/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-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/pthreadExitUnsafe.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 04:25:24,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 04:25:24,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 04:25:25,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 04:25:25,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 04:25:25,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 04:25:25,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 04:25:25,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 04:25:25,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 04:25:25,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 04:25:25,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 04:25:25,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 04:25:25,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 04:25:25,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 04:25:25,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 04:25:25,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 04:25:25,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 04:25:25,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 04:25:25,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 04:25:25,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 04:25:25,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 04:25:25,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 04:25:25,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 04:25:25,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 04:25:25,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 04:25:25,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 04:25:25,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 04:25:25,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 04:25:25,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 04:25:25,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 04:25:25,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 04:25:25,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 04:25:25,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 04:25:25,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 04:25:25,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 04:25:25,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 04:25:25,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 04:25:25,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 04:25:25,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 04:25:25,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 04:25:25,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 04:25:25,032 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 [2021-03-11 04:25:25,056 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 04:25:25,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 04:25:25,059 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 04:25:25,059 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 04:25:25,059 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 04:25:25,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 04:25:25,059 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 04:25:25,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 04:25:25,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 04:25:25,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 04:25:25,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 04:25:25,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 04:25:25,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 04:25:25,060 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 04:25:25,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 04:25:25,060 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 04:25:25,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 04:25:25,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 04:25:25,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 04:25:25,061 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 04:25:25,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 04:25:25,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 04:25:25,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 04:25:25,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 04:25:25,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 04:25:25,061 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 04:25:25,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 04:25:25,061 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 04:25:25,061 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 04:25:25,062 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 04:25:25,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 04:25:25,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 04:25:25,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 04:25:25,313 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 04:25:25,313 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 04:25:25,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadExitUnsafe.c [2021-03-11 04:25:25,374 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80f762eec/51d33f90e5b94a71a6ab8d1e06e42080/FLAGa8a7f3f90 [2021-03-11 04:25:25,699 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 04:25:25,699 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadExitUnsafe.c [2021-03-11 04:25:25,699 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-11 04:25:25,699 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-11 04:25:25,700 WARN L117 ultiparseSymbolTable]: System include stdbool.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-11 04:25:25,723 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80f762eec/51d33f90e5b94a71a6ab8d1e06e42080/FLAGa8a7f3f90 [2021-03-11 04:25:25,737 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80f762eec/51d33f90e5b94a71a6ab8d1e06e42080 [2021-03-11 04:25:25,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 04:25:25,743 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 04:25:25,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 04:25:25,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 04:25:25,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 04:25:25,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 04:25:25" (1/1) ... [2021-03-11 04:25:25,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b04fbe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 04:25:25, skipping insertion in model container [2021-03-11 04:25:25,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 04:25:25" (1/1) ... [2021-03-11 04:25:25,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 04:25:25,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 04:25:25,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 04:25:25,851 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 04:25:25,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 04:25:25,864 INFO L208 MainTranslator]: Completed translation [2021-03-11 04:25:25,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 04:25:25 WrapperNode [2021-03-11 04:25:25,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 04:25:25,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 04:25:25,865 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 04:25:25,865 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 04:25:25,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 04:25:25" (1/1) ... [2021-03-11 04:25:25,874 