/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf -i ../../../trunk/examples/concurrent/pthreads/predecessorInAtomicBlockBug.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 02:48:54,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 02:48:54,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 02:48:54,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 02:48:54,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 02:48:54,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 02:48:54,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 02:48:54,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 02:48:54,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 02:48:54,334 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 02:48:54,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 02:48:54,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 02:48:54,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 02:48:54,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 02:48:54,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 02:48:54,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 02:48:54,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 02:48:54,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 02:48:54,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 02:48:54,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 02:48:54,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 02:48:54,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 02:48:54,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 02:48:54,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 02:48:54,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-22 02:48:54,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-22 02:48:54,372 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-22 02:48:54,375 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-22 02:48:54,375 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-22 02:48:54,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-22 02:48:54,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 02:48:54,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 02:48:54,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 02:48:54,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 02:48:54,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 02:48:54,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 02:48:54,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 02:48:54,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 02:48:54,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 02:48:54,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 02:48:54,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 02:48:54,388 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf [2020-10-22 02:48:54,432 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 02:48:54,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 02:48:54,435 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 02:48:54,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 02:48:54,435 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 02:48:54,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 02:48:54,436 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 02:48:54,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 02:48:54,437 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 02:48:54,437 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 02:48:54,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 02:48:54,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 02:48:54,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 02:48:54,439 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 02:48:54,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 02:48:54,439 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 02:48:54,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 02:48:54,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 02:48:54,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 02:48:54,440 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 02:48:54,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 02:48:54,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 02:48:54,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 02:48:54,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 02:48:54,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 02:48:54,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 02:48:54,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 02:48:54,442 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 02:48:54,442 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 02:48:54,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 02:48:54,442 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 02:48:54,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 02:48:54,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 02:48:54,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 02:48:54,769 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 02:48:54,769 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 02:48:54,770 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/predecessorInAtomicBlockBug.c [2020-10-22 02:48:54,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e1e495f5/16350d736447418ebb0d211f70b2a744/FLAG30e0181d5 [2020-10-22 02:48:55,292 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 02:48:55,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/predecessorInAtomicBlockBug.c [2020-10-22 02:48:55,293 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-22 02:48:55,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e1e495f5/16350d736447418ebb0d211f70b2a744/FLAG30e0181d5 [2020-10-22 02:48:55,659 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e1e495f5/16350d736447418ebb0d211f70b2a744 [2020-10-22 02:48:55,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 02:48:55,676 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 02:48:55,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 02:48:55,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 02:48:55,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 02:48:55,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:48:55" (1/1) ... [2020-10-22 02:48:55,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b4cca8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:48:55, skipping insertion in model container [2020-10-22 02:48:55,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:48:55" (1/1) ... [2020-10-22 02:48:55,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 02:48:55,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 02:48:56,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:48:56,023 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 02:48:56,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:48:56,062 INFO L208 MainTranslator]: Completed translation [2020-10-22 02:48:56,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:48:56 WrapperNode [2020-10-22 02:48:56,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 02:48:56,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 02:48:56,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 02:48:56,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 02:48:56,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:48:56" (1/1) ... [2020-10-22 02:48:56,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:48:56" (1/1) ... [2020-10-22 02:48:56,100 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 02:48:56,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 02:48:56,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 02:48:56,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 02:48:56,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:48:56" (1/1) ... [2020-10-22 02:48:56,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:48:56" (1/1) ... [2020-10-22 02:48:56,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:48:56" (1/1) ... [2020-10-22 02:48:56,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:48:56" (1/1) ... [2020-10-22 02:48:56,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:48:56" (1/1) ... [2020-10-22 02:48:56,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:48:56" (1/1) ... [2020-10-22 02:48:56,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:48:56" (1/1) ... [2020-10-22 02:48:56,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 02:48:56,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 02:48:56,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 02:48:56,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 02:48:56,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:48:56" (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 [2020-10-22 02:48:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 02:48:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 02:48:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 02:48:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-22 02:48:56,192 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-22 02:48:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 02:48:56,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 02:48:56,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 02:48:56,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 02:48:56,195 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 02:48:56,393 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 02:48:56,394 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-22 02:48:56,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:48:56 BoogieIcfgContainer [2020-10-22 02:48:56,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 02:48:56,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 02:48:56,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 02:48:56,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 02:48:56,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 02:48:55" (1/3) ... [2020-10-22 02:48:56,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1353d4a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:48:56, skipping insertion in model container [2020-10-22 02:48:56,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:48:56" (2/3) ... [2020-10-22 02:48:56,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1353d4a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:48:56, skipping insertion in model container [2020-10-22 02:48:56,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:48:56" (3/3) ... [2020-10-22 