/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/pthreadExitUnsafe.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-12 18:37:27,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-12 18:37:27,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-12 18:37:27,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-12 18:37:27,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-12 18:37:27,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-12 18:37:27,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-12 18:37:27,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-12 18:37:27,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-12 18:37:27,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-12 18:37:27,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-12 18:37:27,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-12 18:37:27,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-12 18:37:27,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-12 18:37:27,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-12 18:37:27,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-12 18:37:27,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-12 18:37:27,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-12 18:37:27,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-12 18:37:27,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-12 18:37:27,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-12 18:37:27,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-12 18:37:27,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-12 18:37:27,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-12 18:37:27,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-12 18:37:27,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-12 18:37:27,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-12 18:37:27,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-12 18:37:27,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-12 18:37:27,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-12 18:37:27,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-12 18:37:27,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-12 18:37:27,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-12 18:37:27,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-12 18:37:27,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-12 18:37:27,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-12 18:37:27,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-12 18:37:27,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-12 18:37:27,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-12 18:37:27,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-12 18:37:27,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-12 18:37:27,953 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 [2021-08-12 18:37:27,968 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-12 18:37:27,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-12 18:37:27,969 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-12 18:37:27,969 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-12 18:37:27,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-12 18:37:27,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-12 18:37:27,970 INFO L138 SettingsManager]: * Use SBE=true [2021-08-12 18:37:27,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-12 18:37:27,970 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-12 18:37:27,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-12 18:37:27,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-12 18:37:27,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-12 18:37:27,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-12 18:37:27,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-12 18:37:27,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-12 18:37:27,971 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-12 18:37:27,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-12 18:37:27,971 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-12 18:37:27,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-12 18:37:27,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-12 18:37:27,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-12 18:37:27,972 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-12 18:37:27,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-12 18:37:27,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-12 18:37:27,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-12 18:37:27,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-12 18:37:27,972 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-12 18:37:27,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-12 18:37:27,973 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-12 18:37:27,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-12 18:37:27,973 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-12 18:37:28,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-12 18:37:28,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-12 18:37:28,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-12 18:37:28,229 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-12 18:37:28,229 INFO L275 PluginConnector]: CDTParser initialized [2021-08-12 18:37:28,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadExitUnsafe.c [2021-08-12 18:37:28,293 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f44516303/db07a49d6fbc473a9dfe2c4e86b9400d/FLAG6aa45a172 [2021-08-12 18:37:28,839 INFO L306 CDTParser]: Found 1 translation units. [2021-08-12 18:37:28,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadExitUnsafe.c [2021-08-12 18:37:28,839 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-08-12 18:37:28,839 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-08-12 18:37:28,839 WARN L117 ultiparseSymbolTable]: System include stdbool.h could not be resolved by CDT -- only built-in system includes are available. [2021-08-12 18:37:28,876 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f44516303/db07a49d6fbc473a9dfe2c4e86b9400d/FLAG6aa45a172 [2021-08-12 18:37:29,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f44516303/db07a49d6fbc473a9dfe2c4e86b9400d [2021-08-12 18:37:29,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-12 18:37:29,059 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-12 18:37:29,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-12 18:37:29,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-12 18:37:29,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-12 18:37:29,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.08 06:37:29" (1/1) ... [2021-08-12 18:37:29,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@742845cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:29, skipping insertion in model container [2021-08-12 18:37:29,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.08 06:37:29" (1/1) ... [2021-08-12 18:37:29,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-12 18:37:29,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-12 18:37:29,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-12 18:37:29,190 INFO L203 MainTranslator]: Completed pre-run [2021-08-12 18:37:29,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-12 18:37:29,220 