/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-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/pthreadExitUnsafe.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 08:15:43,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 08:15:43,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 08:15:43,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-13 08:15:43,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-13 08:15:43,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-13 08:15:43,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-13 08:15:43,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-13 08:15:43,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-13 08:15:43,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-13 08:15:43,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-13 08:15:43,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-13 08:15:43,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 08:15:43,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 08:15:43,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 08:15:43,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 08:15:43,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 08:15:43,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 08:15:43,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 08:15:43,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 08:15:43,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 08:15:43,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 08:15:43,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 08:15:43,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 08:15:43,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-13 08:15:43,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-13 08:15:43,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-13 08:15:43,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-13 08:15:43,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-13 08:15:43,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-13 08:15:43,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-13 08:15:43,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-13 08:15:43,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-13 08:15:43,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-13 08:15:43,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-13 08:15:43,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-13 08:15:43,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-13 08:15:43,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-13 08:15:43,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 08:15:43,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 08:15:43,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 08:15:43,218 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-PN-NoLbe.epf [2021-06-13 08:15:43,275 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 08:15:43,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 08:15:43,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 08:15:43,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 08:15:43,277 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 08:15:43,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 08:15:43,277 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 08:15:43,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 08:15:43,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 08:15:43,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 08:15:43,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 08:15:43,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 08:15:43,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 08:15:43,278 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 08:15:43,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 08:15:43,279 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 08:15:43,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 08:15:43,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 08:15:43,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 08:15:43,279 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 08:15:43,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 08:15:43,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 08:15:43,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 08:15:43,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 08:15:43,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 08:15:43,280 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 08:15:43,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 08:15:43,282 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 08:15:43,282 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 08:15:43,282 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 08:15:43,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 08:15:43,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 08:15:43,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 08:15:43,601 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 08:15:43,601 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 08:15:43,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadExitUnsafe.c [2021-06-13 08:15:43,670 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35efed2e3/dc501139d6b34f5aa2aae5abb88c9bfb/FLAGd07bfa272 [2021-06-13 08:15:44,189 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 08:15:44,189 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadExitUnsafe.c [2021-06-13 08:15:44,189 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-13 08:15:44,190 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-13 08:15:44,190 WARN L117 ultiparseSymbolTable]: System include stdbool.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-13 08:15:44,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35efed2e3/dc501139d6b34f5aa2aae5abb88c9bfb/FLAGd07bfa272 [2021-06-13 08:15:44,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35efed2e3/dc501139d6b34f5aa2aae5abb88c9bfb [2021-06-13 08:15:44,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 08:15:44,683 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 08:15:44,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 08:15:44,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 08:15:44,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 08:15:44,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 08:15:44" (1/1) ... [2021-06-13 08:15:44,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c016913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:15:44, skipping insertion in model container [2021-06-13 08:15:44,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 08:15:44" (1/1) ... [2021-06-13 08:15:44,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 08:15:44,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 08:15:44,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 08:15:44,837 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 08:15:44,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 08:15:44,854 INFO L208 MainTranslator]: Completed translation [2021-06-13 08:15:44,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:15:44 WrapperNode [2021-06-13 08:15:44,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 08:15:44,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 08:15:44,855 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 08:15:44,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 08:15:44,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:15:44" (1/1) ... [2021-06-13 