/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/pthreadExitUnsafe.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 20:31:17,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 20:31:17,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 20:31:17,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 20:31:17,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 20:31:17,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 20:31:17,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 20:31:17,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 20:31:17,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 20:31:17,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 20:31:17,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 20:31:17,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 20:31:17,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 20:31:17,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 20:31:17,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 20:31:17,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 20:31:17,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 20:31:17,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 20:31:17,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 20:31:17,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 20:31:17,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 20:31:17,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 20:31:17,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 20:31:17,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 20:31:17,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-15 20:31:17,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-15 20:31:17,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-15 20:31:17,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-15 20:31:17,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-15 20:31:17,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-15 20:31:17,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-15 20:31:17,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-15 20:31:17,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-15 20:31:17,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-15 20:31:17,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-15 20:31:17,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-15 20:31:17,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-15 20:31:17,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-15 20:31:17,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 20:31:17,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 20:31:17,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 20:31:17,724 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2022-03-15 20:31:17,744 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 20:31:17,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 20:31:17,746 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 20:31:17,747 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 20:31:17,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 20:31:17,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 20:31:17,748 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 20:31:17,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 20:31:17,748 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 20:31:17,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 20:31:17,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 20:31:17,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 20:31:17,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 20:31:17,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 20:31:17,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 20:31:17,749 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 20:31:17,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 20:31:17,749 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 20:31:17,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 20:31:17,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 20:31:17,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 20:31:17,750 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 20:31:17,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 20:31:17,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 20:31:17,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 20:31:17,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 20:31:17,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 20:31:17,750 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 20:31:17,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 20:31:17,751 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 20:31:17,751 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 20:31:17,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 20:31:17,751 INFO L138 SettingsManager]: * Interpolant automaton=MCR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 20:31:17,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 20:31:17,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 20:31:18,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 20:31:18,002 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 20:31:18,003 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 20:31:18,004 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadExitUnsafe.c [2022-03-15 20:31:18,069 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/958b348da/66dc9740c6bc48db98eee9ac7ff83607/FLAG1894319a6 [2022-03-15 20:31:18,474 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 20:31:18,475 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadExitUnsafe.c [2022-03-15 20:31:18,476 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2022-03-15 20:31:18,476 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2022-03-15 20:31:18,476 WARN L117 ultiparseSymbolTable]: System include stdbool.h could not be resolved by CDT -- only built-in system includes are available. [2022-03-15 20:31:18,501 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/958b348da/66dc9740c6bc48db98eee9ac7ff83607/FLAG1894319a6 [2022-03-15 20:31:18,890 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/958b348da/66dc9740c6bc48db98eee9ac7ff83607 [2022-03-15 20:31:18,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 20:31:18,893 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 20:31:18,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 20:31:18,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 20:31:18,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 20:31:18,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 08:31:18" (1/1) ... [2022-03-15 20:31:18,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24d6d435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 08:31:18, skipping insertion in model container [2022-03-15 20:31:18,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 08:31:18" (1/1) ... [2022-03-15 20:31:18,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 20:31:18,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 20:31:19,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 20:31:19,080 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 20:31:19,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 20:31:19,099 INFO L208 MainTranslator]: Completed translation [2022-03-15 20:31:19,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 08:31:19 WrapperNode [2022-03-15 20:31:19,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 20:31:19,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 20:31:19,101 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 20:31:19,101 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 20:31:19,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 08:31:19" (1/1) ... [2022-03-15 20:31:19,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 08:31:19" (1/1) ... [2022-03-15 20:31:19,128 INFO L137 Inliner]: procedures = 9, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2022-03-15 20:31:19,129 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 20:31:19,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 20:31:19,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 20:31:19,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 20:31:19,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 08:31:19" (1/1) ... [2022-03-15 20:31:19,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 08:31:19" (1/1) ... [2022-03-15 20:31:19,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 08:31:19" (1/1) ... [2022-03-15 20:31:19,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 08:31:19" (1/1) ... [2022-03-15 20:31:19,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 08:31:19" (1/1) ... [2022-03-15 20:31:19,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 08:31:19" (1/1) ... [2022-03-15 20:31:19,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 08:31:19" (1/1) ... [2022-03-15 20:31:19,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 20:31:19,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 20:31:19,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 20:31:19,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 20:31:19,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 08:31:19" (1/1) ... [2022-03-15 20:31:19,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 20:31:19,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 20:31:19,188 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-15 20:31:19,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-15 20:31:19,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 20:31:19,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 20:31:19,229 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-03-15 20:31:19,229 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-03-15 20:31:19,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 20:31:19,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 20:31:19,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 20:31:19,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 20:31:19,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 20:31:19,231 