/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-MCRwithDepranks-Lazy.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/05-end-no-begin.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-16 09:52:47,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-16 09:52:47,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-16 09:52:47,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-16 09:52:47,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-16 09:52:47,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-16 09:52:47,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-16 09:52:47,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-16 09:52:47,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-16 09:52:47,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-16 09:52:47,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-16 09:52:47,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-16 09:52:47,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-16 09:52:47,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-16 09:52:47,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-16 09:52:47,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-16 09:52:47,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-16 09:52:47,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-16 09:52:47,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-16 09:52:47,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-16 09:52:47,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-16 09:52:47,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-16 09:52:47,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-16 09:52:47,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-16 09:52:47,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-16 09:52:47,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-16 09:52:47,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-16 09:52:47,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-16 09:52:47,469 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-MCRwithDepranks-Lazy.epf [2022-02-16 09:52:47,485 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-16 09:52:47,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-16 09:52:47,485 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-16 09:52:47,486 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-16 09:52:47,486 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-16 09:52:47,487 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-16 09:52:47,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-16 09:52:47,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-16 09:52:47,487 INFO L138 SettingsManager]: * Use SBE=true [2022-02-16 09:52:47,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-16 09:52:47,488 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-16 09:52:47,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-16 09:52:47,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-16 09:52:47,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-16 09:52:47,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-16 09:52:47,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-16 09:52:47,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-16 09:52:47,489 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-16 09:52:47,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-16 09:52:47,489 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-16 09:52:47,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-16 09:52:47,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-16 09:52:47,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-16 09:52:47,489 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-16 09:52:47,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-16 09:52:47,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-16 09:52:47,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-16 09:52:47,490 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-16 09:52:47,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-16 09:52:47,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-16 09:52:47,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-16 09:52:47,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-16 09:52:47,491 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-16 09:52:47,491 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-16 09:52:47,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-16 09:52:47,491 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-16 09:52:47,491 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-16 09:52:47,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-16 09:52:47,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-16 09:52:47,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-16 09:52:47,701 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-16 09:52:47,701 INFO L275 PluginConnector]: CDTParser initialized [2022-02-16 09:52:47,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/05-end-no-begin.c [2022-02-16 09:52:47,748 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d58000b9c/e73a8cc475184224a43d84101e87f6ea/FLAGad8cb9971 [2022-02-16 09:52:48,088 INFO L306 CDTParser]: Found 1 translation units. [2022-02-16 09:52:48,089 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/05-end-no-begin.c [2022-02-16 09:52:48,089 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2022-02-16 09:52:48,108 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d58000b9c/e73a8cc475184224a43d84101e87f6ea/FLAGad8cb9971 [2022-02-16 09:52:48,117 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d58000b9c/e73a8cc475184224a43d84101e87f6ea [2022-02-16 09:52:48,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-16 09:52:48,120 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-16 09:52:48,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-16 09:52:48,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-16 09:52:48,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-16 09:52:48,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 09:52:48" (1/1) ... [2022-02-16 09:52:48,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a82d44c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 09:52:48, skipping insertion in model container [2022-02-16 09:52:48,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 09:52:48" (1/1) ... [2022-02-16 09:52:48,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-16 09:52:48,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-16 09:52:48,272 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-16 09:52:48,280 INFO L203 MainTranslator]: Completed pre-run [2022-02-16 09:52:48,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-16 09:52:48,298 INFO L208 MainTranslator]: Completed translation [2022-02-16 09:52:48,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 09:52:48 WrapperNode [2022-02-16 09:52:48,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-16 09:52:48,299 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-16 09:52:48,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-16 09:52:48,299 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-16 09:52:48,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 09:52:48" (1/1) ... [2022-02-16 09:52:48,309 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 09:52:48" (1/1) ... [2022-02-16 09:52:48,321 INFO L137 Inliner]: procedures = 10, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-02-16 09:52:48,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-16 09:52:48,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-16 09:52:48,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-16 09:52:48,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-16 09:52:48,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 09:52:48" (1/1) ... [2022-02-16 09:52:48,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 09:52:48" (1/1) ... [2022-02-16 09:52:48,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 09:52:48" (1/1) ... [2022-02-16 09:52:48,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 09:52:48" (1/1) ... [2022-02-16 09:52:48,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 09:52:48" (1/1) ... [2022-02-16 09:52:48,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 09:52:48" (1/1) ... [2022-02-16 09:52:48,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 09:52:48" (1/1) ... [2022-02-16 09:52:48,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-16 09:52:48,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-16 09:52:48,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-16 09:52:48,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-16 09:52:48,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 09:52:48" (1/1) ... [2022-02-16 09:52:48,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-16 09:52:48,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 09:52:48,368 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) [2022-02-16 09:52:48,383 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 [2022-02-16 09:52:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-16 09:52:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-16 09:52:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-02-16 09:52:48,405 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-02-16 09:52:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-16 09:52:48,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-16 09:52:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-16 09:52:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-16 09:52:48,406 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-16 09:52:48,453 INFO L234 CfgBuilder]: Building ICFG [2022-02-16 09:52:48,454 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-16 09:52:48,563 INFO L275 CfgBuilder]: Performing block encoding [2022-02-16 09:52:48,567 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-16 09:52:48,567 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-16 09:52:48,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 09:52:48 BoogieIcfgContainer [2022-02-16 09:52:48,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-16 09:52:48,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-16 09:52:48,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-16 09:52:48,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-16 09:52:48,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 09:52:48" (1/3) ... [2022-02-16 09:52:48,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742a6cd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 09:52:48, skipping insertion in model container [2022-02-16 09:52:48,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 09:52:48" (2/3) ... [2022-02-16 09:52:48,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742a6cd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 09:52:48, skipping insertion in model container [2022-02-16 09:52:48,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 09:52:48" (3/3) ... [2022-02-16 09:52:48,573 INFO L111 eAbstractionObserver]: Analyzing ICFG 05-end-no-begin.c [2022-02-16 09:52:48,577 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-16 09:52:48,577 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-16 09:52:48,577 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-16 09:52:48,577 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-16 09:52:48,609 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 09:52:48,610 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 09:52:48,610 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 09:52:48,610 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 09:52:48,610 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 09:52:48,610 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 09:52:48,611 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 09:52:48,611 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 09:52:48,611 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 09:52:48,612 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 09:52:48,612 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 09:52:48,612 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 09:52:48,618 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 09:52:48,618 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 09:52:48,618 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 09:52:48,618 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 09:52:48,620 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-16 09:52:48,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-16 09:52:48,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 09:52:48,662 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-16 09:52:48,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-02-16 09:52:48,686 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-16 09:52:48,692 INFO L339 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=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-16 09:52:48,692 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-16 09:52:48,725 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 24 transitions and produced 25 states. [2022-02-16 09:52:48,726 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-02-16 09:52:48,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 09:52:48,730 INFO L85 PathProgramCache]: Analyzing trace with hash -2094865671, now seen corresponding path program 1 times [2022-02-16 09:52:48,735 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 09:52:48,736 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418157847] [2022-02-16 09:52:48,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 09:52:48,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 