/usr/bin/java -Xmx16000000000 -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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/predecessorInAtomicBlockBug.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-21 19:48:46,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 19:48:46,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 19:48:46,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-21 19:48:46,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-21 19:48:46,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-21 19:48:46,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-21 19:48:46,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-21 19:48:46,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-21 19:48:46,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-21 19:48:46,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-21 19:48:46,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-21 19:48:46,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-21 19:48:46,619 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-21 19:48:46,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-21 19:48:46,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-21 19:48:46,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-21 19:48:46,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-21 19:48:46,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-21 19:48:46,625 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-21 19:48:46,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-21 19:48:46,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-21 19:48:46,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-21 19:48:46,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-21 19:48:46,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-21 19:48:46,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-21 19:48:46,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-21 19:48:46,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-21 19:48:46,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-21 19:48:46,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-21 19:48:46,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-21 19:48:46,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-21 19:48:46,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-21 19:48:46,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-21 19:48:46,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-21 19:48:46,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-21 19:48:46,641 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-FA-NoLbe.epf [2021-05-21 19:48:46,670 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 19:48:46,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 19:48:46,671 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 19:48:46,671 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 19:48:46,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 19:48:46,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 19:48:46,674 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 19:48:46,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 19:48:46,674 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 19:48:46,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 19:48:46,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 19:48:46,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 19:48:46,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 19:48:46,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 19:48:46,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 19:48:46,675 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 19:48:46,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 19:48:46,676 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 19:48:46,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 19:48:46,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 19:48:46,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 19:48:46,676 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 19:48:46,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 19:48:46,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 19:48:46,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 19:48:46,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 19:48:46,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 19:48:46,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 19:48:46,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 19:48:46,677 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 19:48:46,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 19:48:46,677 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 19:48:46,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 19:48:46,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 19:48:46,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 19:48:46,994 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-21 19:48:46,995 INFO L275 PluginConnector]: CDTParser initialized [2021-05-21 19:48:46,995 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/predecessorInAtomicBlockBug.c [2021-05-21 19:48:47,056 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9612f855c/fc776a6923c647aa9a9e7f7c471e45fa/FLAG8e316af9a [2021-05-21 19:48:47,511 INFO L306 CDTParser]: Found 1 translation units. [2021-05-21 19:48:47,512 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/predecessorInAtomicBlockBug.c [2021-05-21 19:48:47,512 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-05-21 19:48:47,552 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9612f855c/fc776a6923c647aa9a9e7f7c471e45fa/FLAG8e316af9a [2021-05-21 19:48:48,051 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9612f855c/fc776a6923c647aa9a9e7f7c471e45fa [2021-05-21 19:48:48,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 19:48:48,054 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-21 19:48:48,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-21 19:48:48,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-21 19:48:48,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-21 19:48:48,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 07:48:48" (1/1) ... [2021-05-21 19:48:48,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2523a59b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 07:48:48, skipping insertion in model container [2021-05-21 19:48:48,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 07:48:48" (1/1) ... [2021-05-21 19:48:48,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-21 19:48:48,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-21 19:48:48,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 19:48:48,272 INFO L203 MainTranslator]: Completed pre-run [2021-05-21 19:48:48,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 19:48:48,296 INFO L208 MainTranslator]: Completed translation [2021-05-21 19:48:48,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 07:48:48 WrapperNode [2021-05-21 19:48:48,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-21 19:48:48,298 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 19:48:48,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 19:48:48,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 19:48:48,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 07:48:48" (1/1) ... [2021-05-21 19:48:48,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 07:48:48" (1/1) ... [2021-05-21 19:48:48,324 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 19:48:48,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 19:48:48,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 19:48:48,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 19:48:48,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 07:48:48" (1/1) ... [2021-05-21 19:48:48,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 07:48:48" (1/1) ... [2021-05-21 19:48:48,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 07:48:48" (1/1) ... [2021-05-21 19:48:48,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 07:48:48" (1/1) ... [2021-05-21 19:48:48,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 07:48:48" (1/1) ... [2021-05-21 19:48:48,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 07:48:48" (1/1) ... [2021-05-21 19:48:48,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 07:48:48" (1/1) ... [2021-05-21 19:48:48,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 19:48:48,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 19:48:48,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 19:48:48,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 19:48:48,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 07:48:48" (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 [2021-05-21 19:48:48,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-21 19:48:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-05-21 19:48:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-05-21 19:48:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-05-21 19:48:48,417 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-05-21 19:48:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 19:48:48,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 19:48:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-21 19:48:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-21 19:48:48,419 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-21 19:48:48,612 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 19:48:48,613 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-05-21 19:48:48,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 07:48:48 BoogieIcfgContainer [2021-05-21 19:48:48,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 19:48:48,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 19:48:48,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 19:48:48,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 19:48:48,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.05 07:48:48" (1/3) ... [2021-05-21 19:48:48,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5545b4b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 07:48:48, skipping insertion in model container [2021-05-21 19:48:48,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 07:48:48" (2/3) ... [2021-05-21 19:48:48,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5545b4b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 07:48:48, skipping insertion in model container [2021-05-21 19:48:48,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 07:48:48" (3/3) ... [2021-05-21 19:48:48,620 INFO L111 