/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 0.1.25-267fbe0 [2020-07-18 05:11:27,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 05:11:27,604 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 05:11:27,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 05:11:27,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 05:11:27,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 05:11:27,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 05:11:27,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 05:11:27,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 05:11:27,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 05:11:27,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 05:11:27,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 05:11:27,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 05:11:27,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 05:11:27,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 05:11:27,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 05:11:27,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 05:11:27,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 05:11:27,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 05:11:27,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 05:11:27,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 05:11:27,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 05:11:27,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 05:11:27,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 05:11:27,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-18 05:11:27,642 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-18 05:11:27,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-18 05:11:27,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-18 05:11:27,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-18 05:11:27,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-18 05:11:27,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-18 05:11:27,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-18 05:11:27,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-18 05:11:27,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-18 05:11:27,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-18 05:11:27,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-18 05:11:27,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-18 05:11:27,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-18 05:11:27,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 05:11:27,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 05:11:27,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 05:11:27,652 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-18 05:11:27,660 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 05:11:27,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 05:11:27,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 05:11:27,662 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 05:11:27,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 05:11:27,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 05:11:27,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 05:11:27,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 05:11:27,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 05:11:27,663 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 05:11:27,664 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 05:11:27,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 05:11:27,664 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 05:11:27,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 05:11:27,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 05:11:27,665 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 05:11:27,665 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 05:11:27,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 05:11:27,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 05:11:27,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 05:11:27,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 05:11:27,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 05:11:27,666 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 [2020-07-18 05:11:27,972 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 05:11:27,985 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 05:11:27,989 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 05:11:27,990 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 05:11:27,991 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 05:11:27,991 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/mutex_lock_struct.i [2020-07-18 05:11:28,065 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d1def79b/574ba5e09ae64b71a7ba3bb7bf414015/FLAG3f5a2179f [2020-07-18 05:11:28,533 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 05:11:28,533 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/mutex_lock_struct.i [2020-07-18 05:11:28,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d1def79b/574ba5e09ae64b71a7ba3bb7bf414015/FLAG3f5a2179f [2020-07-18 05:11:28,912 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d1def79b/574ba5e09ae64b71a7ba3bb7bf414015 [2020-07-18 05:11:28,922 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 05:11:28,925 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 05:11:28,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 05:11:28,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 05:11:28,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 05:11:28,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 05:11:28" (1/1) ... [2020-07-18 05:11:28,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21d177b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:11:28, skipping insertion in model container [2020-07-18 05:11:28,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 05:11:28" (1/1) ... [2020-07-18 05:11:28,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 05:11:28,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 05:11:29,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 05:11:29,150 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 05:11:29,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 05:11:29,185 INFO L208 MainTranslator]: Completed translation [2020-07-18 05:11:29,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:11:29 WrapperNode [2020-07-18 05:11:29,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 