/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-Sleep-NoLbe-New_States.epf -i ../../../trunk/examples/concurrent/pthreads/predecessorInAtomicBlockBug.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-22 10:17:55,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-22 10:17:55,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-22 10:17:55,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-22 10:17:55,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-22 10:17:55,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-22 10:17:55,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-22 10:17:55,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-22 10:17:55,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-22 10:17:55,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-22 10:17:55,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-22 10:17:55,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-22 10:17:55,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-22 10:17:55,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-22 10:17:55,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-22 10:17:55,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-22 10:17:55,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-22 10:17:55,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-22 10:17:55,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-22 10:17:55,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-22 10:17:55,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-22 10:17:55,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-22 10:17:55,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-22 10:17:55,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-22 10:17:55,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-22 10:17:55,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-22 10:17:55,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-22 10:17:55,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-22 10:17:55,540 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-Sleep-NoLbe-New_States.epf [2021-01-22 10:17:55,598 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-22 10:17:55,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-22 10:17:55,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-22 10:17:55,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-22 10:17:55,603 INFO L138 SettingsManager]: * Use SBE=true [2021-01-22 10:17:55,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-22 10:17:55,603 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-22 10:17:55,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-22 10:17:55,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-22 10:17:55,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-22 10:17:55,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-22 10:17:55,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-22 10:17:55,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-22 10:17:55,606 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-22 10:17:55,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-22 10:17:55,606 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-22 10:17:55,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-22 10:17:55,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-22 10:17:55,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-22 10:17:55,607 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-22 10:17:55,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-22 10:17:55,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-22 10:17:55,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-22 10:17:55,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-22 10:17:55,608 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-22 10:17:55,608 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-22 10:17:55,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-22 10:17:55,609 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-22 10:17:55,609 INFO L138 SettingsManager]: * Lazy Petri-NFA conversion=true [2021-01-22 10:17:55,609 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=SLEEP_SET_FA [2021-01-22 10:17:55,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-22 10:17:55,610 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-22 10:17:55,610 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-01-22 10:17:55,610 INFO L138 SettingsManager]: * Sleep set reduction in concurrent analysis=NEW_STATES 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-22 10:17:56,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-22 10:17:56,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-22 10:17:56,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-22 10:17:56,086 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-22 10:17:56,087 INFO L275 PluginConnector]: CDTParser initialized [2021-01-22 10:17:56,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/predecessorInAtomicBlockBug.c [2021-01-22 10:17:56,180 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/929fabac5/c4526a22f208485aad2679657320e33f/FLAG696cf9916 [2021-01-22 10:17:56,818 INFO L306 CDTParser]: Found 1 translation units. [2021-01-22 10:17:56,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/predecessorInAtomicBlockBug.c [2021-01-22 10:17:56,819 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-01-22 10:17:56,864 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/929fabac5/c4526a22f208485aad2679657320e33f/FLAG696cf9916 [2021-01-22 10:17:57,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/929fabac5/c4526a22f208485aad2679657320e33f [2021-01-22 10:17:57,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-22 10:17:57,173 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-22 10:17:57,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-22 10:17:57,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-22 10:17:57,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-22 10:17:57,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.01 10:17:57" (1/1) ... [2021-01-22 10:17:57,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@783e8881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.01 10:17:57, skipping insertion in model container [2021-01-22 10:17:57,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.01 10:17:57" (1/1) ... [2021-01-22 10:17:57,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-22 10:17:57,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-22 10:17:57,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-22 10:17:57,387 INFO L203 MainTranslator]: Completed pre-run [2021-01-22 10:17:57,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-22 10:17:57,416 INFO L208 MainTranslator]: Completed translation [2021-01-22 10:17:57,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.01 10:17:57 WrapperNode [2021-01-22 10:17:57,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-22 10:17:57,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-22 10:17:57,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-22 10:17:57,419 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-22 10:17:57,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.01 10:17:57" (1/1) ... [2021-01-22 10:17:57,436 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.01 