/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/mutex_lock_struct.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-11 01:04:19,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-11 01:04:19,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-11 01:04:19,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-11 01:04:19,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-11 01:04:19,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-11 01:04:19,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-11 01:04:19,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-11 01:04:19,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-11 01:04:19,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-11 01:04:19,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-11 01:04:19,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-11 01:04:19,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-11 01:04:19,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-11 01:04:19,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-11 01:04:19,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-11 01:04:19,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-11 01:04:19,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-11 01:04:19,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-11 01:04:19,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-11 01:04:19,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-11 01:04:19,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-11 01:04:19,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-11 01:04:19,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-11 01:04:19,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-11 01:04:19,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-11 01:04:19,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-11 01:04:19,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-11 01:04:19,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-11 01:04:19,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-11 01:04:19,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-11 01:04:19,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-11 01:04:19,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-11 01:04:19,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-11 01:04:19,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-11 01:04:19,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-11 01:04:19,575 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-11 01:04:19,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-11 01:04:19,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-11 01:04:19,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-11 01:04:19,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-11 01:04:19,578 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-11 01:04:19,593 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-11 01:04:19,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-11 01:04:19,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-11 01:04:19,595 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-11 01:04:19,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-11 01:04:19,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-11 01:04:19,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-11 01:04:19,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-11 01:04:19,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-11 01:04:19,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-11 01:04:19,597 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-11 01:04:19,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-11 01:04:19,597 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-11 01:04:19,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-11 01:04:19,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-11 01:04:19,598 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-11 01:04:19,598 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-11 01:04:19,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-11 01:04:19,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-11 01:04:19,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-11 01:04:19,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-11 01:04:19,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-11 01:04:19,600 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-11 01:04:19,875 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-11 01:04:19,887 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-11 01:04:19,891 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-11 01:04:19,892 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-11 01:04:19,893 INFO L275 PluginConnector]: CDTParser initialized [2020-07-11 01:04:19,893 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/mutex_lock_struct.i [2020-07-11 01:04:19,971 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f83e88c5/53af08653b9d406c9c39c13a6c169577/FLAG064b647b9 [2020-07-11 01:04:20,415 INFO L306 CDTParser]: Found 1 translation units. [2020-07-11 01:04:20,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/mutex_lock_struct.i [2020-07-11 01:04:20,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f83e88c5/53af08653b9d406c9c39c13a6c169577/FLAG064b647b9 [2020-07-11 01:04:20,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f83e88c5/53af08653b9d406c9c39c13a6c169577 [2020-07-11 01:04:20,828 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-11 01:04:20,829 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-11 01:04:20,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-11 