/usr/bin/java -Xmx8000000000 -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-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/singleton.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 06:15:08,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 06:15:08,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 06:15:08,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 06:15:08,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 06:15:08,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 06:15:08,466 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 06:15:08,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 06:15:08,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 06:15:08,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 06:15:08,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 06:15:08,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 06:15:08,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 06:15:08,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 06:15:08,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 06:15:08,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 06:15:08,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 06:15:08,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 06:15:08,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 06:15:08,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 06:15:08,480 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 06:15:08,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 06:15:08,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 06:15:08,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 06:15:08,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 06:15:08,486 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 06:15:08,487 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 06:15:08,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 06:15:08,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 06:15:08,489 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 06:15:08,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 06:15:08,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 06:15:08,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 06:15:08,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 06:15:08,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 06:15:08,493 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 06:15:08,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 06:15:08,494 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 06:15:08,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 06:15:08,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 06:15:08,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 06:15:08,496 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-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2022-12-06 06:15:08,532 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 06:15:08,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 06:15:08,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 06:15:08,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 06:15:08,534 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 06:15:08,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 06:15:08,535 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 06:15:08,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 06:15:08,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 06:15:08,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 06:15:08,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 06:15:08,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 06:15:08,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 06:15:08,537 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 06:15:08,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 06:15:08,537 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 06:15:08,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 06:15:08,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 06:15:08,538 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 06:15:08,538 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 06:15:08,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 06:15:08,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 06:15:08,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 06:15:08,538 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 06:15:08,539 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 06:15:08,539 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 06:15:08,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 06:15:08,539 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-06 06:15:08,539 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-06 06:15:08,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 06:15:08,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 06:15:08,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 06:15:08,993 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 06:15:09,003 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 06:15:09,005 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/singleton.i [2022-12-06 06:15:10,793 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 06:15:11,257 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 06:15:11,257 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton.i [2022-12-06 06:15:11,281 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55b5b88be/3a66906d63984355b57b54cfd82a8d25/FLAG6c40cc350 [2022-12-06 06:15:11,302 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55b5b88be/3a66906d63984355b57b54cfd82a8d25 [2022-12-06 06:15:11,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 06:15:11,306 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 06:15:11,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 06:15:11,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 06:15:11,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 06:15:11,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:15:11" (1/1) ... [2022-12-06 06:15:11,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78056759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:15:11, skipping insertion in model container [2022-12-06 06:15:11,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:15:11" (1/1) ... [2022-12-06 06:15:11,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 06:15:11,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 06:15:11,634 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-06 06:15:11,913 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton.i[55547,55560] [2022-12-06 06:15:11,919 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:15:11,921 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:15:11,921 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:15:11,922 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:15:11,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 06:15:11,985 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 06:15:12,036 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-06 06:15:12,077 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton.i[55547,55560] [2022-12-06 06:15:12,078 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:15:12,079 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:15:12,079 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:15:12,080 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:15:12,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 06:15:12,162 INFO L208 MainTranslator]: Completed translation [2022-12-06 06:15:12,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:15:12 WrapperNode [2022-12-06 06:15:12,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 06:15:12,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 06:15:12,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 