10:17:57" (1/1) ... [2021-01-22 10:17:57,457 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-22 10:17:57,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-22 10:17:57,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-22 10:17:57,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-22 10:17:57,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.01 10:17:57" (1/1) ... [2021-01-22 10:17:57,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.01 10:17:57" (1/1) ... [2021-01-22 10:17:57,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.01 10:17:57" (1/1) ... [2021-01-22 10:17:57,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.01 10:17:57" (1/1) ... [2021-01-22 10:17:57,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.01 10:17:57" (1/1) ... [2021-01-22 10:17:57,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.01 10:17:57" (1/1) ... [2021-01-22 10:17:57,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.01 10:17:57" (1/1) ... [2021-01-22 10:17:57,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-22 10:17:57,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-22 10:17:57,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-22 10:17:57,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-22 10:17:57,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.01 10:17:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-22 10:17:57,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-22 10:17:57,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-22 10:17:57,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-22 10:17:57,576 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-01-22 10:17:57,578 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-01-22 10:17:57,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-22 10:17:57,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-22 10:17:57,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-22 10:17:57,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-22 10:17:57,581 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-22 10:17:57,988 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-22 10:17:57,988 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2021-01-22 10:17:57,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.01 10:17:57 BoogieIcfgContainer [2021-01-22 10:17:57,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-22 10:17:57,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-22 10:17:57,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-22 10:17:57,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-22 10:17:57,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.01 10:17:57" (1/3) ... [2021-01-22 10:17:57,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eda33de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.01 10:17:57, skipping insertion in model container [2021-01-22 10:17:57,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.01 10:17:57" (2/3) ... [2021-01-22 10:17:57,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eda33de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.01 10:17:57, skipping insertion in model container [2021-01-22 10:17:57,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.01 10:17:57" (3/3) ... [2021-01-22 10:17:58,001 INFO L111 eAbstractionObserver]: Analyzing ICFG predecessorInAtomicBlockBug.c [2021-01-22 10:17:58,019 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-22 10:17:58,020 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-22 10:17:58,023 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-22 10:17:58,024 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-22 10:17:58,077 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-22 10:17:58,079 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-22 10:17:58,080 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-22 10:17:58,080 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-22 10:17:58,081 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-22 10:17:58,081 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-22 10:17:58,081 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-22 10:17:58,081 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-22 10:17:58,082 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-22 10:17:58,084 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-22 10:17:58,084 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-22 10:17:58,084 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-22 10:17:58,087 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-22 10:17:58,088 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-22 10:17:58,088 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-22 10:17:58,088 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-22 10:17:58,104 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-22 10:17:58,118 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-01-22 10:17:58,154 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-22 10:17:58,154 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-22 10:17:58,154 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-22 10:17:58,155 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-22 10:17:58,155 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-22 10:17:58,155 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-22 10:17:58,155 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-22 10:17:58,155 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-22 10:17:58,208 INFO L163 IndependenceRelation]: Independence Inclusion Check Time: 13ms [2021-01-22 10:17:58,216 INFO L163 IndependenceRelation]: Independence Inclusion Check Time: 6ms [2021-01-22 10:17:58,223 INFO L163 IndependenceRelation]: Independence Inclusion Check Time: 5ms [2021-01-22 10:17:58,230 INFO L163 IndependenceRelation]: Independence Inclusion Check Time: 5ms [2021-01-22 10:17:58,243 INFO L163 IndependenceRelation]: Independence Inclusion Check Time: 6ms [2021-01-22 10:17:58,251 INFO L163 IndependenceRelation]: Independence Inclusion Check Time: 5ms [2021-01-22 10:17:58,258 INFO L163 IndependenceRelation]: Independence Inclusion Check Time: 5ms [2021-01-22 10:17:58,266 INFO L163 IndependenceRelation]: Independence Inclusion Check Time: 5ms [2021-01-22 10:17:58,272 WARN L465 BasicCegarLoop]: Sleep Set Reduction Time: 94ms [2021-01-22 10:17:58,272 WARN L466 BasicCegarLoop]: Sleep set: input automaton currently 57 states, but on-demand construction may add more states [2021-01-22 10:17:58,275 WARN L467 BasicCegarLoop]: Sleep set: output automaton has 57 states, 49 states have (on average 1.3061224489795917) internal successors, (64), 56 states have internal predecessors, (64), 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) Size of Word is: 12 and size of Sequence is : 13[2021-01-22 10:17:58,285 INFO L131 SleepSetCegar]: Size of mCounterexample is: 13 [2021-01-22 10:17:58,285 INFO L132 SleepSetCegar]: [31#[ULTIMATE.startENTRY]don't care, 34#[L-1]don't care, 37#[L-1-1]don't care, 40#[L16]don't care, 43#[L-1-2]don't care, 46#[L-1-3]don't care, 49#[L24]don't care, 52#[L24-1]don't care, 55#[L25]don't care, 58#[L25-1, fooENTRY]don't care, 61#[L27, fooENTRY]don't care, 69#[L27, L19]don't care, 75#[fooErr0ASSERT_VIOLATIONASSERT, L27]don't care] [2021-01-22 10:17:58,286 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-22 