/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/05-end-no-begin.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-12 21:44:26,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-12 21:44:26,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-12 21:44:26,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-12 21:44:26,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-12 21:44:26,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-12 21:44:26,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-12 21:44:26,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-12 21:44:26,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-12 21:44:26,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-12 21:44:26,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-12 21:44:26,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-12 21:44:26,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-12 21:44:26,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-12 21:44:26,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-12 21:44:26,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-12 21:44:26,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-12 21:44:26,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-12 21:44:26,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-12 21:44:26,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-12 21:44:26,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-12 21:44:26,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-12 21:44:26,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-12 21:44:26,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-12 21:44:26,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-12 21:44:26,620 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-12 21:44:26,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-12 21:44:26,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-12 21:44:26,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-12 21:44:26,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-12 21:44:26,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-12 21:44:26,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-12 21:44:26,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-12 21:44:26,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-12 21:44:26,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-12 21:44:26,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-12 21:44:26,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-12 21:44:26,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-12 21:44:26,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-12 21:44:26,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-12 21:44:26,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-12 21:44:26,628 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 [2021-08-12 21:44:26,657 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-12 21:44:26,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-12 21:44:26,660 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-12 21:44:26,660 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-12 21:44:26,661 INFO L138 SettingsManager]: * Use SBE=true [2021-08-12 21:44:26,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-12 21:44:26,661 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-12 21:44:26,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-12 21:44:26,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-12 21:44:26,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-12 21:44:26,662 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-12 21:44:26,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-12 21:44:26,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-12 21:44:26,662 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-12 21:44:26,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-12 21:44:26,662 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-12 21:44:26,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-12 21:44:26,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-12 21:44:26,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-12 21:44:26,663 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-12 21:44:26,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-12 21:44:26,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-12 21:44:26,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-12 21:44:26,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-12 21:44:26,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-12 21:44:26,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-12 21:44:26,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-12 21:44:26,663 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-12 21:44:26,663 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-12 21:44:26,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-12 21:44:26,664 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-12 21:44:26,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-12 21:44:26,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-12 21:44:26,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-12 21:44:26,891 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-12 21:44:26,891 INFO L275 PluginConnector]: CDTParser initialized [2021-08-12 21:44:26,892 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/05-end-no-begin.c [2021-08-12 21:44:26,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b089951c4/595bd3be32104cbf9ca6c7f469a665b2/FLAG1900dea65 [2021-08-12 21:44:27,286 INFO L306 CDTParser]: Found 1 translation units. [2021-08-12 21:44:27,286 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/05-end-no-begin.c [2021-08-12 21:44:27,286 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-08-12 21:44:27,310 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b089951c4/595bd3be32104cbf9ca6c7f469a665b2/FLAG1900dea65 [2021-08-12 21:44:27,720 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b089951c4/595bd3be32104cbf9ca6c7f469a665b2 [2021-08-12 21:44:27,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-12 21:44:27,723 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-12 21:44:27,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-12 21:44:27,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-12 21:44:27,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-12 21:44:27,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.08 09:44:27" (1/1) ... [2021-08-12 21:44:27,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b4b2877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 09:44:27, skipping insertion in model container [2021-08-12 21:44:27,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.08 09:44:27" (1/1) ... [2021-08-12 21:44:27,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-12 21:44:27,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-12 21:44:27,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-12 21:44:27,904 INFO L203 MainTranslator]: Completed pre-run [2021-08-12 21:44:27,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-12 21:44:27,922 INFO L208 MainTranslator]: Completed translation [2021-08-12 21:44:27,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 09:44:27 WrapperNode [2021-08-12 21:44:27,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-12 21:44:27,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-12 21:44:27,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-12 21:44:27,925 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-12 21:44:27,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 