/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-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/14b-subsequent-blocks.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 12:56:51,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 12:56:51,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 12:56:51,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 12:56:51,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 12:56:51,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 12:56:51,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 12:56:51,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 12:56:51,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 12:56:51,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 12:56:51,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 12:56:51,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 12:56:51,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 12:56:51,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 12:56:51,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 12:56:51,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 12:56:51,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 12:56:51,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-05 12:56:51,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-05 12:56:51,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-05 12:56:51,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-05 12:56:51,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-05 12:56:51,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-05 12:56:51,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-05 12:56:51,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-05 12:56:51,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 12:56:51,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 12:56:51,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 12:56:51,458 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-Separate.epf [2021-06-05 12:56:51,497 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 12:56:51,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 12:56:51,498 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 12:56:51,498 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 12:56:51,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 12:56:51,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 12:56:51,499 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 12:56:51,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 12:56:51,499 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 12:56:51,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 12:56:51,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 12:56:51,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 12:56:51,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 12:56:51,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 12:56:51,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 12:56:51,500 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 12:56:51,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 12:56:51,502 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 12:56:51,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 12:56:51,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 12:56:51,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 12:56:51,503 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 12:56:51,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 12:56:51,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 12:56:51,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 12:56:51,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 12:56:51,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 12:56:51,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 12:56:51,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 12:56:51,505 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 12:56:51,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 12:56:51,505 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 12:56:51,505 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 12:56:51,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 12:56:51,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 12:56:51,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 12:56:51,804 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 12:56:51,804 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 12:56:51,805 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/14b-subsequent-blocks.c [2021-06-05 12:56:51,868 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66958e8bf/2df99d0cd72f412fae4b96f26f4a3d70/FLAG601f4da4b [2021-06-05 12:56:52,471 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 12:56:52,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/14b-subsequent-blocks.c [2021-06-05 12:56:52,472 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-05 12:56:52,503 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66958e8bf/2df99d0cd72f412fae4b96f26f4a3d70/FLAG601f4da4b [2021-06-05 12:56:52,891 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66958e8bf/2df99d0cd72f412fae4b96f26f4a3d70 [2021-06-05 12:56:52,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 12:56:52,897 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 12:56:52,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 12:56:52,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 12:56:52,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 12:56:52,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 12:56:52" (1/1) ... [2021-06-05 12:56:52,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2862c48b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:52, skipping insertion in model container [2021-06-05 12:56:52,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 12:56:52" (1/1) ... [2021-06-05 12:56:52,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 12:56:52,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 12:56:53,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 12:56:53,109 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 12:56:53,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 12:56:53,133 INFO L208 MainTranslator]: Completed translation [2021-06-05 12:56:53,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:53 WrapperNode [2021-06-05 12:56:53,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 12:56:53,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 12:56:53,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 12:56:53,137 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 12:56:53,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:53" (1/1) ... [2021-06-05 12:56:53,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:53" (1/1) ... [2021-06-05 12:56:53,163 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 12:56:53,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 12:56:53,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 12:56:53,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 12:56:53,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:53" (1/1) ... [2021-06-05 12:56:53,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:53" (1/1) ... [2021-06-05 12:56:53,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:53" (1/1) ... [2021-06-05 12:56:53,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:53" (1/1) ... [2021-06-05 12:56:53,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:53" (1/1) ... [2021-06-05 12:56:53,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:53" (1/1) ... [2021-06-05 12:56:53,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:53" (1/1) ... [2021-06-05 12:56:53,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 12:56:53,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 12:56:53,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 12:56:53,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 12:56:53,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:53" (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 [2021-06-05 12:56:53,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 12:56:53,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 12:56:53,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-05 12:56:53,253 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-06-05 12:56:53,253 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-06-05 12:56:53,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 12:56:53,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 12:56:53,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 12:56:53,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 12:56:53,256 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 12:56:53,514 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 12:56:53,515 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-05 12:56:53,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 12:56:53 BoogieIcfgContainer [2021-06-05 12:56:53,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 12:56:53,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 12:56:53,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 12:56:53,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 12:56:53,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 12:56:52" (1/3) ... [2021-06-05 12:56:53,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cabf1e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 12:56:53, skipping insertion in model container [2021-06-05 12:56:53,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:53" (2/3) ... [2021-06-05 12:56:53,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cabf1e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 12:56:53, skipping insertion in model container [2021-06-05 12:56:53,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 12:56:53" (3/3) ... [2021-06-05 12:56:53,522 INFO L111 eAbstractionObserver]: Analyzing ICFG 14b-subsequent-blocks.c [2021-06-05 12:56:53,541 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 12:56:53,541 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 12:56:53,541 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 12:56:53,542 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 12:56:53,561 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:53,561 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:53,561 