01:04:20,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-11 01:04:20,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-11 01:04:20,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 01:04:20" (1/1) ... [2020-07-11 01:04:20,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7caa8c40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:04:20, skipping insertion in model container [2020-07-11 01:04:20,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 01:04:20" (1/1) ... [2020-07-11 01:04:20,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-11 01:04:20,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-11 01:04:21,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-11 01:04:21,043 INFO L203 MainTranslator]: Completed pre-run [2020-07-11 01:04:21,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-11 01:04:21,079 INFO L208 MainTranslator]: Completed translation [2020-07-11 01:04:21,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:04:21 WrapperNode [2020-07-11 01:04:21,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-11 01:04:21,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-11 01:04:21,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-11 01:04:21,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-11 01:04:21,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:04:21" (1/1) ... [2020-07-11 01:04:21,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:04:21" (1/1) ... [2020-07-11 01:04:21,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:04:21" (1/1) ... [2020-07-11 01:04:21,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:04:21" (1/1) ... [2020-07-11 01:04:21,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:04:21" (1/1) ... [2020-07-11 01:04:21,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:04:21" (1/1) ... [2020-07-11 01:04:21,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:04:21" (1/1) ... [2020-07-11 01:04:21,207 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-11 01:04:21,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-11 01:04:21,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-11 01:04:21,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-11 01:04:21,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:04:21" (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 [2020-07-11 01:04:21,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-11 01:04:21,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-11 01:04:21,268 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2020-07-11 01:04:21,268 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-07-11 01:04:21,268 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-07-11 01:04:21,268 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-11 01:04:21,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-11 01:04:21,269 INFO L130 BoogieDeclarations]: Found specification of procedure err [2020-07-11 01:04:21,269 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-07-11 01:04:21,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-11 01:04:21,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-11 01:04:21,269 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-07-11 01:04:21,269 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-11 01:04:21,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-11 01:04:21,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-11 01:04:21,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-11 01:04:21,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-11 01:04:21,645 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-11 01:04:21,645 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-11 01:04:21,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 01:04:21 BoogieIcfgContainer [2020-07-11 01:04:21,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-11 01:04:21,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-11 01:04:21,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-11 01:04:21,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-11 01:04:21,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 01:04:20" (1/3) ... [2020-07-11 01:04:21,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d57399e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 01:04:21, skipping insertion in model container [2020-07-11 01:04:21,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:04:21" (2/3) ... [2020-07-11 01:04:21,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d57399e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 01:04:21, skipping insertion in model container [2020-07-11 01:04:21,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 01:04:21" (3/3) ... [2020-07-11 01:04:21,664 INFO L109 eAbstractionObserver]: Analyzing ICFG mutex_lock_struct.i [2020-07-11 01:04:21,673 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-11 01:04:21,680 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-11 01:04:21,694 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-11 01:04:21,713 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-11 01:04:21,713 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-11 01:04:21,713 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-11 01:04:21,713 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-11 01:04:21,713 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-11 01:04:21,714 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-11 01:04:21,714 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-11 01:04:21,714 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-11 01:04:21,728 