/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-POR-NewStatesSleep-NoLbe.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 [2022-02-15 19:00:57,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 19:00:57,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 19:00:57,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 19:00:57,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-15 19:00:57,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-15 19:00:57,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-15 19:00:57,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-15 19:00:57,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-15 19:00:57,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-15 19:00:57,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-15 19:00:57,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-15 19:00:57,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-15 19:00:57,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-15 19:00:57,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-15 19:00:57,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-15 19:00:57,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-15 19:00:57,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 19:00:57,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 19:00:57,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 19:00:57,695 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-POR-NewStatesSleep-NoLbe.epf [2022-02-15 19:00:57,724 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 19:00:57,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 19:00:57,725 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-15 19:00:57,725 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-15 19:00:57,726 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-15 19:00:57,726 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-15 19:00:57,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-15 19:00:57,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-15 19:00:57,726 INFO L138 SettingsManager]: * Use SBE=true [2022-02-15 19:00:57,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 19:00:57,727 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 19:00:57,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 19:00:57,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 19:00:57,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 19:00:57,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 19:00:57,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 19:00:57,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 19:00:57,728 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 19:00:57,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 19:00:57,728 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 19:00:57,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 19:00:57,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 19:00:57,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 19:00:57,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 19:00:57,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 19:00:57,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 19:00:57,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 19:00:57,729 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-15 19:00:57,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-15 19:00:57,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-15 19:00:57,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-15 19:00:57,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-15 19:00:57,730 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-15 19:00:57,730 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-15 19:00:57,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 19:00:57,730 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-02-15 19:00:57,730 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-15 19:00:57,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 19:00:57,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 19:00:57,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 19:00:57,931 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 19:00:57,932 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 19:00:57,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/05-end-no-begin.c [2022-02-15 19:00:57,986 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35c08af27/8dc243009a5c41eda1e57ddac651e801/FLAG824753bda [2022-02-15 19:00:58,276 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 19:00:58,277 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/05-end-no-begin.c [2022-02-15 19:00:58,277 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2022-02-15 19:00:58,308 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35c08af27/8dc243009a5c41eda1e57ddac651e801/FLAG824753bda [2022-02-15 19:00:58,713 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35c08af27/8dc243009a5c41eda1e57ddac651e801 [2022-02-15 19:00:58,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 19:00:58,719 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-15 19:00:58,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 19:00:58,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 19:00:58,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 19:00:58,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 07:00:58" (1/1) ... [2022-02-15 19:00:58,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eff314c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:00:58, skipping insertion in model container [2022-02-15 19:00:58,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 07:00:58" (1/1) ... [2022-02-15 19:00:58,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 19:00:58,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 19:00:58,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 19:00:58,858 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 19:00:58,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 19:00:58,873 INFO L208 MainTranslator]: Completed translation [2022-02-15 19:00:58,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:00:58 WrapperNode [2022-02-15 19:00:58,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 19:00:58,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-15 19:00:58,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-15 19:00:58,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-15 19:00:58,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:00:58" (1/1) ... [2022-02-15 19:00:58,883 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:00:58" (1/1) ... [2022-02-15 19:00:58,894 INFO L137 Inliner]: procedures = 10, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-02-15 19:00:58,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-15 19:00:58,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 19:00:58,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 19:00:58,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 19:00:58,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:00:58" (1/1) ... [2022-02-15 19:00:58,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:00:58" (1/1) ... [2022-02-15 19:00:58,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:00:58" (1/1) ... [2022-02-15 19:00:58,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:00:58" (1/1) ... [2022-02-15 19:00:58,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:00:58" (1/1) ... [2022-02-15 19:00:58,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:00:58" (1/1) ... [2022-02-15 19:00:58,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:00:58" (1/1) ... [2022-02-15 19:00:58,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 19:00:58,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 19:00:58,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 19:00:58,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 19:00:58,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:00:58" (1/1) ... [2022-02-15 19:00:58,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 19:00:58,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 19:00:58,940 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) [2022-02-15 19:00:58,956 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 [2022-02-15 19:00:58,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 19:00:58,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-15 19:00:58,975 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-02-15 19:00:58,975 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-02-15 19:00:58,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 19:00:58,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 19:00:58,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-15 19:00:58,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 19:00:58,979 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-15 19:00:59,027 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 19:00:59,028 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 19:00:59,150 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 19:00:59,154 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 19:00:59,154 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-15 19:00:59,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 07:00:59 BoogieIcfgContainer [2022-02-15 19:00:59,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 19:00:59,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 19:00:59,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 19:00:59,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 19:00:59,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 07:00:58" (1/3) ... [2022-02-15 19:00:59,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a45a347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 07:00:59, skipping insertion in model container [2022-02-15 19:00:59,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:00:58" (2/3) ... [2022-02-15 19:00:59,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a45a347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 