/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/concurrent/pthreads/predecessorInAtomicBlockBug.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 07:28:03,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 07:28:03,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 07:28:03,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 07:28:03,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 07:28:03,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 07:28:03,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 07:28:03,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 07:28:03,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 07:28:03,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 07:28:03,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 07:28:03,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 07:28:03,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 07:28:03,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 07:28:03,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 07:28:03,221 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 07:28:03,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 07:28:03,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 07:28:03,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 07:28:03,231 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 07:28:03,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 07:28:03,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 07:28:03,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 07:28:03,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 07:28:03,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 07:28:03,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 07:28:03,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 07:28:03,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 07:28:03,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 07:28:03,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 07:28:03,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 07:28:03,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 07:28:03,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 07:28:03,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 07:28:03,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 07:28:03,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 07:28:03,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 07:28:03,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 07:28:03,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 07:28:03,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 07:28:03,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 07:28:03,251 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-NoLbe.epf [2020-04-18 07:28:03,265 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 07:28:03,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 07:28:03,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 07:28:03,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 07:28:03,267 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 07:28:03,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 07:28:03,268 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 07:28:03,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 07:28:03,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 07:28:03,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 07:28:03,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 07:28:03,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 07:28:03,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 07:28:03,269 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 07:28:03,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 07:28:03,269 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 07:28:03,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 07:28:03,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 07:28:03,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 07:28:03,270 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 07:28:03,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 07:28:03,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 07:28:03,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 07:28:03,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 07:28:03,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 07:28:03,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 07:28:03,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 07:28:03,272 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 07:28:03,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 07:28:03,272 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 07:28:03,562 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 07:28:03,578 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 07:28:03,581 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 07:28:03,583 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 07:28:03,583 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 07:28:03,584 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/predecessorInAtomicBlockBug.c [2020-04-18 07:28:03,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a22a1d810/17487dfbf7aa41f2ae9e998742974886/FLAG6f3ebc175 [2020-04-18 07:28:04,132 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 07:28:04,132 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/predecessorInAtomicBlockBug.c [2020-04-18 07:28:04,133 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-04-18 07:28:04,173 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a22a1d810/17487dfbf7aa41f2ae9e998742974886/FLAG6f3ebc175 [2020-04-18 07:28:04,559 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a22a1d810/17487dfbf7aa41f2ae9e998742974886 [2020-04-18 07:28:04,568 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 07:28:04,590 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 07:28:04,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 07:28:04,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 07:28:04,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 07:28:04,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:28:04" (1/1) ... [2020-04-18 07:28:04,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6931a5fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:28:04, skipping insertion in model container [2020-04-18 07:28:04,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:28:04" (1/1) ... [2020-04-18 07:28:04,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 07:28:04,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 07:28:04,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 07:28:04,918 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 07:28:04,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 07:28:04,947 INFO L208 MainTranslator]: Completed translation [2020-04-18 07:28:04,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:28:04 WrapperNode [2020-04-18 07:28:04,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 07:28:04,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 07:28:04,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 07:28:04,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 07:28:04,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:28:04" (1/1) ... [2020-04-18 07:28:04,966 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:28:04" (1/1) ... [2020-04-18 07:28:04,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 07:28:04,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 07:28:04,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 07:28:04,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 07:28:04,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:28:04" (1/1) ... [2020-04-18 07:28:04,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:28:04" (1/1) ... [2020-04-18 07:28:04,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:28:04" (1/1) ... [2020-04-18 07:28:05,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:28:04" (1/1) ... [2020-04-18 07:28:05,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:28:04" (1/1) ... [2020-04-18 07:28:05,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:28:04" (1/1) ... [2020-04-18 07:28:05,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:28:04" (1/1) ... [2020-04-18 07:28:05,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 07:28:05,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 07:28:05,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 07:28:05,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 07:28:05,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:28:04" (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 [2020-04-18 07:28:05,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 07:28:05,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 07:28:05,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 07:28:05,070 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-04-18 07:28:05,072 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-04-18 07:28:05,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 07:28:05,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 07:28:05,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 07:28:05,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 07:28:05,076 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 07:28:05,309 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 07:28:05,309 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-04-18 