06:15:12,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 06:15:12,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:15:12" (1/1) ... [2022-12-06 06:15:12,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:15:12" (1/1) ... [2022-12-06 06:15:12,255 INFO L138 Inliner]: procedures = 325, calls = 52, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2022-12-06 06:15:12,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 06:15:12,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 06:15:12,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 06:15:12,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 06:15:12,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:15:12" (1/1) ... [2022-12-06 06:15:12,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:15:12" (1/1) ... [2022-12-06 06:15:12,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:15:12" (1/1) ... [2022-12-06 06:15:12,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:15:12" (1/1) ... [2022-12-06 06:15:12,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:15:12" (1/1) ... [2022-12-06 06:15:12,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:15:12" (1/1) ... [2022-12-06 06:15:12,333 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:15:12" (1/1) ... [2022-12-06 06:15:12,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:15:12" (1/1) ... [2022-12-06 06:15:12,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 06:15:12,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 06:15:12,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 06:15:12,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 06:15:12,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:15:12" (1/1) ... [2022-12-06 06:15:12,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 06:15:12,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 06:15:12,381 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) [2022-12-06 06:15:12,399 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 [2022-12-06 06:15:12,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-06 06:15:12,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 06:15:12,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 06:15:12,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-06 06:15:12,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 06:15:12,441 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2022-12-06 06:15:12,442 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2022-12-06 06:15:12,442 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-06 06:15:12,442 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-06 06:15:12,448 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-06 06:15:12,449 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-06 06:15:12,449 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-06 06:15:12,449 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-06 06:15:12,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 06:15:12,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-06 06:15:12,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 06:15:12,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 06:15:12,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 06:15:12,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 06:15:12,451 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 06:15:12,628 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 06:15:12,631 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 06:15:12,891 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 06:15:12,897 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 06:15:12,898 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-06 06:15:12,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:15:12 BoogieIcfgContainer [2022-12-06 06:15:12,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 06:15:12,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 06:15:12,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 06:15:12,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 06:15:12,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:15:11" (1/3) ... [2022-12-06 06:15:12,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3586c9c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:15:12, skipping insertion in model container [2022-12-06 06:15:12,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:15:12" (2/3) ... [2022-12-06 06:15:12,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3586c9c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:15:12, skipping insertion in model container [2022-12-06 06:15:12,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:15:12" (3/3) ... [2022-12-06 06:15:12,921 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton.i [2022-12-06 06:15:12,957 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 06:15:12,958 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 06:15:12,958 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 06:15:13,172 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2022-12-06 06:15:13,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 188 transitions, 483 flow [2022-12-06 06:15:13,330 INFO L130 PetriNetUnfolder]: 6/125 cut-off events. [2022-12-06 06:15:13,331 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-06 06:15:13,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 125 events. 6/125 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 113. Up to 3 conditions per place. [2022-12-06 06:15:13,336 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 188 transitions, 483 flow [2022-12-06 06:15:13,359 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 116 transitions, 283 flow [2022-12-06 06:15:13,361 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 06:15:13,397 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 116 transitions, 283 flow [2022-12-06 06:15:13,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 116 transitions, 283 flow [2022-12-06 06:15:13,466 INFO L130 PetriNetUnfolder]: 5/116 cut-off events. [2022-12-06 06:15:13,466 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-06 06:15:13,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 116 events. 5/116 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 44 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 113. Up to 3 conditions per place. [2022-12-06 06:15:13,470 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 116 transitions, 283 flow [2022-12-06 06:15:13,471 INFO L188 LiptonReduction]: Number of co-enabled transitions 1344 [2022-12-06 06:15:17,412 INFO L203 LiptonReduction]: Total number of compositions: 80 [2022-12-06 06:15:17,439 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 06:15:17,464 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=REPEATED_LIPTON_PN, 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;@4df8247f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 06:15:17,464 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-06 06:15:17,485 INFO L130 PetriNetUnfolder]: 5/35 cut-off events. [2022-12-06 06:15:17,486 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-06 06:15:17,486 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 06:15:17,487 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 06:15:17,487 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-12-06 06:15:17,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 06:15:17,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1320876981, now seen corresponding path program 1 times [2022-12-06 06:15:17,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 06:15:17,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859840942] [2022-12-06 06:15:17,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 06:15:17,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 06:15:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 06:15:18,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 06:15:18,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 06:15:18,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859840942] [2022-12-06 06:15:18,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859840942] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 06:15:18,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 06:15:18,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-06 06:15:18,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183104814] [2022-12-06 06:15:18,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 06:15:18,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 06:15:18,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 06:15:18,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 06:15:18,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 06:15:18,402 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 36 [2022-12-06 06:15:18,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 36 transitions, 123 flow. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 06:15:18,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 06:15:18,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 36 [2022-12-06 06:15:18,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 06:15:18,866 INFO L130 PetriNetUnfolder]: 582/904 cut-off events. [2022-12-06 06:15:18,866 INFO L131 PetriNetUnfolder]: For 104/104 co-relation queries the response was YES. [2022-12-06 06:15:18,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2036 conditions, 904 events. 582/904 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3027 event pairs, 172 based on Foata normal form. 1/847 useless extension candidates. Maximal degree in co-relation 2014. Up to 523 conditions per place. [2022-12-06 06:15:18,875 INFO L137 encePairwiseOnDemand]: 28/36 looper letters, 43 selfloop transitions, 7 changer transitions 11/61 dead transitions. [2022-12-06 06:15:18,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 61 transitions, 331 flow [2022-12-06 06:15:18,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 06:15:18,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 06:15:18,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2022-12-06 06:15:18,888 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2022-12-06 06:15:18,890 INFO L175 Difference]: Start difference. First operand has 50 places, 36 transitions, 123 flow. Second operand 3 states and 62 transitions. [2022-12-06 06:15:18,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 61 transitions, 331 flow [2022-12-06 06:15:18,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 61 transitions, 273 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-12-06 06:15:18,899 INFO L231 Difference]: Finished difference. Result has 42 places, 42 transitions, 143 flow [2022-12-06 06:15:18,901 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=42, PETRI_TRANSITIONS=42} [2022-12-06 06:15:18,906 INFO L294 CegarLoopForPetriNet]: 50 programPoint places, -8 predicate places. [2022-12-06 06:15:18,906 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 06:15:18,907 INFO L89 Accepts]: Start accepts. Operand has 42 places, 42 transitions, 143 flow [2022-12-06 06:15:18,911 INFO L95 Accepts]: Finished accepts. [2022-12-06 06:15:18,911 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 06:15:18,912 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 42 transitions, 143 flow [2022-12-06 06:15:18,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 42 transitions, 143 flow [2022-12-06 06:15:18,933 INFO L130 PetriNetUnfolder]: 46/145 cut-off events. [2022-12-06 06:15:18,933 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-12-06 06:15:18,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 145 events. 46/145 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 456 event pairs, 9 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 256. Up to 38 conditions per place. [2022-12-06 06:15:18,937 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 42 transitions, 143 flow [2022-12-06 06:15:18,938 INFO L188 LiptonReduction]: Number of co-enabled transitions 172 [2022-12-06 06:15:18,939 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 06:15:18,941 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 35 [2022-12-06 06:15:18,941 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 42 transitions, 143 flow [2022-12-06 06:15:18,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 06:15:18,943 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 06:15:18,943 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 06:15:18,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 06:15:18,953 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-12-06 06:15:18,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 06:15:18,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1290810545, now seen corresponding path program 2 times [2022-12-06 06:15:18,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 06:15:18,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707192359] [2022-12-06 06:15:18,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 06:15:18,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 06:15:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-06 06:15:19,110 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-06 06:15:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-06 06:15:19,236 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-06 06:15:19,237 INFO L373 BasicCegarLoop]: Counterexample is feasible [2022-12-06 06:15:19,238 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (11 of 12 remaining) [2022-12-06 06:15:19,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 12 remaining) [2022-12-06 06:15:19,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 12 remaining) [2022-12-06 06:15:19,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 12 remaining) [2022-12-06 06:15:19,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 12 remaining) [2022-12-06 06:15:19,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 12 remaining) [2022-12-06 06:15:19,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 12 remaining) [2022-12-06 06:15:19,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2022-12-06 06:15:19,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 12 remaining) [2022-12-06 06:15:19,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 12 remaining) [2022-12-06 06:15:19,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2022-12-06 06:15:19,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err10INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-12-06 06:15:19,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 06:15:19,242 INFO L458 BasicCegarLoop]: Path program histogram: [2] [2022-12-06 06:15:19,247 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 06:15:19,247 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 06:15:19,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:15:19 BasicIcfg [2022-12-06 06:15:19,344 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 06:15:19,347 INFO L158 Benchmark]: Toolchain (without parser) took 8038.70ms. Allocated memory was 177.2MB in the beginning and 212.9MB in the end (delta: 35.7MB). Free memory was 150.8MB in the beginning and 144.2MB in the end (delta: 6.6MB). Peak memory consumption was 43.1MB. Max. memory is 8.0GB. [2022-12-06 06:15:19,347 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 177.2MB. Free memory is still 153.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 06:15:19,347 INFO L158 Benchmark]: CACSL2BoogieTranslator took 853.96ms. Allocated memory is still 177.2MB. Free memory was 150.8MB in the beginning and 117.0MB in the end (delta: 33.8MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2022-12-06 06:15:19,348 INFO L158 Benchmark]: Boogie Procedure Inliner took 92.49ms. Allocated memory is still 177.2MB. Free memory was 117.0MB in the beginning and 114.