/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-MCRwithoutDepranks-Lazy.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/predecessorInAtomicBlockBug.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-17 02:42:11,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-17 02:42:11,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-17 02:42:11,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-17 02:42:11,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-17 02:42:11,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-17 02:42:11,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-17 02:42:11,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-17 02:42:11,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-17 02:42:11,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-17 02:42:11,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-17 02:42:11,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-17 02:42:11,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-17 02:42:11,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-17 02:42:11,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-17 02:42:11,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-17 02:42:11,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-17 02:42:11,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-17 02:42:11,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-17 02:42:11,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-17 02:42:11,546 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-MCRwithoutDepranks-Lazy.epf [2022-02-17 02:42:11,584 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-17 02:42:11,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-17 02:42:11,585 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-17 02:42:11,585 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-17 02:42:11,586 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-17 02:42:11,586 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-17 02:42:11,586 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-17 02:42:11,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-17 02:42:11,587 INFO L138 SettingsManager]: * Use SBE=true [2022-02-17 02:42:11,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-17 02:42:11,588 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-17 02:42:11,588 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-17 02:42:11,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-17 02:42:11,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-17 02:42:11,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-17 02:42:11,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-17 02:42:11,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-17 02:42:11,589 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-17 02:42:11,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-17 02:42:11,589 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-17 02:42:11,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-17 02:42:11,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-17 02:42:11,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-17 02:42:11,589 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-17 02:42:11,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-17 02:42:11,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-17 02:42:11,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-17 02:42:11,590 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-17 02:42:11,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-17 02:42:11,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-17 02:42:11,590 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-17 02:42:11,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-17 02:42:11,591 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-17 02:42:11,591 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-17 02:42:11,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-17 02:42:11,591 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-02-17 02:42:11,591 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-17 02:42:11,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-17 02:42:11,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-17 02:42:11,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-17 02:42:11,868 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-17 02:42:11,870 INFO L275 PluginConnector]: CDTParser initialized [2022-02-17 02:42:11,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/predecessorInAtomicBlockBug.c [2022-02-17 02:42:11,964 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df8dfbcb6/c5a4b9a3d7a440b4af1a1728ccf1d287/FLAGab3dd3309 [2022-02-17 02:42:12,419 INFO L306 CDTParser]: Found 1 translation units. [2022-02-17 02:42:12,420 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/predecessorInAtomicBlockBug.c [2022-02-17 02:42:12,420 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2022-02-17 02:42:12,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df8dfbcb6/c5a4b9a3d7a440b4af1a1728ccf1d287/FLAGab3dd3309 [2022-02-17 02:42:12,823 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df8dfbcb6/c5a4b9a3d7a440b4af1a1728ccf1d287 [2022-02-17 02:42:12,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-17 02:42:12,828 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-17 02:42:12,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-17 02:42:12,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-17 02:42:12,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-17 02:42:12,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 02:42:12" (1/1) ... [2022-02-17 02:42:12,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7801a753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:42:12, skipping insertion in model container [2022-02-17 02:42:12,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 02:42:12" (1/1) ... [2022-02-17 02:42:12,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-17 02:42:12,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-17 02:42:12,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-17 02:42:13,004 INFO L203 MainTranslator]: Completed pre-run [2022-02-17 02:42:13,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-17 02:42:13,022 INFO L208 MainTranslator]: Completed translation [2022-02-17 02:42:13,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:42:13 WrapperNode [2022-02-17 02:42:13,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-17 02:42:13,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-17 02:42:13,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-17 02:42:13,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-17 02:42:13,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:42:13" (1/1) ... [2022-02-17 02:42:13,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:42:13" (1/1) ... [2022-02-17 02:42:13,060 INFO L137 Inliner]: procedures = 10, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-02-17 02:42:13,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-17 02:42:13,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-17 02:42:13,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-17 02:42:13,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-17 02:42:13,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:42:13" (1/1) ... [2022-02-17 02:42:13,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:42:13" (1/1) ... [2022-02-17 02:42:13,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:42:13" (1/1) ... [2022-02-17 02:42:13,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:42:13" (1/1) ... [2022-02-17 02:42:13,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:42:13" (1/1) ... [2022-02-17 02:42:13,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:42:13" (1/1) ... [2022-02-17 02:42:13,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:42:13" (1/1) ... [2022-02-17 02:42:13,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-17 02:42:13,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-17 02:42:13,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-17 02:42:13,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-17 02:42:13,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:42:13" (1/1) ... [2022-02-17 02:42:13,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-17 02:42:13,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-17 02:42:13,134 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) [2022-02-17 02:42:13,157 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 [2022-02-17 02:42:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-17 02:42:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-17 02:42:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-17 02:42:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-02-17 02:42:13,189 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-02-17 02:42:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-17 02:42:13,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-17 02:42:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-17 02:42:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-17 02:42:13,191 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-17 02:42:13,256 INFO L234 CfgBuilder]: Building ICFG [2022-02-17 02:42:13,258 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-17 02:42:13,378 INFO L275 CfgBuilder]: Performing block encoding [2022-02-17 02:42:13,382 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-17 02:42:13,382 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-17 02:42:13,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 02:42:13 BoogieIcfgContainer [2022-02-17 02:42:13,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-17 02:42:13,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-17 02:42:13,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-17 02:42:13,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-17 02:42:13,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 02:42:12" (1/3) ... [2022-02-17 