/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-FA-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/05-end-no-begin.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 14:03:16,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 14:03:16,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 14:03:16,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 14:03:16,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 14:03:16,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 14:03:16,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 14:03:16,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 14:03:16,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 14:03:16,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 14:03:16,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 14:03:16,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 14:03:16,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 14:03:16,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 14:03:16,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 14:03:16,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 14:03:16,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 14:03:16,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 14:03:16,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 14:03:16,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 14:03:16,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 14:03:16,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 14:03:16,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 14:03:16,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 14:03:16,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 14:03:16,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 14:03:16,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 14:03:16,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 14:03:16,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 14:03:16,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 14:03:16,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 14:03:16,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 14:03:16,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 14:03:16,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 14:03:16,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 14:03:16,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 14:03:16,222 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-FA-SemanticLbe.epf [2021-03-11 14:03:16,241 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 14:03:16,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 14:03:16,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 14:03:16,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 14:03:16,243 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 14:03:16,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 14:03:16,244 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 14:03:16,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 14:03:16,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 14:03:16,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 14:03:16,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 14:03:16,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 14:03:16,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 14:03:16,245 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 14:03:16,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 14:03:16,245 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 14:03:16,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 14:03:16,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 14:03:16,246 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 14:03:16,246 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 14:03:16,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 14:03:16,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 14:03:16,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 14:03:16,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 14:03:16,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 14:03:16,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 14:03:16,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 14:03:16,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 14:03:16,247 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 14:03:16,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 14:03:16,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 14:03:16,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 14:03:16,525 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 14:03:16,525 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 14:03:16,526 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/05-end-no-begin.c [2021-03-11 14:03:16,584 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79afcec0c/f812b73f22994c06adb1fa4e63bf3a00/FLAG9ce41933f [2021-03-11 14:03:17,018 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 14:03:17,019 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/05-end-no-begin.c [2021-03-11 14:03:17,019 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-11 14:03:17,047 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79afcec0c/f812b73f22994c06adb1fa4e63bf3a00/FLAG9ce41933f [2021-03-11 14:03:17,064 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79afcec0c/f812b73f22994c06adb1fa4e63bf3a00 [2021-03-11 14:03:17,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 14:03:17,074 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 14:03:17,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 14:03:17,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 14:03:17,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 14:03:17,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:03:17" (1/1) ... [2021-03-11 14:03:17,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@865f0d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:17, skipping insertion in model container [2021-03-11 14:03:17,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:03:17" (1/1) ... [2021-03-11 14:03:17,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 14:03:17,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 14:03:17,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 14:03:17,192 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 14:03:17,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 14:03:17,241 INFO L208 MainTranslator]: Completed translation [2021-03-11 14:03:17,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:17 WrapperNode [2021-03-11 14:03:17,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 14:03:17,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 14:03:17,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 14:03:17,243 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 14:03:17,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:17" (1/1) ... [2021-03-11 14:03:17,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:17" (1/1) ... [2021-03-11 14:03:17,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 14:03:17,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 14:03:17,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 14:03:17,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 