10:17:58,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-22 10:17:58,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1436107214, now seen corresponding path program 1 times [2021-01-22 10:17:58,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-22 10:17:58,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009332753] [2021-01-22 10:17:58,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-22 10:17:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-22 10:17:58,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-22 10:17:58,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009332753] [2021-01-22 10:17:58,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-22 10:17:58,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-22 10:17:58,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811668230] [2021-01-22 10:17:58,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-22 10:17:58,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-22 10:17:58,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-22 10:17:58,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-22 10:17:58,495 INFO L481 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-01-22 10:17:58,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-01-22 10:17:58,511 WARN L141 IndependenceRelation]: Requesting ManagedScript unlock before implication check [2021-01-22 10:17:58,512 WARN L144 IndependenceRelation]: Script Release Time: 1ms [2021-01-22 10:17:58,521 INFO L163 IndependenceRelation]: Independence Inclusion Check Time: 8ms [2021-01-22 10:17:58,529 INFO L163 IndependenceRelation]: Independence Inclusion Check Time: 6ms [2021-01-22 10:17:58,537 INFO L163 IndependenceRelation]: Independence Inclusion Check Time: 6ms [2021-01-22 10:17:58,546 INFO L163 IndependenceRelation]: Independence Inclusion Check Time: 7ms [2021-01-22 10:17:58,556 INFO L163 IndependenceRelation]: Independence Inclusion Check Time: 7ms [2021-01-22 10:17:58,563 INFO L163 IndependenceRelation]: Independence Inclusion Check Time: 6ms [2021-01-22 10:17:58,573 INFO L163 IndependenceRelation]: Independence Inclusion Check Time: 7ms [2021-01-22 10:17:58,580 INFO L163 IndependenceRelation]: Independence Inclusion Check Time: 6ms [2021-01-22 10:17:58,589 INFO L163 IndependenceRelation]: Independence Inclusion Check Time: 7ms [2021-01-22 10:17:58,597 INFO L163 IndependenceRelation]: Independence Inclusion Check Time: 5ms Size of Word is: 13 and size of Sequence is : 14[2021-01-22 10:17:58,609 INFO L131 SleepSetCegar]: Size of mCounterexample is: 14 [2021-01-22 10:17:58,610 INFO L132 SleepSetCegar]: [222#[ULTIMATE.startENTRY]true, 224#[L-1]true, 226#[L-1-1]true, 228#[L16]true, 230#[L-1-2](= ~x~0 0), 232#[L-1-3](= ~x~0 0), 234#[L24](= ~x~0 0), 236#[L24-1](= ~x~0 0), 238#[L25](= ~x~0 0), 240#[L25-1, fooENTRY](= ~x~0 0), 242#[L27, fooENTRY](= ~x~0 0), 247#[L27, L19](= ~x~0 0), 250#[L28, L19]true, 309#[fooErr0ASSERT_VIOLATIONASSERT, L28]true] [2021-01-22 10:17:58,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-22 10:17:58,610 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-22 10:17:58,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-22 10:17:58,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1569650099, now seen corresponding path program 1 times [2021-01-22 10:17:58,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-22 10:17:58,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705980270] [2021-01-22 10:17:58,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-22 10:17:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-22 10:17:58,629 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-22 10:17:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-22 10:17:58,641 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-22 10:17:58,662 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-22 10:17:58,662 INFO L605 BasicCegarLoop]: Counterexample might be feasible [2021-01-22 10:17:58,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-22 10:17:58,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.01 10:17:58 BasicIcfg [2021-01-22 10:17:58,687 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-22 10:17:58,690 INFO L168 Benchmark]: Toolchain (without parser) took 1516.83 ms. Allocated memory is still 302.0 MB. Free memory was 275.2 MB in the beginning and 251.2 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.5 MB. Max. memory is 16.0 GB. [2021-01-22 10:17:58,691 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 302.0 MB. Free memory was 270.0 MB in the beginning and 269.8 MB in the end (delta: 154.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-22 10:17:58,692 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.27 ms. Allocated memory is still 302.0 MB. Free memory was 275.0 MB in the beginning and 265.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-01-22 10:17:58,693 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.27 ms. Allocated memory is still 302.0 MB. Free memory was 265.8 MB in the beginning and 264.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-22 10:17:58,694 INFO L168 Benchmark]: Boogie Preprocessor took 22.28 ms. Allocated memory is still 302.0 MB. Free memory was 264.5 MB in the beginning and 263.6 MB in the end (delta: 965.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-22 10:17:58,695 INFO L168 Benchmark]: RCFGBuilder took 509.24 ms. Allocated memory is still 302.0 MB. Free memory was 263.6 MB in the beginning and 282.6 MB in the end (delta: -19.1 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.0 GB. [2021-01-22 10:17:58,696 INFO L168 Benchmark]: TraceAbstraction took 694.93 ms. Allocated memory is still 302.0 MB. Free memory was 282.6 MB in the beginning and 251.2 MB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2021-01-22 10:17:58,700 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 302.0 MB. Free memory was 270.0 MB in the beginning and 269.8 MB in the end (delta: 154.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 237.27 ms. Allocated memory is still 302.0 MB. Free memory was 275.0 MB in the beginning and 265.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 39.27 ms. Allocated memory is still 302.0 MB. Free memory was 265.8 MB in the beginning and 264.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 22.28 ms. Allocated memory is still 302.0 MB. Free memory was 264.5 MB in the beginning and 263.6 MB in the end (delta: 965.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 509.24 ms. Allocated memory is still 302.0 MB. Free memory was 263.6 MB in the beginning and 282.6 MB in the end (delta: -19.1 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 694.93 ms. Allocated memory is still 302.0 MB. Free memory was 282.6 MB in the beginning and 251.2 MB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 [x=0] [L25] FCALL, FORK 0 pthread_create(&threadId, NULL, & foo, NULL) VAL [arg={0:0}, x=0] [L27] 0 x = x - 1 VAL [arg={0:0}, arg={0:0}, x=-1] [L19] 1 CodeAnnotStmt[Assertion] VAL [arg={0:0}, arg={0:0}, x=-1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=0, 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, 0.0s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 297 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! Received shutdown request...