07:00:59, skipping insertion in model container [2022-02-15 19:00:59,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 07:00:59" (3/3) ... [2022-02-15 19:00:59,160 INFO L111 eAbstractionObserver]: Analyzing ICFG 05-end-no-begin.c [2022-02-15 19:00:59,164 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-15 19:00:59,164 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-15 19:00:59,164 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 19:00:59,164 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-15 19:00:59,196 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 19:00:59,196 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 19:00:59,197 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 19:00:59,197 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 19:00:59,197 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 19:00:59,197 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 19:00:59,197 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 19:00:59,197 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 19:00:59,198 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 19:00:59,198 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 19:00:59,198 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 19:00:59,198 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 19:00:59,201 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 19:00:59,201 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 19:00:59,201 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 19:00:59,201 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 19:00:59,202 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-15 19:00:59,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-15 19:00:59,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 19:00:59,245 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) [2022-02-15 19:00:59,246 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 [2022-02-15 19:00:59,276 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 19:00:59,282 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 [2022-02-15 19:00:59,282 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-15 19:00:59,324 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-02-15 19:00:59,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 19:00:59,328 INFO L85 PathProgramCache]: Analyzing trace with hash -2094865671, now seen corresponding path program 1 times [2022-02-15 19:00:59,334 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 19:00:59,335 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977136720] [2022-02-15 19:00:59,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 19:00:59,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 19:00:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 19:00:59,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 19:00:59,510 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 19:00:59,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977136720] [2022-02-15 19:00:59,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977136720] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 19:00:59,512 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 19:00:59,512 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-15 19:00:59,520 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775081386] [2022-02-15 19:00:59,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 19:00:59,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 19:00:59,530 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 19:00:59,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 19:00:59,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-15 19:00:59,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-15 19:00:59,553 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-15 19:00:59,554 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) [2022-02-15 19:00:59,554 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-15 19:00:59,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 19:00:59,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 19:00:59,642 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-02-15 19:00:59,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 19:00:59,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1174145594, now seen corresponding path program 1 times [2022-02-15 19:00:59,645 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 19:00:59,646 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418157641] [2022-02-15 19:00:59,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 19:00:59,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 19:00:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-15 19:00:59,668 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-15 19:00:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-15 19:00:59,692 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-15 19:00:59,693 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-15 19:00:59,694 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2022-02-15 19:00:59,695 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-02-15 19:00:59,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 19:00:59,700 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-15 19:00:59,704 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-15 19:00:59,704 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-15 19:00:59,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 07:00:59 BasicIcfg [2022-02-15 19:00:59,726 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-15 19:00:59,730 INFO L158 Benchmark]: Toolchain (without parser) took 1008.19ms. Allocated memory was 191.9MB in the beginning and 242.2MB in the end (delta: 50.3MB). Free memory was 136.0MB in the beginning and 174.2MB in the end (delta: -38.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-02-15 19:00:59,731 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 191.9MB. Free memory is still 154.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 19:00:59,732 INFO L158 Benchmark]: CACSL2BoogieTranslator took 153.86ms. Allocated memory was 191.9MB in the beginning and 242.2MB in the end (delta: 50.3MB). Free memory was 135.8MB in the beginning and 215.1MB in the end (delta: -79.3MB). Peak memory consumption was 7.0MB. Max. memory is 8.0GB. [2022-02-15 19:00:59,733 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.27ms. Allocated memory is still 242.2MB. Free memory was 215.1MB in the beginning and 213.7MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-15 19:00:59,733 INFO L158 Benchmark]: Boogie Preprocessor took 18.28ms. Allocated memory is still 242.2MB. Free memory was 213.7MB in the beginning and 213.1MB in the end (delta: 591.5kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-15 19:00:59,735 INFO L158 Benchmark]: RCFGBuilder took 239.73ms. Allocated memory is still 242.2MB. Free memory was 212.7MB in the beginning and 202.7MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-15 19:00:59,735 INFO L158 Benchmark]: TraceAbstraction took 570.10ms. Allocated memory is still 242.2MB. Free memory was 202.2MB in the beginning and 174.2MB in the end (delta: 27.9MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2022-02-15 19:00:59,741 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 191.9MB. Free memory is still 154.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 153.86ms. Allocated memory was 191.9MB in the beginning and 242.2MB in the end (delta: 50.3MB). Free memory was 135.8MB in the beginning and 215.1MB in the end (delta: -79.3MB). Peak memory consumption was 7.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.27ms. Allocated memory is still 242.2MB. Free memory was 215.1MB in the beginning and 213.7MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.28ms. Allocated memory is still 242.2MB. Free memory was 213.7MB in the beginning and 213.1MB in the end (delta: 591.5kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 239.73ms. Allocated memory is still 242.2MB. Free memory was 212.7MB in the beginning and 202.7MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 570.10ms. Allocated memory is still 242.2MB. Free memory was 202.2MB in the beginning and 174.2MB in the end (delta: 27.9MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 19, positive: 18, positive conditional: 18, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 19, positive: 18, positive conditional: 18, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 19, positive: 18, positive conditional: 18, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 20, positive: 18, positive conditional: 12, positive unconditional: 6, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 20, positive: 18, positive conditional: 9, positive unconditional: 9, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 20, positive: 18, positive conditional: 9, positive unconditional: 9, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 15, positive: 13, positive conditional: 7, positive unconditional: 6, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 15, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 41, positive: 27, positive conditional: 27, positive unconditional: 0, negative: 14, negative conditional: 8, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 20, positive: 5, positive conditional: 2, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 15, unknown conditional: 8, unknown unconditional: 7] , Statistics on independence cache: Total cache size (in pairs): 15, Positive cache size: 13, Positive conditional cache size: 7, Positive unconditional cache size: 6, Negative cache size: 2, Negative conditional cache size: 1, Negative unconditional cache size: 1, Eliminated conditions: 3, 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: 0.5s, 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! [2022-02-15 19:00:59,771 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 [2022-02-15 19:00:59,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...