/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/mutex_lock_int.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 00:20:28,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 00:20:28,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 00:20:28,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 00:20:28,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 00:20:28,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 00:20:28,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 00:20:28,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 00:20:28,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 00:20:28,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 00:20:28,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 00:20:28,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 00:20:28,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 00:20:28,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 00:20:28,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 00:20:28,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 00:20:28,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 00:20:28,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 00:20:28,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 00:20:28,924 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 00:20:28,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 00:20:28,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 00:20:28,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 00:20:28,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 00:20:28,937 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-18 00:20:28,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-18 00:20:28,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-18 00:20:28,940 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-18 00:20:28,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-18 00:20:28,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-18 00:20:28,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-18 00:20:28,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-18 00:20:28,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-18 00:20:28,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-18 00:20:28,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-18 00:20:28,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-18 00:20:28,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-18 00:20:28,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-18 00:20:28,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 00:20:28,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 00:20:28,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 00:20:28,954 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 00:20:28,966 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 00:20:28,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 00:20:28,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 00:20:28,969 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 00:20:28,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 00:20:28,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 00:20:28,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 00:20:28,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 00:20:28,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 00:20:28,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 00:20:28,971 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 00:20:28,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 00:20:28,972 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 00:20:28,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 00:20:28,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 00:20:28,973 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 00:20:28,973 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 00:20:28,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 00:20:28,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:20:28,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 00:20:28,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 00:20:28,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 00:20:28,974 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-18 00:20:29,287 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 00:20:29,303 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 00:20:29,307 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 00:20:29,309 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 00:20:29,309 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 00:20:29,310 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/mutex_lock_int.c_1.i [2020-07-18 00:20:29,378 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7512e8b43/b1ae1bbc45974eb096a6c7bb5784eb1b/FLAGf07febe17 [2020-07-18 00:20:29,855 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 00:20:29,855 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/mutex_lock_int.c_1.i [2020-07-18 00:20:29,862 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7512e8b43/b1ae1bbc45974eb096a6c7bb5784eb1b/FLAGf07febe17 [2020-07-18 00:20:30,269 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7512e8b43/b1ae1bbc45974eb096a6c7bb5784eb1b [2020-07-18 00:20:30,280 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 00:20:30,283 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 00:20:30,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 00:20:30,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 00:20:30,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 00:20:30,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:20:30" (1/1) ... [2020-07-18 00:20:30,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3297cb6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:20:30, skipping insertion in model container [2020-07-18 00:20:30,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:20:30" (1/1) ... [2020-07-18 00:20:30,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 00:20:30,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 00:20:30,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:20:30,520 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 00:20:30,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:20:30,563 INFO L208 MainTranslator]: Completed translation [2020-07-18 00:20:30,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:20:30 WrapperNode [2020-07-18 00:20:30,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 00:20:30,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 00:20:30,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 00:20:30,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 00:20:30,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:20:30" (1/1) ... [2020-07-18 00:20:30,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:20:30" (1/1) ... [2020-07-18 00:20:30,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:20:30" (1/1) ... [2020-07-18 00:20:30,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:20:30" (1/1) ... [2020-07-18 00:20:30,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:20:30" (1/1) ... [2020-07-18 00:20:30,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:20:30" (1/1) ... [2020-07-18 00:20:30,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:20:30" (1/1) ... [2020-07-18 00:20:30,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 00:20:30,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 00:20:30,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 00:20:30,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 00:20:30,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:20:30" (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 00:20:30,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 00:20:30,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 00:20:30,756 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2020-07-18 00:20:30,756 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-07-18 00:20:30,756 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-07-18 00:20:30,756 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 00:20:30,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 00:20:30,757 INFO L130 BoogieDeclarations]: Found specification of procedure err [2020-07-18 00:20:30,757 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-07-18 00:20:30,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-18 00:20:30,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-18 00:20:30,757 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-07-18 00:20:30,757 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 00:20:30,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-18 00:20:30,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-18 00:20:30,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 00:20:30,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 00:20:31,021 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 00:20:31,021 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-18 00:20:31,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:20:31 BoogieIcfgContainer [2020-07-18 00:20:31,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 00:20:31,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 00:20:31,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 00:20:31,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 00:20:31,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:20:30" (1/3) ... [2020-07-18 