05:11:29,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 05:11:29,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 05:11:29,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 05:11:29,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:11:29" (1/1) ... [2020-07-18 05:11:29,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:11:29" (1/1) ... [2020-07-18 05:11:29,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:11:29" (1/1) ... [2020-07-18 05:11:29,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:11:29" (1/1) ... [2020-07-18 05:11:29,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:11:29" (1/1) ... [2020-07-18 05:11:29,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:11:29" (1/1) ... [2020-07-18 05:11:29,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:11:29" (1/1) ... [2020-07-18 05:11:29,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 05:11:29,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 05:11:29,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 05:11:29,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 05:11:29,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:11:29" (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 [2020-07-18 05:11:29,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 05:11:29,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 05:11:29,379 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2020-07-18 05:11:29,380 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-07-18 05:11:29,380 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-07-18 05:11:29,380 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 05:11:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 05:11:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure err [2020-07-18 05:11:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-07-18 05:11:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-18 05:11:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-18 05:11:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-07-18 05:11:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 05:11:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-18 05:11:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-18 05:11:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 05:11:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 05:11:29,711 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 05:11:29,712 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-18 05:11:29,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 05:11:29 BoogieIcfgContainer [2020-07-18 05:11:29,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 05:11:29,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 05:11:29,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 05:11:29,721 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 05:11:29,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 05:11:28" (1/3) ... [2020-07-18 05:11:29,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@253d726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 05:11:29, skipping insertion in model container [2020-07-18 05:11:29,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:11:29" (2/3) ... [2020-07-18 05:11:29,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@253d726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 05:11:29, skipping insertion in model container [2020-07-18 05:11:29,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 05:11:29" (3/3) ... [2020-07-18 05:11:29,725 INFO L109 eAbstractionObserver]: Analyzing ICFG mutex_lock_struct.i [2020-07-18 05:11:29,735 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 05:11:29,743 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 05:11:29,758 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 05:11:29,781 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 05:11:29,781 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 05:11:29,781 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-18 05:11:29,781 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 05:11:29,781 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 05:11:29,782 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 05:11:29,782 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 05:11:29,782 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 05:11:29,798 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-07-18 05:11:29,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-18 05:11:29,809 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 05:11:29,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 05:11:29,811 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 05:11:29,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 05:11:29,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1355543847, now seen corresponding path program 1 times [2020-07-18 05:11:29,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 05:11:29,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564591086] [2020-07-18 05:11:29,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 05:11:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:11:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:11:30,140 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 [2020-07-18 05:11:30,141 INFO L280 TraceCheckUtils]: 1: Hoare triple {36#true} #valid := #valid[0 := 0]; {36#true} is VALID [2020-07-18 05:11:30,141 INFO L280 TraceCheckUtils]: 2: Hoare triple {36#true} assume 0 < #StackHeapBarrier; {36#true} is VALID [2020-07-18 05:11:30,142 INFO L280 TraceCheckUtils]: 3: Hoare triple {36#true} assume true; {36#true} is VALID [2020-07-18 05:11:30,142 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {36#true} {36#true} #48#return; {36#true} is VALID [2020-07-18 05:11:30,146 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 [2020-07-18 05:11:30,147 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 [2020-07-18 05:11:30,147 INFO L280 TraceCheckUtils]: 2: Hoare triple {36#true} #valid := #valid[0 := 0]; {36#true} is VALID [2020-07-18 05:11:30,147 INFO L280 TraceCheckUtils]: 3: Hoare triple {36#true} assume 0 < #StackHeapBarrier; {36#true} is VALID [2020-07-18 05:11:30,148 INFO L280 TraceCheckUtils]: 4: Hoare triple {36#true} assume true; {36#true} is VALID [2020-07-18 05:11:30,148 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {36#true} {36#true} #48#return; {36#true} is VALID [2020-07-18 