Peak memory consumption was 199.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 68 PlacesBefore, 33 PlacesAfterwards, 67 TransitionsBefore, 29 TransitionsAfterwards, 1188 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 3 ChoiceCompositions, 44 TotalNumberOfCompositions, 4187 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2495, independent: 2278, independent conditional: 0, independent unconditional: 2278, dependent: 217, dependent conditional: 0, dependent unconditional: 217, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 648, independent: 619, independent conditional: 0, independent unconditional: 619, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2495, independent: 1659, independent conditional: 0, independent unconditional: 1659, dependent: 188, dependent conditional: 0, dependent unconditional: 188, unknown: 648, unknown conditional: 0, unknown unconditional: 648] , Statistics on independence cache: Total cache size (in pairs): 154, Positive cache size: 137, Positive conditional cache size: 0, Positive unconditional cache size: 137, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 753]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 725]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 107 locations, 6 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: 3.0s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 129 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 129 mSDsluCounter, 52 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 511 IncrementalHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 31 mSDtfsCounter, 511 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=3, InterpolantAutomatonStates: 25, 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, 0.4s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 108 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-27 23:54:35,969 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...