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-07-11 01:04:21,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-11 01:04:21,738 INFO L414 BasicCegarLoop]: Found error trace [2020-07-11 01:04:21,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-11 01:04:21,740 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-11 01:04:21,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-11 01:04:21,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1355543847, now seen corresponding path program 1 times [2020-07-11 01:04:21,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-11 01:04:21,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656937562] [2020-07-11 01:04:21,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-11 01:04:21,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 01:04:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 01:04:22,121 INFO L280 TraceCheckUtils]: 0: Hoare triple {47#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {36#true} is VALID [2020-07-11 01:04:22,122 INFO L280 TraceCheckUtils]: 1: Hoare triple {36#true} #valid := #valid[0 := 0]; {36#true} is VALID [2020-07-11 01:04:22,122 INFO L280 TraceCheckUtils]: 2: Hoare triple {36#true} assume 0 < #StackHeapBarrier; {36#true} is VALID [2020-07-11 01:04:22,123 INFO L280 TraceCheckUtils]: 3: Hoare triple {36#true} assume true; {36#true} is VALID [2020-07-11 01:04:22,123 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {36#true} {36#true} #48#return; {36#true} is VALID [2020-07-11 01:04:22,127 INFO L263 TraceCheckUtils]: 0: Hoare triple {36#true} call ULTIMATE.init(); {47#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-11 01:04:22,128 INFO L280 TraceCheckUtils]: 1: Hoare triple {47#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {36#true} is VALID [2020-07-11 01:04:22,128 INFO L280 TraceCheckUtils]: 2: Hoare triple {36#true} #valid := #valid[0 := 0]; {36#true} is VALID [2020-07-11 01:04:22,129 INFO L280 TraceCheckUtils]: 3: Hoare triple {36#true} assume 0 < #StackHeapBarrier; {36#true} is VALID [2020-07-11 01:04:22,129 INFO L280 TraceCheckUtils]: 4: Hoare triple {36#true} assume true; {36#true} is VALID [2020-07-11 01:04:22,129 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {36#true} {36#true} #48#return; {36#true} is VALID [2020-07-11 01:04:22,130 INFO L263 TraceCheckUtils]: 6: Hoare triple {36#true} call #t~ret2 := main(); {36#true} is VALID [2020-07-11 01:04:22,130 INFO L280 TraceCheckUtils]: 7: Hoare triple {36#true} SUMMARY for call ~#m~0.base, ~#m~0.offset := #Ultimate.allocOnStack(4); srcloc: mainENTRY {36#true} is VALID [2020-07-11 01:04:22,132 INFO L280 TraceCheckUtils]: 8: Hoare triple {36#true} SUMMARY for call write~int(0, ~#m~0.base, ~#m~0.offset, 4); srcloc: L33 {43#(= 0 (select (select |#memory_int| |main_~#m~0.base|) |main_~#m~0.offset|))} is VALID [2020-07-11 01:04:22,134 INFO L263 TraceCheckUtils]: 9: Hoare triple {43#(= 0 (select (select |#memory_int| |main_~#m~0.base|) |main_~#m~0.offset|))} call mutex_lock(~#m~0.base, ~#m~0.offset); {44#(= (select (select |#memory_int| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)} is VALID [2020-07-11 01:04:22,136 INFO L280 TraceCheckUtils]: 10: Hoare triple {44#(= (select (select |#memory_int| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)} ~a.base, ~a.offset := #in~a.base, #in~a.offset; {45#(= 0 (select (select |#memory_int| mutex_lock_~a.base) mutex_lock_~a.offset))} is VALID [2020-07-11 01:04:22,137 INFO L280 TraceCheckUtils]: 11: Hoare triple {45#(= 0 (select (select |#memory_int| mutex_lock_~a.base) mutex_lock_~a.offset))} SUMMARY for call #t~mem0 := read~int(~a.base, ~a.offset, 4); srcloc: L21 {46#(= 0 |mutex_lock_#t~mem0|)} is VALID [2020-07-11 01:04:22,138 INFO L280 TraceCheckUtils]: 12: Hoare triple {46#(= 0 |mutex_lock_#t~mem0|)} assume 1 == #t~mem0; {37#false} is VALID [2020-07-11 01:04:22,139 INFO L280 TraceCheckUtils]: 13: Hoare triple {37#false} havoc #t~mem0; {37#false} is VALID [2020-07-11 01:04:22,140 INFO L263 TraceCheckUtils]: 14: Hoare triple {37#false} call err(); {37#false} is VALID [2020-07-11 01:04:22,140 INFO L280 TraceCheckUtils]: 15: Hoare triple {37#false} assume !false; {37#false} is VALID [2020-07-11 01:04:22,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-11 01:04:22,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656937562] [2020-07-11 01:04:22,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-11 01:04:22,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-11 01:04:22,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519284571] [2020-07-11 01:04:22,154 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-07-11 01:04:22,158 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-11 01:04:22,162 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-11 01:04:22,197 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 01:04:22,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-11 01:04:22,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-11 01:04:22,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-11 01:04:22,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-11 01:04:22,211 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 7 states. [2020-07-11 01:04:22,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 01:04:22,751 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-07-11 01:04:22,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-11 01:04:22,751 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-07-11 01:04:22,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-11 01:04:22,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-11 01:04:22,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 58 transitions. [2020-07-11 01:04:22,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-11 01:04:22,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 58 transitions. [2020-07-11 01:04:22,769 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 58 transitions. [2020-07-11 01:04:22,856 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 58 edges. 