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:53,561 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:53,562 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:53,562 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:53,562 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:53,562 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:53,562 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:53,563 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:53,563 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:53,563 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:53,564 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:53,565 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:53,565 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:53,565 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:53,578 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 12:56:53,592 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-05 12:56:53,607 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 12:56:53,607 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 12:56:53,607 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 12:56:53,608 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 12:56:53,608 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 12:56:53,608 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 12:56:53,608 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 12:56:53,608 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 12:56:53,616 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 26 transitions, 57 flow [2021-06-05 12:56:53,627 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 66 states, 64 states have (on average 1.640625) internal successors, (105), 65 states have internal predecessors, (105), 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) [2021-06-05 12:56:53,629 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 64 states have (on average 1.640625) internal successors, (105), 65 states have internal predecessors, (105), 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) [2021-06-05 12:56:53,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 12:56:53,634 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:56:53,635 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:56:53,635 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:56:53,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:56:53,640 INFO L82 PathProgramCache]: Analyzing trace with hash 713342842, now seen corresponding path program 1 times [2021-06-05 12:56:53,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:56:53,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831752657] [2021-06-05 12:56:53,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:56:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:56:53,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 12:56:53,780 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:56:53,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831752657] [2021-06-05 12:56:53,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831752657] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 12:56:53,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 12:56:53,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 12:56:53,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290199094] [2021-06-05 12:56:53,785 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 12:56:53,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:56:53,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 12:56:53,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-05 12:56:53,799 INFO L87 Difference]: Start difference. First operand has 66 states, 64 states have (on average 1.640625) internal successors, (105), 65 states have internal predecessors, (105), 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 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-06-05 12:56:53,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:56:53,840 INFO L93 Difference]: Finished difference Result 85 states and 133 transitions. [2021-06-05 12:56:53,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 12:56:53,842 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2021-06-05 12:56:53,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:56:53,849 INFO L225 Difference]: With dead ends: 85 [2021-06-05 12:56:53,849 INFO L226 Difference]: Without dead ends: 30 [2021-06-05 12:56:53,850 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-05 12:56:53,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-06-05 12:56:53,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-06-05 12:56:53,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 states have internal predecessors, (38), 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) [2021-06-05 12:56:53,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2021-06-05 12:56:53,877 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 16 [2021-06-05 12:56:53,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:56:53,877 INFO L482 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2021-06-05 12:56:53,877 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-06-05 12:56:53,878 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2021-06-05 12:56:53,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 12:56:53,878 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:56:53,878 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:56:53,879 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 12:56:53,879 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:56:53,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:56:53,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1658139655, now seen corresponding path program 1 times [2021-06-05 12:56:53,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:56:53,880 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133810448] [2021-06-05 12:56:53,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:56:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 12:56:53,894 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 12:56:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 12:56:53,903 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 12:56:53,919 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 12:56:53,919 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 12:56:53,920 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 12:56:53,922 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 12:56:53,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 12:56:53 BasicIcfg [2021-06-05 12:56:53,940 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 12:56:53,941 INFO L168 Benchmark]: Toolchain (without parser) took 1043.85 ms. Allocated memory is still 337.6 MB. Free memory was 299.6 MB in the beginning and 274.4 MB in the end (delta: 25.2 MB). Peak memory consumption was 23.7 MB. Max. memory is 16.0 GB. [2021-06-05 12:56:53,942 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 337.6 MB. Free memory was 318.1 MB in the beginning and 318.0 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 12:56:53,943 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.84 ms. Allocated memory is still 337.6 MB. Free memory was 299.4 MB in the beginning and 319.5 MB in the end (delta: -20.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. [2021-06-05 12:56:53,943 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.01 ms. Allocated memory is still 337.6 MB. Free memory was 319.5 MB in the beginning and 318.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 12:56:53,944 INFO L168 Benchmark]: Boogie Preprocessor took 19.34 ms. Allocated memory is still 337.6 MB. Free memory was 318.5 MB in the beginning and 317.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 12:56:53,944 INFO L168 Benchmark]: RCFGBuilder took 330.85 ms. Allocated memory is still 337.6 MB. Free memory was 317.4 MB in the beginning and 301.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-06-05 12:56:53,945 INFO L168 Benchmark]: TraceAbstraction took 422.77 ms. Allocated memory is still 337.6 MB. Free memory was 301.7 MB in the beginning and 274.4 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2021-06-05 12:56:53,948 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 337.6 MB. Free memory was 318.1 MB in the beginning and 318.0 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 235.84 ms. Allocated memory is still 337.6 MB. Free memory was 299.4 MB in the beginning and 319.5 MB in the end (delta: -20.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 27.01 ms. Allocated memory is still 337.6 MB. Free memory was 319.5 MB in the beginning and 318.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 19.34 ms. Allocated memory is still 337.6 MB. Free memory was 318.5 MB in the beginning and 317.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 330.85 ms. Allocated memory is still 337.6 MB. Free memory was 317.4 MB in the beginning and 301.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 422.77 ms. Allocated memory is still 337.6 MB. Free memory was 301.7 MB in the beginning and 274.4 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 35]: assertion can be violated assertion can be violated We found a FailurePath: [L15] 0 int x = -1; VAL [x=-1] [L23] 0 pthread_t threadId; VAL [x=-1] [L24] FCALL, FORK 0 pthread_create(&threadId, NULL, &foo, NULL) VAL [arg={0:0}, x=-1] [L27] 0 x = 1 [L28] 0 x = x + 1 VAL [arg={0:0}, arg={0:0}, x=2] [L18] 1 x = 0 VAL [arg={0:0}, arg={0:0}, x=0] [L31] 0 x = x + 1 [L32] 0 x = x + 1 VAL [arg={0:0}, arg={0:0}, x=2] [L35] 0 CodeAnnotStmt[Assertion] VAL [arg={0:0}, arg={0:0}, x=2] - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 33 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 315.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 7.5ms, AutomataDifference: 64.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 18.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 31 SDtfs, 16 SDslu, 22 SDs, 0 SdLazy, 10 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 15.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.8ms SsaConstructionTime, 25.8ms SatisfiabilityAnalysisTime, 57.0ms InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 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...