eAbstractionObserver]: Analyzing ICFG predecessorInAtomicBlockBug.c [2021-05-21 19:48:48,641 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 19:48:48,641 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 19:48:48,641 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 19:48:48,642 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 19:48:48,668 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:48:48,669 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:48:48,669 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:48:48,669 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:48:48,669 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:48:48,669 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:48:48,670 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:48:48,670 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:48:48,672 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:48:48,680 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:48:48,681 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:48:48,681 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:48:48,683 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:48:48,683 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:48:48,683 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:48:48,683 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:48:48,692 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-21 19:48:48,707 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-05-21 19:48:48,721 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 19:48:48,722 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 19:48:48,722 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 19:48:48,722 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 19:48:48,722 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 19:48:48,722 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 19:48:48,722 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 19:48:48,722 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 19:48:48,730 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 25 transitions, 55 flow [2021-05-21 19:48:48,741 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 65 states, 63 states have (on average 1.6507936507936507) internal successors, (104), 64 states have internal predecessors, (104), 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) [2021-05-21 19:48:48,743 INFO L276 IsEmpty]: Start isEmpty. Operand has 65 states, 63 states have (on average 1.6507936507936507) internal successors, (104), 64 states have internal predecessors, (104), 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) [2021-05-21 19:48:48,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-21 19:48:48,748 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:48:48,749 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:48:48,749 INFO L430 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:48:48,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:48:48,754 INFO L82 PathProgramCache]: Analyzing trace with hash 2023173854, now seen corresponding path program 1 times [2021-05-21 19:48:48,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:48:48,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123054330] [2021-05-21 19:48:48,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:48:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:48:48,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:48:48,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:48:48,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123054330] [2021-05-21 19:48:48,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123054330] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:48:48,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:48:48,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-21 19:48:48,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635123509] [2021-05-21 19:48:48,961 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 19:48:48,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:48:48,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 19:48:48,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 19:48:48,979 INFO L87 Difference]: Start difference. First operand has 65 states, 63 states have (on average 1.6507936507936507) internal successors, (104), 64 states have internal predecessors, (104), 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) Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-05-21 19:48:49,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:48:49,027 INFO L93 Difference]: Finished difference Result 80 states and 125 transitions. [2021-05-21 19:48:49,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 19:48:49,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) Word has length 13 [2021-05-21 19:48:49,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:48:49,035 INFO L225 Difference]: With dead ends: 80 [2021-05-21 19:48:49,035 INFO L226 Difference]: Without dead ends: 35 [2021-05-21 19:48:49,036 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 19:48:49,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-21 19:48:49,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-05-21 19:48:49,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 states have internal predecessors, (47), 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) [2021-05-21 19:48:49,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 47 transitions. [2021-05-21 19:48:49,063 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 47 transitions. Word has length 13 [2021-05-21 19:48:49,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:48:49,063 INFO L482 AbstractCegarLoop]: Abstraction has 35 states and 47 transitions. [2021-05-21 19:48:49,063 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-05-21 19:48:49,064 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 47 transitions. [2021-05-21 19:48:49,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-21 19:48:49,064 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:48:49,064 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:48:49,065 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 19:48:49,065 INFO L430 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:48:49,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:48:49,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1079597256, now seen corresponding path program 1 times [2021-05-21 19:48:49,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:48:49,070 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697633600] [2021-05-21 19:48:49,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:48:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-21 19:48:49,100 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-21 19:48:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-21 19:48:49,112 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-21 19:48:49,135 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-21 19:48:49,135 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-05-21 19:48:49,136 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 19:48:49,139 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 19:48:49,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 07:48:49 BasicIcfg [2021-05-21 19:48:49,161 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 19:48:49,163 INFO L168 Benchmark]: Toolchain (without parser) took 1108.03 ms. Allocated memory is still 396.4 MB. Free memory was 358.2 MB in the beginning and 335.4 MB in the end (delta: 22.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.0 GB. [2021-05-21 19:48:49,164 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 396.4 MB. Free memory is still 376.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 19:48:49,165 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.00 ms. Allocated memory is still 396.4 MB. Free memory was 357.9 MB in the beginning and 379.5 MB in the end (delta: -21.6 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. [2021-05-21 19:48:49,166 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.50 ms. Allocated memory is still 396.4 MB. Free memory was 379.5 MB in the beginning and 377.4 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 19:48:49,166 INFO L168 Benchmark]: Boogie Preprocessor took 19.57 ms. Allocated memory is still 396.4 MB. Free memory was 377.4 MB in the beginning and 376.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 19:48:49,167 INFO L168 Benchmark]: RCFGBuilder took 267.68 ms. Allocated memory is still 396.4 MB. Free memory was 376.3 MB in the beginning and 361.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-05-21 19:48:49,168 INFO L168 Benchmark]: TraceAbstraction took 546.32 ms. Allocated memory is still 396.4 MB. Free memory was 361.6 MB in the beginning and 335.4 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-05-21 19:48:49,175 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 396.4 MB. Free memory is still 376.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 237.00 ms. Allocated memory is still 396.4 MB. Free memory was 357.9 MB in the beginning and 379.5 MB in the end (delta: -21.6 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.50 ms. Allocated memory is still 396.4 MB. Free memory was 379.5 MB in the beginning and 377.4 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 19.57 ms. Allocated memory is still 396.4 MB. Free memory was 377.4 MB in the beginning and 376.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 267.68 ms. Allocated memory is still 396.4 MB. Free memory was 376.3 MB in the beginning and 361.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 546.32 ms. Allocated memory is still 396.4 MB. Free memory was 361.6 MB in the beginning and 335.4 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 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 with 1 thread instances CFG has 3 procedures, 33 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 417.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 7.5ms, AutomataDifference: 74.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 18.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 26 SDtfs, 9 SDslu, 10 SDs, 0 SdLazy, 7 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 27.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 15.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.8ms SsaConstructionTime, 44.6ms SatisfiabilityAnalysisTime, 82.2ms InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 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...