INFO L208 MainTranslator]: Completed translation [2021-08-12 18:37:29,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:29 WrapperNode [2021-08-12 18:37:29,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-12 18:37:29,222 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-12 18:37:29,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-12 18:37:29,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-12 18:37:29,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:29" (1/1) ... [2021-08-12 18:37:29,236 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:29" (1/1) ... [2021-08-12 18:37:29,248 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-12 18:37:29,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-12 18:37:29,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-12 18:37:29,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-12 18:37:29,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:29" (1/1) ... [2021-08-12 18:37:29,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:29" (1/1) ... [2021-08-12 18:37:29,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:29" (1/1) ... [2021-08-12 18:37:29,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:29" (1/1) ... [2021-08-12 18:37:29,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:29" (1/1) ... [2021-08-12 18:37:29,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:29" (1/1) ... [2021-08-12 18:37:29,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:29" (1/1) ... [2021-08-12 18:37:29,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-12 18:37:29,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-12 18:37:29,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-12 18:37:29,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-12 18:37:29,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:29" (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 [2021-08-12 18:37:29,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-12 18:37:29,358 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-08-12 18:37:29,358 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-08-12 18:37:29,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-12 18:37:29,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-12 18:37:29,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-12 18:37:29,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-12 18:37:29,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-12 18:37:29,360 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-12 18:37:29,544 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-12 18:37:29,544 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-12 18:37:29,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 06:37:29 BoogieIcfgContainer [2021-08-12 18:37:29,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-12 18:37:29,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-12 18:37:29,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-12 18:37:29,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-12 18:37:29,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.08 06:37:29" (1/3) ... [2021-08-12 18:37:29,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e3cf35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 06:37:29, skipping insertion in model container [2021-08-12 18:37:29,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:29" (2/3) ... [2021-08-12 18:37:29,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e3cf35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 06:37:29, skipping insertion in model container [2021-08-12 18:37:29,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 06:37:29" (3/3) ... [2021-08-12 18:37:29,559 INFO L111 eAbstractionObserver]: Analyzing ICFG pthreadExitUnsafe.c [2021-08-12 18:37:29,563 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-12 18:37:29,563 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-12 18:37:29,564 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-12 18:37:29,601 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:29,601 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:29,601 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:29,601 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:29,601 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:29,602 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:29,602 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:29,602 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:29,602 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:29,602 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:29,602 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:29,602 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:29,604 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:29,604 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:29,604 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:29,604 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:29,621 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-08-12 18:37:29,635 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-12 18:37:29,661 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 18:37:29,661 INFO L379 AbstractCegarLoop]: Hoare is true [2021-08-12 18:37:29,661 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 18:37:29,661 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 18:37:29,661 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 18:37:29,661 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 18:37:29,662 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 18:37:29,662 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 18:37:29,667 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 31 transitions, 70 flow [2021-08-12 18:37:29,683 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 41 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 40 states have internal predecessors, (60), 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) [2021-08-12 18:37:29,686 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 40 states have internal predecessors, (60), 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) [2021-08-12 18:37:29,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-12 18:37:29,692 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:37:29,693 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:37:29,693 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 18:37:29,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:37:29,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1441360694, now seen corresponding path program 1 times [2021-08-12 18:37:29,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:37:29,703 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466840382] [2021-08-12 18:37:29,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:37:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:37:29,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:37:29,829 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:37:29,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466840382] [2021-08-12 18:37:29,830 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466840382] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:37:29,830 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:37:29,830 