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 06:15:19,348 INFO L158 Benchmark]: Boogie Preprocessor took 78.98ms. Allocated memory is still 177.2MB. Free memory was 114.4MB in the beginning and 112.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-06 06:15:19,348 INFO L158 Benchmark]: RCFGBuilder took 576.22ms. Allocated memory is still 177.2MB. Free memory was 112.8MB in the beginning and 96.5MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-12-06 06:15:19,352 INFO L158 Benchmark]: TraceAbstraction took 6428.43ms. Allocated memory was 177.2MB in the beginning and 212.9MB in the end (delta: 35.7MB). Free memory was 96.0MB in the beginning and 144.2MB in the end (delta: -48.1MB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 06:15:19,353 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 177.2MB. Free memory is still 153.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 853.96ms. Allocated memory is still 177.2MB. Free memory was 150.8MB in the beginning and 117.0MB in the end (delta: 33.8MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 92.49ms. Allocated memory is still 177.2MB. Free memory was 117.0MB in the beginning and 114.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 78.98ms. Allocated memory is still 177.2MB. Free memory was 114.4MB in the beginning and 112.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 576.22ms. Allocated memory is still 177.2MB. Free memory was 112.8MB in the beginning and 96.5MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 6428.43ms. Allocated memory was 177.2MB in the beginning and 212.9MB in the end (delta: 35.7MB). Free memory was 96.0MB in the beginning and 144.2MB in the end (delta: -48.1MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 130 PlacesBefore, 50 PlacesAfterwards, 116 TransitionsBefore, 36 TransitionsAfterwards, 1344 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 19 TrivialYvCompositions, 61 ConcurrentYvCompositions, 0 ChoiceCompositions, 80 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 613, independent: 607, independent conditional: 607, independent unconditional: 0, dependent: 6, dependent conditional: 6, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 613, independent: 607, independent conditional: 0, independent unconditional: 607, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 613, independent: 607, independent conditional: 0, independent unconditional: 607, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 613, independent: 607, independent conditional: 0, independent unconditional: 607, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 613, independent: 607, independent conditional: 0, independent unconditional: 607, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 613, independent: 606, independent conditional: 0, independent unconditional: 606, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 7, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 15, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 613, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 613, unknown conditional: 0, unknown unconditional: 613] , Statistics on independence cache: Total cache size (in pairs): 909, Positive cache size: 903, Positive conditional cache size: 0, Positive unconditional cache size: 903, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 42 PlacesBefore, 42 PlacesAfterwards, 42 TransitionsBefore, 42 TransitionsAfterwards, 172 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - CounterExampleResult [Line: 1123]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1124] 0 char *v; [L1161] 0 pthread_t t; [L1162] FCALL, FORK 0 pthread_create(&t, 0, thread0, 0) VAL [arg={0:0}, pthread_create(&t, 0, thread0, 0)=-2, t={8:0}, v={0:0}] [L1163] 0 \read(t) VAL [\read(t)=-2, arg={0:0}, t={8:0}, v={0:0}] [L1146] 1 pthread_t t1, t2, t3, t4, t5; [L1147] FCALL, FORK 1 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t1, 0, thread1, 0)=-1, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={0:0}] [L1148] 1 \read(t1) VAL [\read(t1)=-1, arg={0:0}, arg={0:0}, arg={0:0}, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={0:0}] [L1127] 2 v = malloc(sizeof(char)) [L1128] 2 return 0; [L1148] FCALL, JOIN 2 pthread_join(t1, 0) VAL [\read(t1)=-1, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={5:0}] [L1149] FCALL, FORK 1 pthread_create(&t2, 0, thread2, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t2, 0, thread2, 0)=0, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={5:0}] [L1150] FCALL, FORK 1 pthread_create(&t3, 0, thread3, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t3, 0, thread3, 0)=1, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={5:0}] [L1151] FCALL, FORK 1 pthread_create(&t4, 0, thread2, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t4, 0, thread2, 0)=2, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={5:0}] [L1133] 3 v[0] = 'X' [L1135] 3 return 0; [L1152] FCALL, FORK 1 pthread_create(&t5, 0, thread2, 0) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t5, 0, thread2, 0)=3, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={5:0}] [L1153] 1 \read(t2) VAL [\read(t2)=0, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={5:0}] [L1133] 5 v[0] = 'X' [L1135] 5 return 0; [L1133] 6 v[0] = 'X' [L1135] 6 return 0; [L1153] FCALL, JOIN 3 pthread_join(t2, 0) VAL [\read(t2)=0, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={5:0}] [L1154] 1 \read(t3) VAL [\read(t3)=1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={5:0}] [L1140] 4 v[0] = 'Y' [L1142] 4 return 0; [L1154] FCALL, JOIN 4 pthread_join(t3, 0) VAL [\read(t3)=1, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={5:0}] [L1155] 1 \read(t4) VAL [\read(t4)=2, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={5:0}] [L1155] FCALL, JOIN 5 pthread_join(t4, 0) VAL [\read(t4)=2, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={5:0}] [L1156] 1 \read(t5) VAL [\read(t5)=3, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={5:0}] [L1156] FCALL, JOIN 6 pthread_join(t5, 0) VAL [\read(t5)=3, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={5:0}] [L1157] 1 return 0; [L1157] 1 return 0; [L1157] 1 return 0; [L1157] 1 return 0; [L1157] 1 return 0; [L1157] 1 return 0; [L1163] FCALL, JOIN 1 pthread_join(t, 0) VAL [\read(t)=-2, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t={8:0}, v={5:0}] [L1164] EXPR 0 v[0] [L1164] CALL 0 __VERIFIER_assert(v[0] == 'X') [L1123] COND TRUE 0 !expression [L1123] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, v={5:0}] - UnprovableResult [Line: 1149]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1147]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1151]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1150]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1152]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1162]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1150]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1147]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1151]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1149]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1152]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 11 procedures, 218 locations, 12 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: 6.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 85 IncrementalHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 85 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=143occurred in iteration=1, InterpolantAutomatonStates: 3, 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, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 54 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 RESULT: Ultimate proved your program to be incorrect! [2022-12-06 06:15:19,376 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...