09:44:27" (1/1) ... [2021-08-12 21:44:27,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 09:44:27" (1/1) ... [2021-08-12 21:44:27,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-12 21:44:27,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-12 21:44:27,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-12 21:44:27,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-12 21:44:27,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 09:44:27" (1/1) ... [2021-08-12 21:44:27,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 09:44:27" (1/1) ... [2021-08-12 21:44:27,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 09:44:27" (1/1) ... [2021-08-12 21:44:27,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 09:44:27" (1/1) ... [2021-08-12 21:44:27,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 09:44:27" (1/1) ... [2021-08-12 21:44:27,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 09:44:27" (1/1) ... [2021-08-12 21:44:27,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 09:44:27" (1/1) ... [2021-08-12 21:44:27,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-12 21:44:27,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-12 21:44:27,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-12 21:44:27,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-12 21:44:27,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 09:44:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-12 21:44:28,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-12 21:44:28,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-12 21:44:28,012 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-08-12 21:44:28,012 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-08-12 21:44:28,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-12 21:44:28,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-12 21:44:28,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-12 21:44:28,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-12 21:44:28,015 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-12 21:44:28,181 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-12 21:44:28,181 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-12 21:44:28,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 09:44:28 BoogieIcfgContainer [2021-08-12 21:44:28,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-12 21:44:28,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-12 21:44:28,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-12 21:44:28,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-12 21:44:28,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.08 09:44:27" (1/3) ... [2021-08-12 21:44:28,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@690955b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 09:44:28, skipping insertion in model container [2021-08-12 21:44:28,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 09:44:27" (2/3) ... [2021-08-12 21:44:28,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@690955b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 09:44:28, skipping insertion in model container [2021-08-12 21:44:28,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 09:44:28" (3/3) ... [2021-08-12 21:44:28,186 INFO L111 eAbstractionObserver]: Analyzing ICFG 05-end-no-begin.c [2021-08-12 21:44:28,189 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-12 21:44:28,190 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-12 21:44:28,190 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-12 21:44:28,201 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:28,202 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:28,202 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:28,202 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:28,202 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:28,202 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:28,202 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:28,202 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:28,203 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:28,203 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:28,203 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:28,203 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:28,204 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:28,204 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:28,204 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:28,204 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:28,207 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-12 21:44:28,221 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-12 21:44:28,234 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 21:44:28,234 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-12 21:44:28,234 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 21:44:28,234 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 21:44:28,234 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 21:44:28,234 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 21:44:28,234 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 21:44:28,234 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 21:44:28,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 26 transitions, 57 flow [2021-08-12 21:44:28,253 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2021-08-12 21:44:28,253 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-12 21:44:28,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 25 events. 0/25 cut-off events. For 0/0 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 0. Up to 1 conditions per place. [2021-08-12 21:44:28,254 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 26 transitions, 57 flow [2021-08-12 21:44:28,257 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 20 transitions, 43 flow [2021-08-12 21:44:28,262 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-08-12 21:44:28,262 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-12 21:44:28,262 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:44:28,262 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 21:44:28,262 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:44:28,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:44:28,265 INFO L82 PathProgramCache]: Analyzing trace with hash -2098265043, now seen corresponding path program 1 times [2021-08-12 21:44:28,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:44:28,270 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549273035] [2021-08-12 21:44:28,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:44:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:44:28,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:44:28,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:44:28,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:44:28,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 21:44:28,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:44:28,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:44:28,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:44:28,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:44:28,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549273035] [2021-08-12 21:44:28,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549273035] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:44:28,383 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:44:28,383 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 21:44:28,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959575316] [2021-08-12 21:44:28,388 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 21:44:28,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:44:28,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 21:44:28,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-12 21:44:28,398 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 26 [2021-08-12 21:44:28,400 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 43 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 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) [2021-08-12 21:44:28,400 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:44:28,400 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 26 [2021-08-12 21:44:28,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:44:28,425 INFO L129 PetriNetUnfolder]: 1/29 cut-off events. [2021-08-12 21:44:28,425 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-12 21:44:28,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 29 events. 