/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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/pthreadExitUnsafe.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 17:35:47,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 17:35:47,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 17:35:47,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 17:35:47,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 17:35:47,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 17:35:47,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 17:35:47,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 17:35:47,677 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 17:35:47,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 17:35:47,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 17:35:47,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 17:35:47,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 17:35:47,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 17:35:47,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 17:35:47,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 17:35:47,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 17:35:47,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 17:35:47,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 17:35:47,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 17:35:47,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 17:35:47,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 17:35:47,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 17:35:47,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 17:35:47,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 17:35:47,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 17:35:47,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 17:35:47,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 17:35:47,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 17:35:47,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 17:35:47,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 17:35:47,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 17:35:47,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 17:35:47,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 17:35:47,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 17:35:47,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 17:35:47,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 17:35:47,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 17:35:47,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 17:35:47,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 17:35:47,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 17:35:47,724 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-RepeatedSemanticLbe.epf [2021-03-25 17:35:47,759 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 17:35:47,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 17:35:47,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 17:35:47,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 17:35:47,762 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 17:35:47,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 17:35:47,763 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 17:35:47,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 17:35:47,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 17:35:47,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 17:35:47,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 17:35:47,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 17:35:47,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 17:35:47,764 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 17:35:47,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 17:35:47,765 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 17:35:47,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 17:35:47,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 17:35:47,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 17:35:47,765 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 17:35:47,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 17:35:47,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 17:35:47,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 17:35:47,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 17:35:47,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 17:35:47,766 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 17:35:47,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 17:35:47,766 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 17:35:47,766 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 17:35:47,767 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 17:35:48,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 17:35:48,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 17:35:48,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 17:35:48,077 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 17:35:48,078 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 17:35:48,079 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadExitUnsafe.c [2021-03-25 17:35:48,140 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68dcd90e6/5cc8f67cf0f3417f8adfd79ca0cea106/FLAG85c7fc824 [2021-03-25 17:35:48,601 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 17:35:48,602 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadExitUnsafe.c [2021-03-25 17:35:48,602 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-25 17:35:48,602 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-25 17:35:48,602 WARN L117 ultiparseSymbolTable]: System include stdbool.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-25 17:35:48,635 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68dcd90e6/5cc8f67cf0f3417f8adfd79ca0cea106/FLAG85c7fc824 [2021-03-25 17:35:48,986 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68dcd90e6/5cc8f67cf0f3417f8adfd79ca0cea106 [2021-03-25 17:35:48,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 17:35:48,990 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 17:35:48,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 17:35:48,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 17:35:48,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 17:35:48,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:35:48" (1/1) ... [2021-03-25 17:35:48,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29965db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:35:48, skipping insertion in model container [2021-03-25 17:35:48,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:35:48" (1/1) ... [2021-03-25 17:35:49,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 17:35:49,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 17:35:49,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 17:35:49,144 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 17:35:49,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 17:35:49,194 INFO L208 MainTranslator]: Completed translation [2021-03-25 17:35:49,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:35:49 WrapperNode [2021-03-25 17:35:49,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 17:35:49,196 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 17:35:49,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 17:35:49,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 17:35:49,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:35:49" (1/1) ... [2021-03-25 17:35:49,206 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:35:49" (1/1) ... [2021-03-25 17:35:49,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 17:35:49,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 17:35:49,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 17:35:49,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 17:35:49,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:35:49" (1/1) ... [2021-03-25 17:35:49,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:35:49" (1/1) ... [2021-03-25 17:35:49,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:35:49" (1/1) ... [2021-03-25 17:35:49,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:35:49" (1/1) ... [2021-03-25 17:35:49,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:35:49" (1/1) ... [2021-03-25 17:35:49,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:35:49" (1/1) ... [2021-03-25 17:35:49,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:35:49" (1/1) ... [2021-03-25 17:35:49,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 17:35:49,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 17:35:49,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 17:35:49,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 17:35:49,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:35:49" (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 [2021-03-25 17:35:49,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 17:35:49,295 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-03-25 17:35:49,295 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-03-25 17:35:49,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 17:35:49,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 17:35:49,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-25 17:35:49,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 17:35:49,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 17:35:49,297 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 17:35:49,459 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 17:35:49,460 