09:52:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 09:52:48,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 09:52:48,881 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 09:52:48,881 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418157847] [2022-02-16 09:52:48,881 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418157847] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 09:52:48,882 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 09:52:48,882 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-16 09:52:48,883 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829289353] [2022-02-16 09:52:48,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 09:52:48,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-16 09:52:48,888 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 09:52:48,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-16 09:52:48,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-16 09:52:48,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 09:52:48,909 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 09:52:48,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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) [2022-02-16 09:52:48,909 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 09:52:48,948 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 37 transitions and produced 34 states. [2022-02-16 09:52:48,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-16 09:52:48,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-16 09:52:48,949 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-02-16 09:52:48,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 09:52:48,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1174145594, now seen corresponding path program 1 times [2022-02-16 09:52:48,951 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 09:52:48,951 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649612865] [2022-02-16 09:52:48,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 09:52:48,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 09:52:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-16 09:52:48,975 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-16 09:52:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-16 09:52:48,994 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-16 09:52:48,994 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-16 09:52:48,995 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2022-02-16 09:52:48,996 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-02-16 09:52:48,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-16 09:52:49,001 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-16 09:52:49,005 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-16 09:52:49,005 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-16 09:52:49,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 09:52:49 BasicIcfg [2022-02-16 09:52:49,027 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-16 09:52:49,031 INFO L158 Benchmark]: Toolchain (without parser) took 907.64ms. Allocated memory was 191.9MB in the beginning and 242.2MB in the end (delta: 50.3MB). Free memory was 134.4MB in the beginning and 173.6MB in the end (delta: -39.2MB). Peak memory consumption was 11.1MB. Max. memory is 8.0GB. [2022-02-16 09:52:49,031 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 191.9MB. Free memory is still 152.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-16 09:52:49,033 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.42ms. Allocated memory was 191.9MB in the beginning and 242.2MB in the end (delta: 50.3MB). Free memory was 134.2MB in the beginning and 213.9MB in the end (delta: -79.7MB). Peak memory consumption was 6.9MB. Max. memory is 8.0GB. [2022-02-16 09:52:49,033 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.47ms. Allocated memory is still 242.2MB. Free memory was 213.9MB in the beginning and 212.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-16 09:52:49,034 INFO L158 Benchmark]: Boogie Preprocessor took 16.67ms. Allocated memory is still 242.2MB. Free memory was 212.4MB in the beginning and 211.8MB in the end (delta: 622.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-16 09:52:49,035 INFO L158 Benchmark]: RCFGBuilder took 227.48ms. Allocated memory is still 242.2MB. Free memory was 211.3MB in the beginning and 201.9MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-16 09:52:49,036 INFO L158 Benchmark]: TraceAbstraction took 457.88ms. Allocated memory is still 242.2MB. Free memory was 201.4MB in the beginning and 173.6MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2022-02-16 09:52:49,042 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 191.9MB. Free memory is still 152.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 177.42ms. Allocated memory was 191.9MB in the beginning and 242.2MB in the end (delta: 50.3MB). Free memory was 134.2MB in the beginning and 213.9MB in the end (delta: -79.7MB). Peak memory consumption was 6.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.47ms. Allocated memory is still 242.2MB. Free memory was 213.9MB in the beginning and 212.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.67ms. Allocated memory is still 242.2MB. Free memory was 212.4MB in the beginning and 211.8MB in the end (delta: 622.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 227.48ms. Allocated memory is still 242.2MB. Free memory was 211.3MB in the beginning and 201.9MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 457.88ms. Allocated memory is still 242.2MB. Free memory was 201.4MB in the beginning and 173.6MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative 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, Eliminated conditions: 0, Maximal queried relation: -1, Independence queries for same thread: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 30]: assertion can be violated assertion can be violated We found a FailurePath: [L15] 0 int x = 0; VAL [x=0] [L23] 0 pthread_t threadId; VAL [threadId={2:0}, x=0] [L24] FCALL, FORK 0 pthread_create(&threadId, NULL, &foo, NULL) VAL [arg={0:0}, pthread_create(&threadId, NULL, &foo, NULL)=-1, threadId={2:0}, x=0] [L26] 0 x = 1 VAL [arg={0:0}, threadId={2:0}, x=1] [L18] 1 x = 2 VAL [arg={0:0}, arg={0:0}, x=2] [L27] 0 x = x + 1 VAL [arg={0:0}, arg={0:0}, threadId={2:0}, x=3] [L30] 0 CodeAnnotStmt[Assertion] VAL [arg={0:0}, arg={0:0}, threadId={2:0}, x=3] - UnprovableResult [Line: 24]: 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 3 procedures, 37 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 4, 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 22 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! [2022-02-16 09:52:49,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2022-02-16 09:52:49,282 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...