08:15:44,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:15:44" (1/1) ... [2021-06-13 08:15:44,879 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 08:15:44,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 08:15:44,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 08:15:44,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 08:15:44,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:15:44" (1/1) ... [2021-06-13 08:15:44,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:15:44" (1/1) ... [2021-06-13 08:15:44,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:15:44" (1/1) ... [2021-06-13 08:15:44,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:15:44" (1/1) ... [2021-06-13 08:15:44,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:15:44" (1/1) ... [2021-06-13 08:15:44,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:15:44" (1/1) ... [2021-06-13 08:15:44,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:15:44" (1/1) ... [2021-06-13 08:15:44,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 08:15:44,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 08:15:44,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 08:15:44,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 08:15:44,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:15:44" (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 [2021-06-13 08:15:44,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-13 08:15:44,974 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-06-13 08:15:44,974 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-06-13 08:15:44,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 08:15:44,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 08:15:44,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-13 08:15:44,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 08:15:44,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-13 08:15:44,978 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 08:15:45,185 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 08:15:45,186 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-06-13 08:15:45,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 08:15:45 BoogieIcfgContainer [2021-06-13 08:15:45,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 08:15:45,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 08:15:45,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 08:15:45,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 08:15:45,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 08:15:44" (1/3) ... [2021-06-13 08:15:45,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7efb2d3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 08:15:45, skipping insertion in model container [2021-06-13 08:15:45,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:15:44" (2/3) ... [2021-06-13 08:15:45,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7efb2d3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 08:15:45, skipping insertion in model container [2021-06-13 08:15:45,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 08:15:45" (3/3) ... [2021-06-13 08:15:45,195 INFO L111 eAbstractionObserver]: Analyzing ICFG pthreadExitUnsafe.c [2021-06-13 08:15:45,214 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 08:15:45,214 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 08:15:45,215 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 08:15:45,233 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:15:45,233 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:15:45,233 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:15:45,234 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:15:45,234 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:15:45,234 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:15:45,234 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:15:45,234 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:15:45,235 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:15:45,235 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:15:45,235 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:15:45,235 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:15:45,237 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:15:45,237 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:15:45,238 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:15:45,238 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:15:45,244 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-06-13 08:15:45,263 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-13 08:15:45,282 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 08:15:45,282 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 08:15:45,282 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 08:15:45,282 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 08:15:45,282 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 08:15:45,282 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 08:15:45,283 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 08:15:45,283 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 08:15:45,291 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 31 transitions, 70 flow [2021-06-13 08:15:45,311 INFO L129 PetriNetUnfolder]: 2/30 cut-off events. [2021-06-13 08:15:45,312 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-13 08:15:45,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 30 events. 2/30 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 9. Up to 3 conditions per place. [2021-06-13 08:15:45,314 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 31 transitions, 70 flow [2021-06-13 08:15:45,317 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 24 transitions, 54 flow [2021-06-13 08:15:45,331 INFO L129 PetriNetUnfolder]: 2/23 cut-off events. [2021-06-13 08:15:45,331 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-13 08:15:45,331 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:15:45,332 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:15:45,332 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:15:45,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:15:45,337 INFO L82 PathProgramCache]: Analyzing trace with hash -528968024, now seen corresponding path program 1 times [2021-06-13 08:15:45,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:15:45,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136176411] [2021-06-13 08:15:45,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:15:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:15:45,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:15:45,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:15:45,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:15:45,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:15:45,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:15:45,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:15:45,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136176411] [2021-06-13 08:15:45,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136176411] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:15:45,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:15:45,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-13 08:15:45,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121166922] [2021-06-13 08:15:45,539 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-13 08:15:45,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:15:45,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-13 08:15:45,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-13 08:15:45,556 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 31 [2021-06-13 08:15:45,558 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 24 transitions, 54 flow. Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 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) [2021-06-13 08:15:45,558 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:15:45,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 31 [2021-06-13 08:15:45,560 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:15:45,590 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-06-13 08:15:45,590 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-13 08:15:45,590 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 22 events. 0/22 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-06-13 08:15:45,591 INFO L132 encePairwiseOnDemand]: 29/31 looper letters, 0 selfloop transitions, 0 changer transitions 0/22 dead transitions. [2021-06-13 08:15:45,591 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 22 transitions, 50 flow [2021-06-13 08:15:45,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 08:15:45,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-06-13 08:15:45,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 58 transitions. [2021-06-13 08:15:45,600 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9354838709677419 [2021-06-13 08:15:45,602 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 58 transitions. [2021-06-13 08:15:45,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 58 transitions. [2021-06-13 08:15:45,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:15:45,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 58 transitions. [2021-06-13 08:15:45,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 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) [2021-06-13 08:15:45,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2021-06-13 08:15:45,612 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2021-06-13 08:15:45,613 INFO L185 Difference]: Start difference. First operand has 26 places, 24 transitions, 54 flow. Second operand 2 states and 58 transitions. [2021-06-13 08:15:45,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 22 transitions, 50 flow [2021-06-13 08:15:45,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 22 transitions, 46 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-13 08:15:45,619 INFO L241 Difference]: Finished difference. Result has 25 places, 22 transitions, 46 flow [2021-06-13 08:15:45,621 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=46, PETRI_PLACES=25, PETRI_TRANSITIONS=22} [2021-06-13 08:15:45,622 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2021-06-13 08:15:45,622 INFO L482 AbstractCegarLoop]: Abstraction has has 25 places, 22 transitions, 46 flow [2021-06-13 08:15:45,622 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 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) [2021-06-13 08:15:45,622 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:15:45,623 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:15:45,623 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 08:15:45,624 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:15:45,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:15:45,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1712854029, now seen corresponding path program 1 times [2021-06-13 08:15:45,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:15:45,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109475343] [2021-06-13 08:15:45,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:15:45,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-13 08:15:45,677 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-13 08:15:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-13 08:15:45,710 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-13 08:15:45,734 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-13 08:15:45,734 INFO L573 BasicCegarLoop]: Counterexample might be feasible [2021-06-13 08:15:45,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 08:15:45,739 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 08:15:45,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 08:15:45 BasicIcfg [2021-06-13 08:15:45,777 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 08:15:45,780 INFO L168 Benchmark]: Toolchain (without parser) took 1096.05 ms. Allocated memory is still 189.8 MB. Free memory was 152.7 MB in the beginning and 128.1 MB in the end (delta: 24.5 MB). Peak memory consumption was 25.1 MB. Max. memory is 8.0 GB. [2021-06-13 08:15:45,780 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 189.8 MB. Free memory is still 171.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 08:15:45,783 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.66 ms. Allocated memory is still 189.8 MB. Free memory was 152.5 MB in the beginning and 172.2 MB in the end (delta: -19.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-06-13 08:15:45,789 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.31 ms. Allocated memory is still 189.8 MB. Free memory was 172.2 MB in the beginning and 171.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 08:15:45,790 INFO L168 Benchmark]: Boogie Preprocessor took 15.67 ms. Allocated memory is still 189.8 MB. Free memory was 171.1 MB in the beginning and 170.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 08:15:45,791 INFO L168 Benchmark]: RCFGBuilder took 290.53 ms. Allocated memory is still 189.8 MB. Free memory was 170.1 MB in the beginning and 157.0 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-13 08:15:45,792 INFO L168 Benchmark]: TraceAbstraction took 588.90 ms. Allocated memory is still 189.8 MB. Free memory was 156.4 MB in the beginning and 128.1 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2021-06-13 08:15:45,799 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 189.8 MB. Free memory is still 171.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 169.66 ms. Allocated memory is still 189.8 MB. Free memory was 152.5 MB in the beginning and 172.2 MB in the end (delta: -19.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 24.31 ms. Allocated memory is still 189.8 MB. Free memory was 172.2 MB in the beginning and 171.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 15.67 ms. Allocated memory is still 189.8 MB. Free memory was 171.1 MB in the beginning and 170.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 290.53 ms. Allocated memory is still 189.8 MB. Free memory was 170.1 MB in the beginning and 157.0 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 588.90 ms. Allocated memory is still 189.8 MB. Free memory was 156.4 MB in the beginning and 128.1 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 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}] [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 for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 3 procedures, 36 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 13.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 459.0ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 72.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 34.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 0 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=54occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 11.6ms SsaConstructionTime, 71.0ms SatisfiabilityAnalysisTime, 69.3ms 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...