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-03-25 17:35:49,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:35:49 BoogieIcfgContainer [2021-03-25 17:35:49,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 17:35:49,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 17:35:49,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 17:35:49,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 17:35:49,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:35:48" (1/3) ... [2021-03-25 17:35:49,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55116182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:35:49, skipping insertion in model container [2021-03-25 17:35:49,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:35:49" (2/3) ... [2021-03-25 17:35:49,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55116182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:35:49, skipping insertion in model container [2021-03-25 17:35:49,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:35:49" (3/3) ... [2021-03-25 17:35:49,477 INFO L111 eAbstractionObserver]: Analyzing ICFG pthreadExitUnsafe.c [2021-03-25 17:35:49,482 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 17:35:49,485 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 17:35:49,485 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 17:35:49,509 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:35:49,510 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:35:49,510 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:35:49,510 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:35:49,510 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:35:49,510 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:35:49,511 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:35:49,511 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:35:49,511 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:35:49,511 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:35:49,512 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:35:49,512 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:35:49,513 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:35:49,514 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:35:49,514 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:35:49,514 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:35:49,531 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-03-25 17:35:49,545 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-25 17:35:49,562 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 17:35:49,562 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 17:35:49,562 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 17:35:49,562 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 17:35:49,562 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 17:35:49,562 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 17:35:49,563 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 17:35:49,563 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 17:35:49,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 28 transitions, 64 flow [2021-03-25 17:35:49,591 INFO L129 PetriNetUnfolder]: 2/27 cut-off events. [2021-03-25 17:35:49,591 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 17:35:49,593 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. [2021-03-25 17:35:49,593 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 28 transitions, 64 flow [2021-03-25 17:35:49,596 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 21 transitions, 48 flow [2021-03-25 17:35:49,598 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:35:49,607 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 21 transitions, 48 flow [2021-03-25 17:35:49,610 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 21 transitions, 48 flow [2021-03-25 17:35:49,611 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 23 places, 21 transitions, 48 flow [2021-03-25 17:35:49,618 INFO L129 PetriNetUnfolder]: 2/21 cut-off events. [2021-03-25 17:35:49,619 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 17:35:49,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 21 events. 2/21 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 8. Up to 3 conditions per place. [2021-03-25 17:35:49,620 INFO L142 LiptonReduction]: Number of co-enabled transitions 24 [2021-03-25 17:35:50,009 INFO L154 LiptonReduction]: Checked pairs total: 14 [2021-03-25 17:35:50,009 INFO L156 LiptonReduction]: Total number of compositions: 13 [2021-03-25 17:35:50,011 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 414 [2021-03-25 17:35:50,026 INFO L129 PetriNetUnfolder]: 1/10 cut-off events. [2021-03-25 17:35:50,026 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 17:35:50,027 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:35:50,027 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:35:50,028 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:35:50,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:35:50,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1942435842, now seen corresponding path program 1 times [2021-03-25 17:35:50,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:35:50,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479867177] [2021-03-25 17:35:50,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:35:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 17:35:50,135 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 17:35:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 17:35:50,159 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 17:35:50,179 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 17:35:50,179 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 17:35:50,180 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 17:35:50,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:35:50 BasicIcfg [2021-03-25 17:35:50,201 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 17:35:50,203 INFO L168 Benchmark]: Toolchain (without parser) took 1211.71 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 234.4 MB in the beginning and 290.2 MB in the end (delta: -55.8 MB). Peak memory consumption was 42.2 MB. Max. memory is 16.0 GB. [2021-03-25 17:35:50,204 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 17:35:50,206 INFO L168 Benchmark]: CACSL2BoogieTranslator took 203.43 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 234.4 MB in the beginning and 338.3 MB in the end (delta: -104.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-25 17:35:50,206 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.90 ms. Allocated memory is still 354.4 MB. Free memory was 338.3 MB in the beginning and 337.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 17:35:50,207 INFO L168 Benchmark]: Boogie Preprocessor took 15.38 ms. Allocated memory is still 354.4 MB. Free memory was 337.0 MB in the beginning and 336.1 MB in the end (delta: 930.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 17:35:50,208 INFO L168 Benchmark]: RCFGBuilder took 225.44 ms. Allocated memory is still 354.4 MB. Free memory was 336.1 MB in the beginning and 324.1 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-25 17:35:50,208 INFO L168 Benchmark]: TraceAbstraction took 738.95 ms. Allocated memory is still 354.4 MB. Free memory was 323.8 MB in the beginning and 290.2 MB in the end (delta: 33.6 MB). Peak memory consumption was 32.8 MB. Max. memory is 16.0 GB. [2021-03-25 17:35:50,215 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 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 203.43 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 234.4 MB in the beginning and 338.3 MB in the end (delta: -104.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.90 ms. Allocated memory is still 354.4 MB. Free memory was 338.3 MB in the beginning and 337.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 15.38 ms. Allocated memory is still 354.4 MB. Free memory was 337.0 MB in the beginning and 336.1 MB in the end (delta: 930.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 225.44 ms. Allocated memory is still 354.4 MB. Free memory was 336.1 MB in the beginning and 324.1 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 738.95 ms. Allocated memory is still 354.4 MB. Free memory was 323.8 MB in the beginning and 290.2 MB in the end (delta: 33.6 MB). Peak memory consumption was 32.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 398.9ms, 23 PlacesBefore, 14 PlacesAfterwards, 21 TransitionsBefore, 11 TransitionsAfterwards, 24 CoEnabledTransitionPairs, 3 FixpointIterations, 7 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 13 TotalNumberOfCompositions, 14 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 14, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 14, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 14, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 14, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 14, unknown conditional: 0, unknown unconditional: 14] , Statistics on independence cache: Total cache size (in pairs): 1, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - 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 CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 7.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 622.6ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 455.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 0, 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: 9.4ms SsaConstructionTime, 27.5ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...