14:03:17,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:17" (1/1) ... [2021-03-11 14:03:17,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:17" (1/1) ... [2021-03-11 14:03:17,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:17" (1/1) ... [2021-03-11 14:03:17,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:17" (1/1) ... [2021-03-11 14:03:17,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:17" (1/1) ... [2021-03-11 14:03:17,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:17" (1/1) ... [2021-03-11 14:03:17,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:17" (1/1) ... [2021-03-11 14:03:17,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 14:03:17,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 14:03:17,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 14:03:17,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 14:03:17,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 14:03:17,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 14:03:17,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 14:03:17,354 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-03-11 14:03:17,354 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-03-11 14:03:17,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 14:03:17,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 14:03:17,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 14:03:17,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 14:03:17,357 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 14:03:17,548 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 14:03:17,548 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-11 14:03:17,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:03:17 BoogieIcfgContainer [2021-03-11 14:03:17,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 14:03:17,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 14:03:17,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 14:03:17,553 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 14:03:17,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 02:03:17" (1/3) ... [2021-03-11 14:03:17,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9c01a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:03:17, skipping insertion in model container [2021-03-11 14:03:17,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:17" (2/3) ... [2021-03-11 14:03:17,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9c01a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:03:17, skipping insertion in model container [2021-03-11 14:03:17,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:03:17" (3/3) ... [2021-03-11 14:03:17,555 INFO L111 eAbstractionObserver]: Analyzing ICFG 05-end-no-begin.c [2021-03-11 14:03:17,576 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 14:03:17,576 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 14:03:17,579 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 14:03:17,580 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 14:03:17,625 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:17,626 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:17,626 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:17,626 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:17,626 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:17,626 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:17,626 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:17,627 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:17,627 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:17,627 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:17,627 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:17,627 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:17,629 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:17,629 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:17,629 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:17,629 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:17,633 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 14:03:17,647 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-11 14:03:17,669 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 14:03:17,669 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 14:03:17,670 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 14:03:17,670 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 14:03:17,670 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 14:03:17,670 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 14:03:17,670 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 14:03:17,670 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 14:03:17,682 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 14:03:17,696 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 27 places, 23 transitions, 51 flow [2021-03-11 14:03:17,698 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 27 places, 23 transitions, 51 flow [2021-03-11 14:03:17,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 27 places, 23 transitions, 51 flow [2021-03-11 14:03:17,736 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-03-11 14:03:17,736 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 14:03:17,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 22 events. 0/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-11 14:03:17,741 INFO L116 LiptonReduction]: Number of co-enabled transitions 72 [2021-03-11 14:03:19,005 INFO L131 LiptonReduction]: Checked pairs total: 102 [2021-03-11 14:03:19,006 INFO L133 LiptonReduction]: Total number of compositions: 16 [2021-03-11 14:03:19,014 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 12 places, 8 transitions, 21 flow [2021-03-11 14:03:19,020 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:03:19,021 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:03:19,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-03-11 14:03:19,024 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:03:19,025 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-03-11 14:03:19,026 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 14:03:19,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:03:19,030 INFO L82 PathProgramCache]: Analyzing trace with hash 2970382, now seen corresponding path program 1 times [2021-03-11 14:03:19,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:03:19,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854840044] [2021-03-11 14:03:19,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:03:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:03:19,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:03:19,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:03:19,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:03:19,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 14:03:19,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:03:19,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854840044] [2021-03-11 14:03:19,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:03:19,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 14:03:19,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299896733] [2021-03-11 14:03:19,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 