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-12 18:37:29,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506791184] [2021-08-12 18:37:29,833 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-08-12 18:37:29,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:37:29,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-12 18:37:29,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-12 18:37:29,846 INFO L87 Difference]: Start difference. First operand has 41 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 40 states have internal predecessors, (60), 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 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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) [2021-08-12 18:37:29,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:37:29,864 INFO L93 Difference]: Finished difference Result 53 states and 75 transitions. [2021-08-12 18:37:29,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-12 18:37:29,865 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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 21 [2021-08-12 18:37:29,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:37:29,870 INFO L225 Difference]: With dead ends: 53 [2021-08-12 18:37:29,870 INFO L226 Difference]: Without dead ends: 35 [2021-08-12 18:37:29,872 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-12 18:37:29,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-08-12 18:37:29,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-08-12 18:37:29,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 34 states have internal predecessors, (46), 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) [2021-08-12 18:37:29,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2021-08-12 18:37:29,901 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 21 [2021-08-12 18:37:29,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:37:29,902 INFO L482 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2021-08-12 18:37:29,902 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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) [2021-08-12 18:37:29,902 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2021-08-12 18:37:29,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-12 18:37:29,904 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:37:29,904 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:37:29,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-12 18:37:29,905 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 18:37:29,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:37:29,910 INFO L82 PathProgramCache]: Analyzing trace with hash 123046351, now seen corresponding path program 1 times [2021-08-12 18:37:29,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:37:29,911 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424158822] [2021-08-12 18:37:29,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:37:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-12 18:37:29,943 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-12 18:37:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-12 18:37:29,975 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-12 18:37:29,995 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-12 18:37:29,995 INFO L651 BasicCegarLoop]: Counterexample might be feasible [2021-08-12 18:37:29,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-12 18:37:29,998 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-12 18:37:30,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.08 06:37:30 BasicIcfg [2021-08-12 18:37:30,025 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-12 18:37:30,027 INFO L168 Benchmark]: Toolchain (without parser) took 967.82 ms. Allocated memory is still 187.7 MB. Free memory was 170.2 MB in the beginning and 128.8 MB in the end (delta: 41.4 MB). Peak memory consumption was 40.2 MB. Max. memory is 8.0 GB. [2021-08-12 18:37:30,028 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 127.9 MB. Free memory was 108.7 MB in the beginning and 108.6 MB in the end (delta: 81.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-12 18:37:30,029 INFO L168 Benchmark]: CACSL2BoogieTranslator took 162.28 ms. Allocated memory is still 187.7 MB. Free memory was 170.1 MB in the beginning and 170.4 MB in the end (delta: -294.0 kB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-08-12 18:37:30,029 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.66 ms. Allocated memory is still 187.7 MB. Free memory was 170.4 MB in the beginning and 169.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-12 18:37:30,030 INFO L168 Benchmark]: Boogie Preprocessor took 19.50 ms. Allocated memory is still 187.7 MB. Free memory was 169.0 MB in the beginning and 167.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-12 18:37:30,031 INFO L168 Benchmark]: RCFGBuilder took 276.36 ms. Allocated memory is still 187.7 MB. Free memory was 167.9 MB in the beginning and 155.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-08-12 18:37:30,032 INFO L168 Benchmark]: TraceAbstraction took 479.47 ms. Allocated memory is still 187.7 MB. Free memory was 154.7 MB in the beginning and 128.8 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. [2021-08-12 18:37:30,037 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 127.9 MB. Free memory was 108.7 MB in the beginning and 108.6 MB in the end (delta: 81.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 162.28 ms. Allocated memory is still 187.7 MB. Free memory was 170.1 MB in the beginning and 170.4 MB in the end (delta: -294.0 kB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 25.66 ms. Allocated memory is still 187.7 MB. Free memory was 170.4 MB in the beginning and 169.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Preprocessor took 19.50 ms. Allocated memory is still 187.7 MB. Free memory was 169.0 MB in the beginning and 167.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 276.36 ms. Allocated memory is still 187.7 MB. Free memory was 167.9 MB in the beginning and 155.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 479.47 ms. Allocated memory is still 187.7 MB. Free memory was 154.7 MB in the beginning and 128.8 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 28]: assertion can be violated assertion can be violated We found a FailurePath: [L24] 0 pthread_t th_id; [L25] FCALL, FORK 0 pthread_create(&th_id, NULL, foo, NULL) VAL [n={0:0}] [L26] 0 \read(th_id) VAL [n={0:0}, n={0:0}] [L17] COND TRUE 1 1 VAL [n={0:0}, n={0:0}] [L26] FCALL, JOIN 1 pthread_join(th_id, NULL) VAL [\result={0:0}, n={0:0}, n={0:0}] [L28] 0 CodeAnnotStmt[Assertion] VAL [\result={0:0}, n={0:0}, n={0:0}] - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 36 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 337.0ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 8.9ms, AutomataDifference: 38.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 22.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 22 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 18.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 15.2ms SsaConstructionTime, 42.1ms SatisfiabilityAnalysisTime, 42.9ms InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 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...