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 20:31:19,298 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 20:31:19,300 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 20:31:19,429 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 20:31:19,434 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 20:31:19,434 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-15 20:31:19,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 08:31:19 BoogieIcfgContainer [2022-03-15 20:31:19,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 20:31:19,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 20:31:19,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 20:31:19,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 20:31:19,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 08:31:18" (1/3) ... [2022-03-15 20:31:19,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a757769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 08:31:19, skipping insertion in model container [2022-03-15 20:31:19,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 08:31:19" (2/3) ... [2022-03-15 20:31:19,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a757769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 08:31:19, skipping insertion in model container [2022-03-15 20:31:19,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 08:31:19" (3/3) ... [2022-03-15 20:31:19,443 INFO L111 eAbstractionObserver]: Analyzing ICFG pthreadExitUnsafe.c [2022-03-15 20:31:19,448 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 20:31:19,448 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 20:31:19,448 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 20:31:19,448 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 20:31:19,482 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:31:19,483 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:31:19,483 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:31:19,483 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:31:19,483 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:31:19,483 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:31:19,484 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:31:19,484 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:31:19,484 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:31:19,484 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:31:19,485 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:31:19,485 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:31:19,488 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:31:19,488 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:31:19,488 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:31:19,488 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:31:19,492 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-03-15 20:31:19,572 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 20:31:19,590 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 20:31:19,590 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-03-15 20:31:19,605 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 20:31:19,613 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 35 transitions, 78 flow [2022-03-15 20:31:19,616 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 35 transitions, 78 flow [2022-03-15 20:31:19,617 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 35 transitions, 78 flow [2022-03-15 20:31:19,655 INFO L129 PetriNetUnfolder]: 2/34 cut-off events. [2022-03-15 20:31:19,655 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-03-15 20:31:19,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 34 events. 2/34 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 9. Up to 3 conditions per place. [2022-03-15 20:31:19,661 INFO L116 LiptonReduction]: Number of co-enabled transitions 36 [2022-03-15 20:31:20,372 INFO L131 LiptonReduction]: Checked pairs total: 41 [2022-03-15 20:31:20,372 INFO L133 LiptonReduction]: Total number of compositions: 31 [2022-03-15 20:31:20,386 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 12 places, 8 transitions, 24 flow [2022-03-15 20:31:20,395 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2022-03-15 20:31:20,396 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2022-03-15 20:31:20,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-03-15 20:31:20,400 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:31:20,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-03-15 20:31:20,401 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 20:31:20,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:31:20,405 INFO L85 PathProgramCache]: Analyzing trace with hash -4449324, now seen corresponding path program 1 times [2022-03-15 20:31:20,421 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:31:20,421 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549895129] [2022-03-15 20:31:20,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:31:20,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:31:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-15 20:31:20,500 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-15 20:31:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-15 20:31:20,531 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-15 20:31:20,532 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-15 20:31:20,533 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2022-03-15 20:31:20,534 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-03-15 20:31:20,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 20:31:20,536 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-03-15 20:31:20,539 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 20:31:20,540 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 20:31:20,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 08:31:20 BasicIcfg [2022-03-15 20:31:20,554 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 20:31:20,555 INFO L158 Benchmark]: Toolchain (without parser) took 1661.43ms. Allocated memory was 181.4MB in the beginning and 233.8MB in the end (delta: 52.4MB). Free memory was 122.5MB in the beginning and 141.5MB in the end (delta: -19.0MB). Peak memory consumption was 32.1MB. Max. memory is 8.0GB. [2022-03-15 20:31:20,555 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 181.4MB. Free memory was 141.2MB in the beginning and 141.1MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 20:31:20,556 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.92ms. Allocated memory was 181.4MB in the beginning and 233.8MB in the end (delta: 52.4MB). Free memory was 122.2MB in the beginning and 205.4MB in the end (delta: -83.2MB). Peak memory consumption was 13.2MB. Max. memory is 8.0GB. [2022-03-15 20:31:20,556 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.01ms. Allocated memory is still 233.8MB. Free memory was 205.4MB in the beginning and 204.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 20:31:20,557 INFO L158 Benchmark]: Boogie Preprocessor took 28.93ms. Allocated memory is still 233.8MB. Free memory was 204.0MB in the beginning and 202.9MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 20:31:20,557 INFO L158 Benchmark]: RCFGBuilder took 275.47ms. Allocated memory is still 233.8MB. Free memory was 202.9MB in the beginning and 193.5MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-15 20:31:20,558 INFO L158 Benchmark]: TraceAbstraction took 1116.03ms. Allocated memory is still 233.8MB. Free memory was 193.4MB in the beginning and 141.5MB in the end (delta: 51.9MB). Peak memory consumption was 52.4MB. Max. memory is 8.0GB. [2022-03-15 20:31:20,560 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 181.4MB. Free memory was 141.2MB in the beginning and 141.1MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 205.92ms. Allocated memory was 181.4MB in the beginning and 233.8MB in the end (delta: 52.4MB). Free memory was 122.2MB in the beginning and 205.4MB in the end (delta: -83.2MB). Peak memory consumption was 13.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.01ms. Allocated memory is still 233.8MB. Free memory was 205.4MB in the beginning and 204.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.93ms. Allocated memory is still 233.8MB. Free memory was 204.0MB in the beginning and 202.9MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 275.47ms. Allocated memory is still 233.8MB. Free memory was 202.9MB in the beginning and 193.5MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 1116.03ms. Allocated memory is still 233.8MB. Free memory was 193.4MB in the beginning and 141.5MB in the end (delta: 51.9MB). Peak memory consumption was 52.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.8s, 37 PlacesBefore, 12 PlacesAfterwards, 35 TransitionsBefore, 8 TransitionsAfterwards, 36 CoEnabledTransitionPairs, 4 FixpointIterations, 21 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 2 ChoiceCompositions, 31 TotalNumberOfCompositions, 41 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 41, positive: 41, positive conditional: 0, positive unconditional: 41, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 23, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 41, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 23, unknown conditional: 0, unknown unconditional: 23] , 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 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 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}, pthread_create(&th_id, NULL, foo, NULL)=-1, th_id={2:0}] [L17] COND TRUE 1 1 [L26] 0 \read(th_id) VAL [\read(th_id)=-1, \result={0:0}, n={0:0}, n={0:0}, th_id={2:0}] [L26] FCALL, JOIN 1 pthread_join(th_id, NULL) VAL [\read(th_id)=-1, \result={0:0}, n={0:0}, n={0:0}, th_id={2:0}] [L28] 0 CodeAnnotStmt[Assertion] VAL [\result={0:0}, n={0:0}, n={0:0}, th_id={2:0}] - UnprovableResult [Line: 25]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 40 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 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! [2022-03-15 20:31:20,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...