14:03:19,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:03:19,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 14:03:19,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:03:19,158 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:03:19,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:03:19,179 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2021-03-11 14:03:19,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 14:03:19,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) Word has length 4 [2021-03-11 14:03:19,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:03:19,186 INFO L225 Difference]: With dead ends: 12 [2021-03-11 14:03:19,186 INFO L226 Difference]: Without dead ends: 6 [2021-03-11 14:03:19,187 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:03:19,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2021-03-11 14:03:19,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-03-11 14:03:19,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:03:19,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2021-03-11 14:03:19,208 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 4 [2021-03-11 14:03:19,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:03:19,208 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2021-03-11 14:03:19,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:03:19,209 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2021-03-11 14:03:19,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-03-11 14:03:19,209 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:03:19,209 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-03-11 14:03:19,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 14:03:19,210 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 14:03:19,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:03:19,210 INFO L82 PathProgramCache]: Analyzing trace with hash 92082238, now seen corresponding path program 1 times [2021-03-11 14:03:19,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:03:19,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192958393] [2021-03-11 14:03:19,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:03:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 14:03:19,221 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 14:03:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 14:03:19,229 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 14:03:19,241 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-11 14:03:19,241 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-03-11 14:03:19,242 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 14:03:19,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:03:19 BasicIcfg [2021-03-11 14:03:19,256 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 14:03:19,258 INFO L168 Benchmark]: Toolchain (without parser) took 2186.60 ms. Allocated memory was 255.9 MB in the beginning and 375.4 MB in the end (delta: 119.5 MB). Free memory was 234.6 MB in the beginning and 280.5 MB in the end (delta: -45.9 MB). Peak memory consumption was 73.2 MB. Max. memory is 16.0 GB. [2021-03-11 14:03:19,258 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 14:03:19,259 INFO L168 Benchmark]: CACSL2BoogieTranslator took 167.04 ms. Allocated memory was 255.9 MB in the beginning and 375.4 MB in the end (delta: 119.5 MB). Free memory was 234.0 MB in the beginning and 359.7 MB in the end (delta: -125.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-11 14:03:19,260 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.99 ms. Allocated memory is still 375.4 MB. Free memory was 359.7 MB in the beginning and 358.0 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 14:03:19,260 INFO L168 Benchmark]: Boogie Preprocessor took 17.35 ms. Allocated memory is still 375.4 MB. Free memory was 358.0 MB in the beginning and 357.1 MB in the end (delta: 877.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 14:03:19,261 INFO L168 Benchmark]: RCFGBuilder took 254.00 ms. Allocated memory is still 375.4 MB. Free memory was 357.1 MB in the beginning and 345.4 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-11 14:03:19,261 INFO L168 Benchmark]: TraceAbstraction took 1705.94 ms. Allocated memory is still 375.4 MB. Free memory was 345.4 MB in the beginning and 280.5 MB in the end (delta: 64.9 MB). Peak memory consumption was 66.7 MB. Max. memory is 16.0 GB. [2021-03-11 14:03:19,264 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 167.04 ms. Allocated memory was 255.9 MB in the beginning and 375.4 MB in the end (delta: 119.5 MB). Free memory was 234.0 MB in the beginning and 359.7 MB in the end (delta: -125.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 31.99 ms. Allocated memory is still 375.4 MB. Free memory was 359.7 MB in the beginning and 358.0 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 17.35 ms. Allocated memory is still 375.4 MB. Free memory was 358.0 MB in the beginning and 357.1 MB in the end (delta: 877.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 254.00 ms. Allocated memory is still 375.4 MB. Free memory was 357.1 MB in the beginning and 345.4 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1705.94 ms. Allocated memory is still 375.4 MB. Free memory was 345.4 MB in the beginning and 280.5 MB in the end (delta: 64.9 MB). Peak memory consumption was 66.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1307.8ms, 27 PlacesBefore, 12 PlacesAfterwards, 23 TransitionsBefore, 8 TransitionsAfterwards, 72 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 16 TotalNumberOfCompositions, 102 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 81, positive: 54, positive conditional: 0, positive unconditional: 54, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 62, positive: 45, positive conditional: 0, positive unconditional: 45, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 62, positive: 41, positive conditional: 0, positive unconditional: 41, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 21, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 151, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 128, negative conditional: 0, negative unconditional: 128, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 81, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 62, unknown conditional: 0, unknown unconditional: 62] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - CounterExampleResult [Line: 30]: assertion can be violated assertion can be violated We found a FailurePath: [L15] 0 int x = 0; [L23] 0 pthread_t threadId; [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 [L19] 1 return (void*)NULL; [L27] 0 x = x + 1 [L30] 0 CodeAnnotStmt[Assertion] VAL [\result={0:0}, arg={0:0}, arg={0:0}, x=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1575.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 4.5ms, AutomataDifference: 40.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1349.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 7 SDtfs, 0 SDslu, 1 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 9.9ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4.1ms SsaConstructionTime, 21.1ms SatisfiabilityAnalysisTime, 38.4ms InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 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...