1/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 31 event pairs, 1 based on Foata normal form. 2/31 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-08-12 21:44:28,427 INFO L132 encePairwiseOnDemand]: 21/26 looper letters, 1 selfloop transitions, 4 changer transitions 2/22 dead transitions. [2021-08-12 21:44:28,427 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 22 transitions, 61 flow [2021-08-12 21:44:28,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-12 21:44:28,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-08-12 21:44:28,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2021-08-12 21:44:28,436 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8461538461538461 [2021-08-12 21:44:28,437 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 88 transitions. [2021-08-12 21:44:28,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 88 transitions. [2021-08-12 21:44:28,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:44:28,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 88 transitions. [2021-08-12 21:44:28,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:44:28,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:44:28,443 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:44:28,443 INFO L348 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2021-08-12 21:44:28,443 INFO L482 AbstractCegarLoop]: Abstraction has has 27 places, 22 transitions, 61 flow [2021-08-12 21:44:28,444 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 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) [2021-08-12 21:44:28,444 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:44:28,444 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 21:44:28,444 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-12 21:44:28,444 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:44:28,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:44:28,445 INFO L82 PathProgramCache]: Analyzing trace with hash -2092285394, now seen corresponding path program 1 times [2021-08-12 21:44:28,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:44:28,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571534082] [2021-08-12 21:44:28,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:44:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-12 21:44:28,458 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-12 21:44:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-12 21:44:28,476 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-12 21:44:28,496 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-12 21:44:28,497 INFO L651 BasicCegarLoop]: Counterexample might be feasible [2021-08-12 21:44:28,497 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-12 21:44:28,499 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-12 21:44:28,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.08 09:44:28 BasicIcfg [2021-08-12 21:44:28,522 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-12 21:44:28,524 INFO L168 Benchmark]: Toolchain (without parser) took 800.64 ms. Allocated memory is still 183.5 MB. Free memory was 146.1 MB in the beginning and 121.3 MB in the end (delta: 24.8 MB). Peak memory consumption was 25.7 MB. Max. memory is 8.0 GB. [2021-08-12 21:44:28,525 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 183.5 MB. Free memory was 164.4 MB in the beginning and 164.3 MB in the end (delta: 88.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-12 21:44:28,527 INFO L168 Benchmark]: CACSL2BoogieTranslator took 199.88 ms. Allocated memory is still 183.5 MB. Free memory was 146.0 MB in the beginning and 164.8 MB in the end (delta: -18.9 MB). Peak memory consumption was 11.0 MB. Max. memory is 8.0 GB. [2021-08-12 21:44:28,529 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.10 ms. Allocated memory is still 183.5 MB. Free memory was 164.8 MB in the beginning and 163.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-12 21:44:28,530 INFO L168 Benchmark]: Boogie Preprocessor took 16.41 ms. Allocated memory is still 183.5 MB. Free memory was 163.7 MB in the beginning and 162.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-12 21:44:28,531 INFO L168 Benchmark]: RCFGBuilder took 217.42 ms. Allocated memory is still 183.5 MB. Free memory was 162.5 MB in the beginning and 150.7 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-08-12 21:44:28,532 INFO L168 Benchmark]: TraceAbstraction took 339.90 ms. Allocated memory is still 183.5 MB. Free memory was 150.2 MB in the beginning and 121.3 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2021-08-12 21:44:28,540 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 183.5 MB. Free memory was 164.4 MB in the beginning and 164.3 MB in the end (delta: 88.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 199.88 ms. Allocated memory is still 183.5 MB. Free memory was 146.0 MB in the beginning and 164.8 MB in the end (delta: -18.9 MB). Peak memory consumption was 11.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 21.10 ms. Allocated memory is still 183.5 MB. Free memory was 164.8 MB in the beginning and 163.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 16.41 ms. Allocated memory is still 183.5 MB. Free memory was 163.7 MB in the beginning and 162.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 217.42 ms. Allocated memory is still 183.5 MB. Free memory was 162.5 MB in the beginning and 150.7 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 339.90 ms. Allocated memory is still 183.5 MB. Free memory was 150.2 MB in the beginning and 121.3 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 30]: assertion can be violated assertion can be violated We found a FailurePath: [L15] 0 int x = 0; VAL [x=0] [L23] 0 pthread_t threadId; VAL [x=0] [L24] FCALL, FORK 0 pthread_create(&threadId, NULL, &foo, NULL) VAL [arg={0:0}, x=0] [L26] 0 x = 1 VAL [arg={0:0}, x=1] [L18] 1 x = 2 VAL [arg={0:0}, arg={0:0}, x=2] [L27] 0 x = x + 1 VAL [arg={0:0}, arg={0:0}, x=3] [L30] 0 CodeAnnotStmt[Assertion] VAL [arg={0:0}, arg={0:0}, x=3] - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 33 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 267.0ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 48.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 22.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 8 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=1, InterpolantAutomatonStates: 4, 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: 5.8ms SsaConstructionTime, 22.0ms SatisfiabilityAnalysisTime, 56.4ms InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 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...