58 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 01:04:22,868 INFO L225 Difference]: With dead ends: 53 [2020-07-11 01:04:22,868 INFO L226 Difference]: Without dead ends: 25 [2020-07-11 01:04:22,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-07-11 01:04:22,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-11 01:04:22,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-07-11 01:04:22,949 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-11 01:04:22,950 INFO L82 GeneralOperation]: Start isEquivalent. First operand 25 states. Second operand 25 states. [2020-07-11 01:04:22,951 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand 25 states. [2020-07-11 01:04:22,951 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 25 states. [2020-07-11 01:04:22,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 01:04:22,955 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2020-07-11 01:04:22,955 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2020-07-11 01:04:22,956 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-11 01:04:22,956 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-11 01:04:22,956 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand 25 states. [2020-07-11 01:04:22,957 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 25 states. [2020-07-11 01:04:22,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 01:04:22,960 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2020-07-11 01:04:22,960 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2020-07-11 01:04:22,961 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-11 01:04:22,961 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-11 01:04:22,962 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-11 01:04:22,962 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-11 01:04:22,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-11 01:04:22,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2020-07-11 01:04:22,966 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 16 [2020-07-11 01:04:22,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-11 01:04:22,967 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2020-07-11 01:04:22,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-11 01:04:22,967 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 25 states and 24 transitions. [2020-07-11 01:04:23,004 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 01:04:23,004 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2020-07-11 01:04:23,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-11 01:04:23,006 INFO L414 BasicCegarLoop]: Found error trace [2020-07-11 01:04:23,006 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-11 01:04:23,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-11 01:04:23,007 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-11 01:04:23,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-11 01:04:23,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1636243467, now seen corresponding path program 1 times [2020-07-11 01:04:23,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-11 01:04:23,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151361556] [2020-07-11 01:04:23,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-11 01:04:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-11 01:04:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-11 01:04:23,072 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-11 01:04:23,072 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-11 01:04:23,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-11 01:04:23,105 WARN L170 areAnnotationChecker]: mutex_unlockENTRY has no Hoare annotation [2020-07-11 01:04:23,105 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2020-07-11 01:04:23,105 WARN L170 areAnnotationChecker]: errENTRY has no Hoare annotation [2020-07-11 01:04:23,106 WARN L170 areAnnotationChecker]: errENTRY has no Hoare annotation [2020-07-11 01:04:23,106 WARN L170 areAnnotationChecker]: mutex_lockENTRY has no Hoare annotation [2020-07-11 01:04:23,106 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-11 01:04:23,106 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-11 01:04:23,106 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-11 01:04:23,106 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-11 01:04:23,107 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-11 01:04:23,107 WARN L170 areAnnotationChecker]: errFINAL has no Hoare annotation [2020-07-11 01:04:23,107 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2020-07-11 01:04:23,107 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-11 01:04:23,107 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-11 01:04:23,107 WARN L170 areAnnotationChecker]: L33 has no Hoare annotation [2020-07-11 01:04:23,108 WARN L170 areAnnotationChecker]: L27-1 has no Hoare annotation [2020-07-11 01:04:23,108 WARN L170 areAnnotationChecker]: L27-1 has no Hoare annotation [2020-07-11 01:04:23,108 WARN L170 areAnnotationChecker]: L-1-1 has no Hoare annotation [2020-07-11 01:04:23,108 WARN L170 areAnnotationChecker]: errEXIT has no Hoare annotation [2020-07-11 01:04:23,108 WARN L170 areAnnotationChecker]: errEXIT has no Hoare annotation [2020-07-11 01:04:23,108 WARN L170 areAnnotationChecker]: L21-1 has no Hoare annotation [2020-07-11 01:04:23,108 WARN L170 areAnnotationChecker]: L21-1 has no Hoare annotation [2020-07-11 01:04:23,109 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-11 01:04:23,109 WARN L170 areAnnotationChecker]: L34 has no Hoare annotation [2020-07-11 01:04:23,109 WARN L170 areAnnotationChecker]: L34 has no Hoare annotation [2020-07-11 01:04:23,109 WARN L170 areAnnotationChecker]: L27-2 has no Hoare annotation [2020-07-11 01:04:23,109 WARN L170 areAnnotationChecker]: L27-5 has no Hoare annotation [2020-07-11 01:04:23,109 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-11 01:04:23,109 WARN L170 areAnnotationChecker]: L27-6 has no Hoare annotation [2020-07-11 01:04:23,110 WARN L170 areAnnotationChecker]: L21-6 has no Hoare annotation [2020-07-11 01:04:23,110 WARN L170 areAnnotationChecker]: L21-2 has no Hoare annotation [2020-07-11 01:04:23,110 WARN L170 areAnnotationChecker]: L21-5 has no Hoare annotation [2020-07-11 01:04:23,110 WARN L170 areAnnotationChecker]: L36 has no Hoare annotation [2020-07-11 01:04:23,110 WARN L170 areAnnotationChecker]: L36 has no Hoare annotation [2020-07-11 01:04:23,110 WARN L170 areAnnotationChecker]: L27-3 has no Hoare annotation [2020-07-11 01:04:23,110 WARN L170 areAnnotationChecker]: L27-3 has no Hoare annotation [2020-07-11 01:04:23,111 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-11 01:04:23,111 WARN L170 areAnnotationChecker]: mutex_unlockFINAL has no Hoare annotation [2020-07-11 01:04:23,111 WARN L170 areAnnotationChecker]: mutex_lockFINAL has no Hoare annotation [2020-07-11 01:04:23,111 WARN L170 areAnnotationChecker]: L21-3 has no Hoare annotation [2020-07-11 01:04:23,111 WARN L170 areAnnotationChecker]: L21-3 has no Hoare annotation [2020-07-11 01:04:23,111 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2020-07-11 01:04:23,111 WARN L170 areAnnotationChecker]: mutex_lockEXIT has no Hoare annotation [2020-07-11 01:04:23,111 WARN L170 areAnnotationChecker]: mutex_lockEXIT has no Hoare annotation [2020-07-11 01:04:23,112 WARN L170 areAnnotationChecker]: L33-1 has no Hoare annotation [2020-07-11 01:04:23,112 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-11 01:04:23,112 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-11 01:04:23,112 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-11 01:04:23,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.07 01:04:23 BoogieIcfgContainer [2020-07-11 01:04:23,116 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-11 01:04:23,119 INFO L168 Benchmark]: Toolchain (without parser) took 2289.06 ms. Allocated memory was 145.2 MB in the beginning and 235.4 MB in the end (delta: 90.2 MB). Free memory was 103.5 MB in the beginning and 141.3 MB in the end (delta: -37.7 MB). Peak memory consumption was 52.5 MB. Max. memory is 7.1 GB. [2020-07-11 01:04:23,120 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 121.9 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-11 01:04:23,121 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.34 ms. Allocated memory is still 145.2 MB. Free memory was 103.3 MB in the beginning and 93.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-11 01:04:23,122 INFO L168 Benchmark]: Boogie Preprocessor took 127.36 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 93.1 MB in the beginning and 180.3 MB in the end (delta: -87.1 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-11 01:04:23,123 INFO L168 Benchmark]: RCFGBuilder took 442.00 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 159.9 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-07-11 01:04:23,124 INFO L168 Benchmark]: TraceAbstraction took 1465.02 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 159.9 MB in the beginning and 141.3 MB in the end (delta: 18.7 MB). Peak memory consumption was 52.2 MB. Max. memory is 7.1 GB. [2020-07-11 01:04:23,128 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 121.9 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 249.34 ms. Allocated memory is still 145.2 MB. Free memory was 103.3 MB in the beginning and 93.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.36 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 93.1 MB in the beginning and 180.3 MB in the end (delta: -87.1 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 442.00 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 159.9 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1465.02 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 159.9 MB in the beginning and 141.3 MB in the end (delta: 18.7 MB). Peak memory consumption was 52.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L33] struct mutex m; VAL [m={2:0}] [L34] m.is_locked = 0 VAL [m={2:0}] [L36] CALL mutex_lock(&m) VAL [a={2:0}] [L21] EXPR a->is_locked VAL [a={2:0}, a={2:0}, a->is_locked=0] [L21] COND FALSE !(a->is_locked == 1) VAL [a={2:0}, a={2:0}, a->is_locked=0] [L22] a->is_locked = 1 VAL [a={2:0}, a={2:0}] [L36] RET mutex_lock(&m) VAL [m={2:0}] [L40] CALL mutex_lock(&m) VAL [a={2:0}] [L21] EXPR a->is_locked VAL [a={2:0}, a={2:0}, a->is_locked=1] [L21] COND TRUE a->is_locked == 1 VAL [a={2:0}, a={2:0}, a->is_locked=1] [L21] CALL err() [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 21 SDslu, 67 SDs, 0 SdLazy, 62 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 0.2s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 660 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...