02:42:13,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75af1664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 02:42:13, skipping insertion in model container [2022-02-17 02:42:13,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:42:13" (2/3) ... [2022-02-17 02:42:13,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75af1664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 02:42:13, skipping insertion in model container [2022-02-17 02:42:13,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 02:42:13" (3/3) ... [2022-02-17 02:42:13,404 INFO L111 eAbstractionObserver]: Analyzing ICFG predecessorInAtomicBlockBug.c [2022-02-17 02:42:13,407 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-17 02:42:13,407 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-17 02:42:13,408 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-17 02:42:13,408 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-17 02:42:13,438 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:42:13,439 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:42:13,439 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:42:13,439 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:42:13,439 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:42:13,439 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:42:13,440 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:42:13,440 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:42:13,440 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:42:13,440 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:42:13,440 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:42:13,440 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:42:13,443 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:42:13,443 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:42:13,443 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:42:13,443 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:42:13,444 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-17 02:42:13,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-17 02:42:13,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-17 02:42:13,516 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) [2022-02-17 02:42:13,517 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 [2022-02-17 02:42:13,543 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-17 02:42:13,549 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 [2022-02-17 02:42:13,550 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-17 02:42:13,612 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 34 transitions and produced 35 states. [2022-02-17 02:42:13,615 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting fooErr0ASSERT_VIOLATIONASSERT === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT] === [2022-02-17 02:42:13,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-17 02:42:13,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1224766481, now seen corresponding path program 1 times [2022-02-17 02:42:13,627 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-17 02:42:13,628 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265626467] [2022-02-17 02:42:13,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-17 02:42:13,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-17 02:42:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-17 02:42:13,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-17 02:42:13,828 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-17 02:42:13,828 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265626467] [2022-02-17 02:42:13,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265626467] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-17 02:42:13,829 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-17 02:42:13,829 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-17 02:42:13,830 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473494575] [2022-02-17 02:42:13,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-17 02:42:13,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-17 02:42:13,835 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-17 02:42:13,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-17 02:42:13,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-17 02:42:13,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-17 02:42:13,852 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-17 02:42:13,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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) [2022-02-17 02:42:13,853 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-17 02:42:13,979 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 82 transitions and produced 83 states. [2022-02-17 02:42:13,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-17 02:42:13,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-17 02:42:13,981 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting fooErr0ASSERT_VIOLATIONASSERT === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT] === [2022-02-17 02:42:13,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-17 02:42:13,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1933211376, now seen corresponding path program 1 times [2022-02-17 02:42:13,984 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-17 02:42:13,984 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972101810] [2022-02-17 02:42:13,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-17 02:42:13,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-17 02:42:13,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-17 02:42:13,998 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-17 02:42:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-17 02:42:14,027 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-17 02:42:14,043 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-17 02:42:14,046 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location fooErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-02-17 02:42:14,047 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0ASSERT_VIOLATIONASSERT (1 of 3 remaining) [2022-02-17 02:42:14,048 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 3 remaining) [2022-02-17 02:42:14,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-17 02:42:14,054 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-17 02:42:14,059 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-17 02:42:14,059 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-17 02:42:14,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 02:42:14 BasicIcfg [2022-02-17 02:42:14,092 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-17 02:42:14,093 INFO L158 Benchmark]: Toolchain (without parser) took 1264.58ms. Allocated memory is still 174.1MB. Free memory was 121.7MB in the beginning and 81.7MB in the end (delta: 40.0MB). Peak memory consumption was 39.6MB. Max. memory is 8.0GB. [2022-02-17 02:42:14,094 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 174.1MB. Free memory is still 139.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-17 02:42:14,096 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.52ms. Allocated memory is still 174.1MB. Free memory was 121.4MB in the beginning and 149.3MB in the end (delta: -27.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-17 02:42:14,097 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.83ms. Allocated memory is still 174.1MB. Free memory was 149.3MB in the beginning and 147.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-17 02:42:14,097 INFO L158 Benchmark]: Boogie Preprocessor took 42.04ms. Allocated memory is still 174.1MB. Free memory was 147.7MB in the beginning and 147.2MB in the end (delta: 522.2kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-17 02:42:14,098 INFO L158 Benchmark]: RCFGBuilder took 279.57ms. Allocated memory is still 174.1MB. Free memory was 147.2MB in the beginning and 137.8MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-17 02:42:14,100 INFO L158 Benchmark]: TraceAbstraction took 706.93ms. Allocated memory is still 174.1MB. Free memory was 137.2MB in the beginning and 81.7MB in the end (delta: 55.6MB). Peak memory consumption was 55.6MB. Max. memory is 8.0GB. [2022-02-17 02:42:14,105 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 174.1MB. Free memory is still 139.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 193.52ms. Allocated memory is still 174.1MB. Free memory was 121.4MB in the beginning and 149.3MB in the end (delta: -27.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.83ms. Allocated memory is still 174.1MB. Free memory was 149.3MB in the beginning and 147.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.04ms. Allocated memory is still 174.1MB. Free memory was 147.7MB in the beginning and 147.2MB in the end (delta: 522.2kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 279.57ms. Allocated memory is still 174.1MB. Free memory was 147.2MB in the beginning and 137.8MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 706.93ms. Allocated memory is still 174.1MB. Free memory was 137.2MB in the beginning and 81.7MB in the end (delta: 55.6MB). Peak memory consumption was 55.6MB. 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: 19]: assertion can be violated assertion can be violated We found a FailurePath: [L16] 0 int x = 0; VAL [x=0] [L24] 0 pthread_t threadId; VAL [threadId={2:0}, x=0] [L25] 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] [L27] 0 x = x - 1 VAL [arg={0:0}, threadId={2:0}, x=-1] [L19] 1 CodeAnnotStmt[Assertion] VAL [arg={0:0}, arg={0:0}, x=-1] - UnprovableResult [Line: 25]: 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, 3 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: 0.2s, 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, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 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! [2022-02-17 02:42:14,142 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 [2022-02-17 02:42:14,361 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...