05:11:30,149 INFO L263 TraceCheckUtils]: 6: Hoare triple {36#true} call #t~ret2 := main(); {36#true} is VALID [2020-07-18 05:11:30,149 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 [2020-07-18 05:11:30,151 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 [2020-07-18 05:11:30,153 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 [2020-07-18 05:11:30,154 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 [2020-07-18 05:11:30,155 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 [2020-07-18 05:11:30,157 INFO L280 TraceCheckUtils]: 12: Hoare triple {46#(= 0 |mutex_lock_#t~mem0|)} assume 1 == #t~mem0; {37#false} is VALID [2020-07-18 05:11:30,157 INFO L280 TraceCheckUtils]: 13: Hoare triple {37#false} havoc #t~mem0; {37#false} is VALID [2020-07-18 05:11:30,158 INFO L263 TraceCheckUtils]: 14: Hoare triple {37#false} call err(); {37#false} is VALID [2020-07-18 05:11:30,158 INFO L280 TraceCheckUtils]: 15: Hoare triple {37#false} assume !false; {37#false} is VALID [2020-07-18 05:11:30,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 05:11:30,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564591086] [2020-07-18 05:11:30,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 05:11:30,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-18 05:11:30,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538359628] [2020-07-18 05:11:30,172 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-07-18 05:11:30,175 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 05:11:30,179 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-18 05:11:30,211 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:11:30,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-18 05:11:30,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 05:11:30,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-18 05:11:30,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-18 05:11:30,225 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 7 states. [2020-07-18 05:11:30,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:11:30,763 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-07-18 05:11:30,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-18 05:11:30,764 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-07-18 05:11:30,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 05:11:30,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-18 05:11:30,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 58 transitions. [2020-07-18 05:11:30,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-18 05:11:30,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 58 transitions. [2020-07-18 05:11:30,782 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 58 transitions. [2020-07-18 05:11:30,871 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 58 edges. 58 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:11:30,884 INFO L225 Difference]: With dead ends: 53 [2020-07-18 05:11:30,884 INFO L226 Difference]: Without dead ends: 25 [2020-07-18 05:11:30,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-07-18 05:11:30,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-18 05:11:30,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-07-18 05:11:30,975 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 05:11:30,976 INFO L82 GeneralOperation]: Start isEquivalent. First operand 25 states. Second operand 25 states. [2020-07-18 05:11:30,977 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand 25 states. [2020-07-18 05:11:30,977 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 25 states. [2020-07-18 05:11:30,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:11:30,982 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2020-07-18 05:11:30,982 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2020-07-18 05:11:30,983 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:11:30,983 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:11:30,983 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand 25 states. [2020-07-18 05:11:30,983 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 25 states. [2020-07-18 05:11:30,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:11:30,987 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2020-07-18 05:11:30,987 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2020-07-18 05:11:30,988 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:11:30,988 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:11:30,988 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 05:11:30,989 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 05:11:30,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-18 05:11:30,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2020-07-18 05:11:30,993 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 16 [2020-07-18 05:11:30,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 05:11:30,994 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2020-07-18 05:11:30,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-18 05:11:30,994 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 25 states and 24 transitions. [2020-07-18 05:11:31,028 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:11:31,028 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2020-07-18 05:11:31,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-18 05:11:31,029 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 05:11:31,030 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] [2020-07-18 05:11:31,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 05:11:31,030 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 05:11:31,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 05:11:31,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1636243467, now seen corresponding path program 1 times [2020-07-18 05:11:31,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 05:11:31,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708615783] [2020-07-18 05:11:31,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 05:11:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-18 05:11:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-18 05:11:31,113 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-18 05:11:31,114 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-18 05:11:31,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 05:11:31,147 WARN L170 areAnnotationChecker]: mutex_unlockENTRY has no Hoare annotation [2020-07-18 05:11:31,147 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2020-07-18 05:11:31,147 WARN L170 areAnnotationChecker]: errENTRY has no Hoare annotation [2020-07-18 05:11:31,147 WARN L170 areAnnotationChecker]: errENTRY has no Hoare annotation [2020-07-18 05:11:31,148 WARN L170 areAnnotationChecker]: mutex_lockENTRY has no Hoare annotation [2020-07-18 05:11:31,148 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 05:11:31,148 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 05:11:31,148 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-18 05:11:31,148 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-18 05:11:31,148 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 05:11:31,149 WARN L170 areAnnotationChecker]: errFINAL has no Hoare annotation [2020-07-18 05:11:31,149 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2020-07-18 05:11:31,149 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 05:11:31,149 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 05:11:31,149 WARN L170 areAnnotationChecker]: L33 has no Hoare annotation [2020-07-18 05:11:31,149 WARN L170 areAnnotationChecker]: L27-1 has no Hoare annotation [2020-07-18 05:11:31,149 WARN L170 areAnnotationChecker]: L27-1 has no Hoare annotation [2020-07-18 05:11:31,150 WARN L170 areAnnotationChecker]: L-1-1 has no Hoare annotation [2020-07-18 05:11:31,150 WARN L170 areAnnotationChecker]: errEXIT has no Hoare annotation [2020-07-18 05:11:31,150 WARN L170 areAnnotationChecker]: errEXIT has no Hoare annotation [2020-07-18 05:11:31,150 WARN L170 areAnnotationChecker]: L21-1 has no Hoare annotation [2020-07-18 05:11:31,150 WARN L170 areAnnotationChecker]: L21-1 has no Hoare annotation [2020-07-18 05:11:31,150 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-18 05:11:31,150 WARN L170 areAnnotationChecker]: L34 has no Hoare annotation [2020-07-18 05:11:31,151 WARN L170 areAnnotationChecker]: L34 has no Hoare annotation [2020-07-18 05:11:31,151 WARN L170 areAnnotationChecker]: L27-2 has no Hoare annotation [2020-07-18 05:11:31,151 WARN L170 areAnnotationChecker]: L27-5 has no Hoare annotation [2020-07-18 05:11:31,151 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-18 05:11:31,151 WARN L170 areAnnotationChecker]: L27-6 has no Hoare annotation [2020-07-18 05:11:31,151 WARN L170 areAnnotationChecker]: L21-6 has no Hoare annotation [2020-07-18 05:11:31,151 WARN L170 areAnnotationChecker]: L21-2 has no Hoare annotation [2020-07-18 05:11:31,152 WARN L170 areAnnotationChecker]: L21-5 has no Hoare annotation [2020-07-18 05:11:31,152 WARN L170 areAnnotationChecker]: L36 has no Hoare annotation [2020-07-18 05:11:31,152 WARN L170 areAnnotationChecker]: L36 has no Hoare annotation [2020-07-18 05:11:31,152 WARN L170 areAnnotationChecker]: L27-3 has no Hoare annotation [2020-07-18 05:11:31,152 WARN L170 areAnnotationChecker]: L27-3 has no Hoare annotation [2020-07-18 05:11:31,152 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-18 05:11:31,152 WARN L170 areAnnotationChecker]: mutex_unlockFINAL has no Hoare annotation [2020-07-18 05:11:31,152 WARN L170 areAnnotationChecker]: mutex_lockFINAL has no Hoare annotation [2020-07-18 05:11:31,153 WARN L170 areAnnotationChecker]: L21-3 has no Hoare annotation [2020-07-18 05:11:31,153 WARN L170 areAnnotationChecker]: L21-3 has no Hoare annotation [2020-07-18 05:11:31,153 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2020-07-18 05:11:31,153 WARN L170 areAnnotationChecker]: mutex_lockEXIT has no Hoare annotation [2020-07-18 05:11:31,153 WARN L170 areAnnotationChecker]: mutex_lockEXIT has no Hoare annotation [2020-07-18 05:11:31,153 WARN L170 areAnnotationChecker]: L33-1 has no Hoare annotation [2020-07-18 05:11:31,153 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-18 05:11:31,154 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-18 05:11:31,154 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. [2020-07-18 05:11:31,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.07 05:11:31 BoogieIcfgContainer [2020-07-18 05:11:31,157 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-18 05:11:31,161 INFO L168 Benchmark]: Toolchain (without parser) took 2236.42 ms. Allocated memory was 137.4 MB in the beginning and 233.8 MB in the end (delta: 96.5 MB). Free memory was 102.7 MB in the beginning and 141.5 MB in the end (delta: -38.7 MB). Peak memory consumption was 57.7 MB. Max. memory is 7.1 GB. [2020-07-18 05:11:31,162 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.4 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-18 05:11:31,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.66 ms. Allocated memory is still 137.4 MB. Free memory was 102.3 MB in the beginning and 92.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-18 05:11:31,164 INFO L168 Benchmark]: Boogie Preprocessor took 127.85 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 92.2 MB in the beginning and 180.9 MB in the end (delta: -88.7 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2020-07-18 05:11:31,165 INFO L168 Benchmark]: RCFGBuilder took 401.58 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 160.9 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-07-18 05:11:31,166 INFO L168 Benchmark]: TraceAbstraction took 1440.10 ms. Allocated memory was 202.4 MB in the beginning and 233.8 MB in the end (delta: 31.5 MB). Free memory was 160.3 MB in the beginning and 141.5 MB in the end (delta: 18.8 MB). Peak memory consumption was 50.3 MB. Max. memory is 7.1 GB. [2020-07-18 05:11:31,170 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 137.4 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 259.66 ms. Allocated memory is still 137.4 MB. Free memory was 102.3 MB in the beginning and 92.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.85 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 92.2 MB in the beginning and 180.9 MB in the end (delta: -88.7 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 401.58 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 160.9 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1440.10 ms. Allocated memory was 202.4 MB in the beginning and 233.8 MB in the end (delta: 31.5 MB). Free memory was 160.3 MB in the beginning and 141.5 MB in the end (delta: 18.8 MB). Peak memory consumption was 50.3 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, 0.1s 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...