02:48:56,405 INFO L111 eAbstractionObserver]: Analyzing ICFG predecessorInAtomicBlockBug.c [2020-10-22 02:48:56,418 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 02:48:56,418 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 02:48:56,427 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 02:48:56,428 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 02:48:56,461 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:48:56,462 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:48:56,462 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:48:56,462 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:48:56,463 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:48:56,464 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:48:56,469 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:48:56,470 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:48:56,470 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:48:56,470 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:48:56,475 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 02:48:56,492 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-22 02:48:56,521 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 02:48:56,522 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 02:48:56,522 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 02:48:56,522 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 02:48:56,522 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 02:48:56,523 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 02:48:56,523 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 02:48:56,523 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 02:48:56,537 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 02:48:56,539 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 26 places, 22 transitions, 49 flow [2020-10-22 02:48:56,543 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 26 places, 22 transitions, 49 flow [2020-10-22 02:48:56,545 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 26 places, 22 transitions, 49 flow [2020-10-22 02:48:56,578 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2020-10-22 02:48:56,579 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-22 02:48:56,582 INFO L80 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 21 events. 0/21 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. 0/20 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2020-10-22 02:48:56,584 INFO L116 LiptonReduction]: Number of co-enabled transitions 70 [2020-10-22 02:48:57,038 INFO L131 LiptonReduction]: Checked pairs total: 74 [2020-10-22 02:48:57,039 INFO L133 LiptonReduction]: Total number of compositions: 16 [2020-10-22 02:48:57,047 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 11 places, 7 transitions, 19 flow [2020-10-22 02:48:57,057 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 11 states. [2020-10-22 02:48:57,060 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-10-22 02:48:57,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-22 02:48:57,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:48:57,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-22 02:48:57,068 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 02:48:57,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:48:57,075 INFO L82 PathProgramCache]: Analyzing trace with hash 94820, now seen corresponding path program 1 times [2020-10-22 02:48:57,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:48:57,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346962425] [2020-10-22 02:48:57,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:48:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:48:57,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:48:57,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346962425] [2020-10-22 02:48:57,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:48:57,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 02:48:57,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [130028050] [2020-10-22 02:48:57,269 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:48:57,272 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:48:57,287 INFO L252 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-10-22 02:48:57,287 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:48:57,293 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:48:57,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:48:57,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:48:57,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:48:57,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:48:57,315 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2020-10-22 02:48:57,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:48:57,338 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-10-22 02:48:57,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:48:57,340 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-22 02:48:57,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:48:57,349 INFO L225 Difference]: With dead ends: 12 [2020-10-22 02:48:57,350 INFO L226 Difference]: Without dead ends: 7 [2020-10-22 02:48:57,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:48:57,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-10-22 02:48:57,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-10-22 02:48:57,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-22 02:48:57,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2020-10-22 02:48:57,390 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 3 [2020-10-22 02:48:57,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:48:57,390 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2020-10-22 02:48:57,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:48:57,391 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2020-10-22 02:48:57,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-22 02:48:57,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:48:57,392 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-22 02:48:57,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 02:48:57,393 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 02:48:57,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:48:57,393 INFO L82 PathProgramCache]: Analyzing trace with hash 2939628, now seen corresponding path program 1 times [2020-10-22 02:48:57,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:48:57,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202383678] [2020-10-22 02:48:57,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:48:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 02:48:57,413 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 02:48:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 02:48:57,424 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 02:48:57,446 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-22 02:48:57,447 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-22 02:48:57,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 02:48:57,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 02:48:57 BasicIcfg [2020-10-22 02:48:57,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 02:48:57,473 INFO L168 Benchmark]: Toolchain (without parser) took 1800.14 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 101.2 MB in the beginning and 96.0 MB in the end (delta: 5.2 MB). Peak memory consumption was 68.6 MB. Max. memory is 7.1 GB. [2020-10-22 02:48:57,474 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-22 02:48:57,475 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.74 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 100.1 MB in the beginning and 181.1 MB in the end (delta: -81.0 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-10-22 02:48:57,477 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.08 ms. Allocated memory is still 204.5 MB. Free memory was 181.1 MB in the beginning and 179.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-22 02:48:57,477 INFO L168 Benchmark]: Boogie Preprocessor took 21.96 ms. Allocated memory is still 204.5 MB. Free memory was 179.2 MB in the beginning and 178.3 MB in the end (delta: 966.7 kB). Peak memory consumption was 966.7 kB. Max. memory is 7.1 GB. [2020-10-22 02:48:57,478 INFO L168 Benchmark]: RCFGBuilder took 273.76 ms. Allocated memory is still 204.5 MB. Free memory was 178.3 MB in the beginning and 165.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-10-22 02:48:57,479 INFO L168 Benchmark]: TraceAbstraction took 1072.36 ms. Allocated memory is still 204.5 MB. Free memory was 165.2 MB in the beginning and 96.0 MB in the end (delta: 69.2 MB). Peak memory consumption was 69.2 MB. Max. memory is 7.1 GB. [2020-10-22 02:48:57,484 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 385.74 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 100.1 MB in the beginning and 181.1 MB in the end (delta: -81.0 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 36.08 ms. Allocated memory is still 204.5 MB. Free memory was 181.1 MB in the beginning and 179.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.96 ms. Allocated memory is still 204.5 MB. Free memory was 179.2 MB in the beginning and 178.3 MB in the end (delta: 966.7 kB). Peak memory consumption was 966.7 kB. Max. memory is 7.1 GB. * RCFGBuilder took 273.76 ms. Allocated memory is still 204.5 MB. Free memory was 178.3 MB in the beginning and 165.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1072.36 ms. Allocated memory is still 204.5 MB. Free memory was 165.2 MB in the beginning and 96.0 MB in the end (delta: 69.2 MB). Peak memory consumption was 69.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 33 VarBasedMoverChecksPositive, 6 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 2 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.4s, 26 PlacesBefore, 11 PlacesAfterwards, 22 TransitionsBefore, 7 TransitionsAfterwards, 70 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 16 TotalNumberOfCompositions, 74 MoverChecksTotal - CounterExampleResult [Line: 19]: assertion can be violated assertion can be violated We found a FailurePath: [L16] 0 int x = 0; [L24] 0 pthread_t threadId; [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: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 4 SDtfs, 1 SDslu, 0 SDs, 0 SdLazy, 7 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 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...