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 04:25:25" (1/1) ... [2021-03-11 04:25:25,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 04:25:25,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 04:25:25,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 04:25:25,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 04:25:25,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 04:25:25" (1/1) ... [2021-03-11 04:25:25,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 04:25:25" (1/1) ... [2021-03-11 04:25:25,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 04:25:25" (1/1) ... [2021-03-11 04:25:25,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 04:25:25" (1/1) ... [2021-03-11 04:25:25,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 04:25:25" (1/1) ... [2021-03-11 04:25:25,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 04:25:25" (1/1) ... [2021-03-11 04:25:25,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 04:25:25" (1/1) ... [2021-03-11 04:25:25,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 04:25:25,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 04:25:25,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 04:25:25,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 04:25:25,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 04:25:25" (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 [2021-03-11 04:25:25,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 04:25:25,977 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-03-11 04:25:25,978 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-03-11 04:25:25,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 04:25:25,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 04:25:25,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-11 04:25:25,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 04:25:25,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 04:25:25,980 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 04:25:26,162 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 04:25:26,162 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-03-11 04:25:26,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 04:25:26 BoogieIcfgContainer [2021-03-11 04:25:26,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 04:25:26,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 04:25:26,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 04:25:26,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 04:25:26,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 04:25:25" (1/3) ... [2021-03-11 04:25:26,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311810cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 04:25:26, skipping insertion in model container [2021-03-11 04:25:26,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 04:25:25" (2/3) ... [2021-03-11 04:25:26,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311810cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 04:25:26, skipping insertion in model container [2021-03-11 04:25:26,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 04:25:26" (3/3) ... [2021-03-11 04:25:26,168 INFO L111 eAbstractionObserver]: Analyzing ICFG pthreadExitUnsafe.c [2021-03-11 04:25:26,171 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 04:25:26,173 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 04:25:26,173 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 04:25:26,186 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 04:25:26,186 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 04:25:26,186 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 04:25:26,186 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 04:25:26,186 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 04:25:26,187 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 04:25:26,187 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 04:25:26,187 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 04:25:26,187 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 04:25:26,187 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 04:25:26,187 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 04:25:26,187 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 04:25:26,189 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 04:25:26,189 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 04:25:26,189 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 04:25:26,189 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 04:25:26,193 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-03-11 04:25:26,205 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-11 04:25:26,218 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 04:25:26,218 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 04:25:26,218 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 04:25:26,218 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 04:25:26,219 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 04:25:26,219 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 04:25:26,219 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 04:25:26,219 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 04:25:26,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 28 transitions, 64 flow [2021-03-11 04:25:26,250 INFO L129 PetriNetUnfolder]: 2/27 cut-off events. [2021-03-11 04:25:26,250 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-11 04:25:26,252 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 27 events. 2/27 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 8. Up to 3 conditions per place. [2021-03-11 04:25:26,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 28 transitions, 64 flow [2021-03-11 04:25:26,254 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 21 transitions, 48 flow [2021-03-11 04:25:26,268 INFO L129 PetriNetUnfolder]: 2/20 cut-off events. [2021-03-11 04:25:26,268 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-11 04:25:26,268 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:25:26,269 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:25:26,269 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 04:25:26,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:25:26,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1377725993, now seen corresponding path program 1 times [2021-03-11 04:25:26,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:25:26,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833640629] [2021-03-11 04:25:26,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:25:26,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:25:26,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:25:26,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:25:26,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:25:26,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:25:26,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:25:26,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833640629] [2021-03-11 04:25:26,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:25:26,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 04:25:26,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950724548] [2021-03-11 04:25:26,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-11 04:25:26,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:25:26,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-11 04:25:26,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 04:25:26,411 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 28 [2021-03-11 04:25:26,415 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 48 flow. Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 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) [2021-03-11 04:25:26,415 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:25:26,415 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 28 [2021-03-11 04:25:26,416 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:25:26,422 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-11 04:25:26,423 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-11 04:25:26,423 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 19 events. 0/19 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 1/20 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-11 04:25:26,423 INFO L132 encePairwiseOnDemand]: 26/28 looper letters, 0 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2021-03-11 04:25:26,424 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 19 transitions, 44 flow [2021-03-11 04:25:26,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-11 04:25:26,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-03-11 04:25:26,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 52 transitions. [2021-03-11 04:25:26,430 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9285714285714286 [2021-03-11 04:25:26,430 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 52 transitions. [2021-03-11 04:25:26,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 52 transitions. [2021-03-11 04:25:26,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:25:26,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 52 transitions. [2021-03-11 04:25:26,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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) [2021-03-11 04:25:26,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2021-03-11 04:25:26,436 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2021-03-11 04:25:26,437 INFO L185 Difference]: Start difference. First operand has 23 places, 21 transitions, 48 flow. Second operand 2 states and 52 transitions. [2021-03-11 04:25:26,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 19 transitions, 44 flow [2021-03-11 04:25:26,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 19 transitions, 40 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 04:25:26,442 INFO L241 Difference]: Finished difference. Result has 22 places, 19 transitions, 40 flow [2021-03-11 04:25:26,444 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=22, PETRI_TRANSITIONS=19} [2021-03-11 04:25:26,444 INFO L335 CegarLoopForPetriNet]: 23 programPoint places, -1 predicate places. [2021-03-11 04:25:26,445 INFO L480 AbstractCegarLoop]: Abstraction has has 22 places, 19 transitions, 40 flow [2021-03-11 04:25:26,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 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) [2021-03-11 04:25:26,445 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:25:26,445 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:25:26,445 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 04:25:26,445 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 04:25:26,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:25:26,447 INFO L82 PathProgramCache]: Analyzing trace with hash 98422356, now seen corresponding path program 1 times [2021-03-11 04:25:26,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:25:26,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900432901] [2021-03-11 04:25:26,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:25:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 04:25:26,471 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 04:25:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 04:25:26,478 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 04:25:26,490 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-11 04:25:26,492 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-03-11 04:25:26,492 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 04:25:26,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 04:25:26 BasicIcfg [2021-03-11 04:25:26,509 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 04:25:26,510 INFO L168 Benchmark]: Toolchain (without parser) took 769.35 ms. Allocated memory is still 350.2 MB. Free memory was 313.4 MB in the beginning and 292.2 MB in the end (delta: 21.2 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.0 GB. [2021-03-11 04:25:26,510 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 350.2 MB. Free memory was 332.1 MB in the beginning and 332.0 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 04:25:26,511 INFO L168 Benchmark]: CACSL2BoogieTranslator took 119.50 ms. Allocated memory is still 350.2 MB. Free memory was 312.8 MB in the beginning and 329.8 MB in the end (delta: -17.0 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.0 GB. [2021-03-11 04:25:26,511 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.80 ms. Allocated memory is still 350.2 MB. Free memory was 328.8 MB in the beginning and 334.2 MB in the end (delta: -5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-03-11 04:25:26,512 INFO L168 Benchmark]: Boogie Preprocessor took 17.68 ms. Allocated memory is still 350.2 MB. Free memory was 334.2 MB in the beginning and 333.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 04:25:26,512 INFO L168 Benchmark]: RCFGBuilder took 240.24 ms. Allocated memory is still 350.2 MB. Free memory was 333.1 MB in the beginning and 319.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-11 04:25:26,513 INFO L168 Benchmark]: TraceAbstraction took 345.01 ms. Allocated memory is still 350.2 MB. Free memory was 319.5 MB in the beginning and 292.2 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2021-03-11 04:25:26,515 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 350.2 MB. Free memory was 332.1 MB in the beginning and 332.0 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 119.50 ms. Allocated memory is still 350.2 MB. Free memory was 312.8 MB in the beginning and 329.8 MB in the end (delta: -17.0 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 38.80 ms. Allocated memory is still 350.2 MB. Free memory was 328.8 MB in the beginning and 334.2 MB in the end (delta: -5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 17.68 ms. Allocated memory is still 350.2 MB. Free memory was 334.2 MB in the beginning and 333.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 240.24 ms. Allocated memory is still 350.2 MB. Free memory was 333.1 MB in the beginning and 319.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 345.01 ms. Allocated memory is still 350.2 MB. Free memory was 319.5 MB in the beginning and 292.2 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: 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}] [L17] COND TRUE 1 1 VAL [n={0:0}, n={0:0}] [L26] 0 \read(th_id) VAL [\result={0:0}, 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 CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 13.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 277.7ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 37.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 35.5ms, 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=48occurred 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: 6.3ms SsaConstructionTime, 32.4ms SatisfiabilityAnalysisTime, 39.4ms InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 17 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...