07:28:05,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:28:05 BoogieIcfgContainer [2020-04-18 07:28:05,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 07:28:05,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 07:28:05,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 07:28:05,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 07:28:05,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:28:04" (1/3) ... [2020-04-18 07:28:05,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cad5020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:28:05, skipping insertion in model container [2020-04-18 07:28:05,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:28:04" (2/3) ... [2020-04-18 07:28:05,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cad5020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:28:05, skipping insertion in model container [2020-04-18 07:28:05,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:28:05" (3/3) ... [2020-04-18 07:28:05,335 INFO L109 eAbstractionObserver]: Analyzing ICFG predecessorInAtomicBlockBug.c [2020-04-18 07:28:05,347 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 07:28:05,348 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 07:28:05,356 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 07:28:05,357 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 07:28:05,383 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:28:05,383 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:28:05,383 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:28:05,384 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:28:05,384 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:28:05,384 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:28:05,392 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:28:05,393 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:28:05,393 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:28:05,393 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:28:05,410 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 07:28:05,426 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:28:05,426 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:28:05,426 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:28:05,426 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:28:05,427 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:28:05,427 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:28:05,427 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:28:05,427 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:28:05,438 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 26 places, 22 transitions, 49 flow [2020-04-18 07:28:05,450 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 57 states. [2020-04-18 07:28:05,452 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2020-04-18 07:28:05,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 07:28:05,458 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:28:05,459 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:28:05,459 INFO L427 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 07:28:05,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:28:05,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1431799484, now seen corresponding path program 1 times [2020-04-18 07:28:05,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:28:05,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586227936] [2020-04-18 07:28:05,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:28:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:28:05,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:28:05,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586227936] [2020-04-18 07:28:05,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:28:05,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:28:05,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045899304] [2020-04-18 07:28:05,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 07:28:05,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:28:05,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:28:05,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:28:05,691 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 3 states. [2020-04-18 07:28:05,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:28:05,746 INFO L93 Difference]: Finished difference Result 73 states and 114 transitions. [2020-04-18 07:28:05,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 07:28:05,752 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-18 07:28:05,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:28:05,762 INFO L225 Difference]: With dead ends: 73 [2020-04-18 07:28:05,762 INFO L226 Difference]: Without dead ends: 31 [2020-04-18 07:28:05,764 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:28:05,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-04-18 07:28:05,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-04-18 07:28:05,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-04-18 07:28:05,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-04-18 07:28:05,802 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-04-18 07:28:05,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:28:05,803 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-04-18 07:28:05,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 07:28:05,803 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-04-18 07:28:05,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 07:28:05,805 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:28:05,805 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:28:05,806 INFO L427 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 07:28:05,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:28:05,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1569632429, now seen corresponding path program 1 times [2020-04-18 07:28:05,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:28:05,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011560603] [2020-04-18 07:28:05,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:28:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:28:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:28:05,856 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 07:28:05,856 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 07:28:05,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:28:05 BasicIcfg [2020-04-18 07:28:05,879 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 07:28:05,882 INFO L168 Benchmark]: Toolchain (without parser) took 1311.62 ms. Allocated memory was 146.3 MB in the beginning and 205.0 MB in the end (delta: 58.7 MB). Free memory was 102.5 MB in the beginning and 139.9 MB in the end (delta: -37.4 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-04-18 07:28:05,883 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 07:28:05,884 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.93 ms. Allocated memory was 146.3 MB in the beginning and 205.0 MB in the end (delta: 58.7 MB). Free memory was 100.5 MB in the beginning and 182.3 MB in the end (delta: -81.8 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. [2020-04-18 07:28:05,885 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.14 ms. Allocated memory is still 205.0 MB. Free memory was 182.3 MB in the beginning and 181.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 07:28:05,886 INFO L168 Benchmark]: Boogie Preprocessor took 22.35 ms. Allocated memory is still 205.0 MB. Free memory was 181.0 MB in the beginning and 179.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 07:28:05,887 INFO L168 Benchmark]: RCFGBuilder took 311.01 ms. Allocated memory is still 205.0 MB. Free memory was 179.6 MB in the beginning and 167.4 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-04-18 07:28:05,888 INFO L168 Benchmark]: TraceAbstraction took 553.68 ms. Allocated memory is still 205.0 MB. Free memory was 166.8 MB in the beginning and 139.9 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2020-04-18 07:28:05,894 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 356.93 ms. Allocated memory was 146.3 MB in the beginning and 205.0 MB in the end (delta: 58.7 MB). Free memory was 100.5 MB in the beginning and 182.3 MB in the end (delta: -81.8 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 38.14 ms. Allocated memory is still 205.0 MB. Free memory was 182.3 MB in the beginning and 181.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.35 ms. Allocated memory is still 205.0 MB. Free memory was 181.0 MB in the beginning and 179.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 311.01 ms. Allocated memory is still 205.0 MB. Free memory was 179.6 MB in the beginning and 167.4 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 553.68 ms. Allocated memory is still 205.0 MB. Free memory was 166.8 MB in the beginning and 139.9 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 19]: assertion can be violated assertion can be violated We found a FailurePath: [L16] 0 int x = 0; VAL [x=0] [L24] 0 pthread_t threadId; VAL [x=0] [L25] FCALL, FORK 0 pthread_create(&threadId, NULL, & foo, NULL) VAL [arg={0:0}, x=0] [L27] 0 x = x - 1 VAL [arg={0:0}, x=-1] [L19] 1 CodeAnnotStmt[Assertion] VAL [arg={0:0}, arg={0:0}, x=-1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 8 SDslu, 10 SDs, 0 SdLazy, 7 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 240 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...