00:20:31,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a340e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:20:31, skipping insertion in model container [2020-07-18 00:20:31,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:20:30" (2/3) ... [2020-07-18 00:20:31,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a340e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:20:31, skipping insertion in model container [2020-07-18 00:20:31,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:20:31" (3/3) ... [2020-07-18 00:20:31,036 INFO L109 eAbstractionObserver]: Analyzing ICFG mutex_lock_int.c_1.i [2020-07-18 00:20:31,047 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 00:20:31,055 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 00:20:31,071 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 00:20:31,094 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 00:20:31,095 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 00:20:31,095 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-18 00:20:31,095 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 00:20:31,096 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 00:20:31,096 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 00:20:31,096 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 00:20:31,096 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 00:20:31,113 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-07-18 00:20:31,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-18 00:20:31,124 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:20:31,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:20:31,125 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:20:31,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:20:31,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1355543847, now seen corresponding path program 1 times [2020-07-18 00:20:31,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:20:31,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164983959] [2020-07-18 00:20:31,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:20:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:20:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:20:31,475 INFO L280 TraceCheckUtils]: 0: Hoare triple {53#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {42#true} is VALID [2020-07-18 00:20:31,476 INFO L280 TraceCheckUtils]: 1: Hoare triple {42#true} #valid := #valid[0 := 0]; {42#true} is VALID [2020-07-18 00:20:31,477 INFO L280 TraceCheckUtils]: 2: Hoare triple {42#true} assume 0 < #StackHeapBarrier; {42#true} is VALID [2020-07-18 00:20:31,477 INFO L280 TraceCheckUtils]: 3: Hoare triple {42#true} assume true; {42#true} is VALID [2020-07-18 00:20:31,478 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {42#true} {42#true} #48#return; {42#true} is VALID [2020-07-18 00:20:31,482 INFO L263 TraceCheckUtils]: 0: Hoare triple {42#true} call ULTIMATE.init(); {53#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 00:20:31,483 INFO L280 TraceCheckUtils]: 1: Hoare triple {53#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {42#true} is VALID [2020-07-18 00:20:31,483 INFO L280 TraceCheckUtils]: 2: Hoare triple {42#true} #valid := #valid[0 := 0]; {42#true} is VALID [2020-07-18 00:20:31,484 INFO L280 TraceCheckUtils]: 3: Hoare triple {42#true} assume 0 < #StackHeapBarrier; {42#true} is VALID [2020-07-18 00:20:31,484 INFO L280 TraceCheckUtils]: 4: Hoare triple {42#true} assume true; {42#true} is VALID [2020-07-18 00:20:31,485 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {42#true} {42#true} #48#return; {42#true} is VALID [2020-07-18 00:20:31,485 INFO L263 TraceCheckUtils]: 6: Hoare triple {42#true} call #t~ret2 := main(); {42#true} is VALID [2020-07-18 00:20:31,486 INFO L280 TraceCheckUtils]: 7: Hoare triple {42#true} SUMMARY for call ~#m~0.base, ~#m~0.offset := #Ultimate.allocOnStack(4); srcloc: mainENTRY {42#true} is VALID [2020-07-18 00:20:31,487 INFO L280 TraceCheckUtils]: 8: Hoare triple {42#true} SUMMARY for call write~int(0, ~#m~0.base, ~#m~0.offset, 4); srcloc: L30 {49#(= 0 (select (select |#memory_int| |main_~#m~0.base|) |main_~#m~0.offset|))} is VALID [2020-07-18 00:20:31,490 INFO L263 TraceCheckUtils]: 9: Hoare triple {49#(= 0 (select (select |#memory_int| |main_~#m~0.base|) |main_~#m~0.offset|))} call mutex_lock(~#m~0.base, ~#m~0.offset); {50#(= (select (select |#memory_int| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)} is VALID [2020-07-18 00:20:31,491 INFO L280 TraceCheckUtils]: 10: Hoare triple {50#(= (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; {51#(= 0 (select (select |#memory_int| mutex_lock_~a.base) mutex_lock_~a.offset))} is VALID [2020-07-18 00:20:31,493 INFO L280 TraceCheckUtils]: 11: Hoare triple {51#(= 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: L18 {52#(= 0 |mutex_lock_#t~mem0|)} is VALID [2020-07-18 00:20:31,494 INFO L280 TraceCheckUtils]: 12: Hoare triple {52#(= 0 |mutex_lock_#t~mem0|)} assume 1 == #t~mem0; {43#false} is VALID [2020-07-18 00:20:31,495 INFO L280 TraceCheckUtils]: 13: Hoare triple {43#false} havoc #t~mem0; {43#false} is VALID [2020-07-18 00:20:31,495 INFO L263 TraceCheckUtils]: 14: Hoare triple {43#false} call err(); {43#false} is VALID [2020-07-18 00:20:31,496 INFO L280 TraceCheckUtils]: 15: Hoare triple {43#false} assume !false; {43#false} is VALID [2020-07-18 00:20:31,499 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 00:20:31,508 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:20:31,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164983959] [2020-07-18 00:20:31,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:20:31,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-18 00:20:31,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994995996] [2020-07-18 00:20:31,521 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-07-18 00:20:31,524 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:20:31,528 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-18 00:20:31,561 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 00:20:31,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-18 00:20:31,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:20:31,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-18 00:20:31,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-18 00:20:31,574 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 7 states. [2020-07-18 00:20:32,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:20:32,290 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2020-07-18 00:20:32,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-18 00:20:32,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-07-18 00:20:32,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:20:32,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-18 00:20:32,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 64 transitions. [2020-07-18 00:20:32,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-18 00:20:32,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 64 transitions. [2020-07-18 00:20:32,311 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 64 transitions. [2020-07-18 00:20:32,398 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 64 edges. 64 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:20:32,410 INFO L225 Difference]: With dead ends: 60 [2020-07-18 00:20:32,411 INFO L226 Difference]: Without dead ends: 25 [2020-07-18 00:20:32,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 1 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 00:20:32,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-18 00:20:32,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-07-18 00:20:32,493 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:20:32,494 INFO L82 GeneralOperation]: Start isEquivalent. First operand 25 states. Second operand 25 states. [2020-07-18 00:20:32,494 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand 25 states. [2020-07-18 00:20:32,494 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 25 states. [2020-07-18 00:20:32,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:20:32,498 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2020-07-18 00:20:32,499 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2020-07-18 00:20:32,499 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:20:32,499 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:20:32,500 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand 25 states. [2020-07-18 00:20:32,500 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 25 states. [2020-07-18 00:20:32,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:20:32,504 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2020-07-18 00:20:32,504 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2020-07-18 00:20:32,505 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:20:32,505 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:20:32,505 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:20:32,505 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:20:32,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-18 00:20:32,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2020-07-18 00:20:32,510 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 16 [2020-07-18 00:20:32,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:20:32,511 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2020-07-18 00:20:32,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-18 00:20:32,511 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 25 states and 24 transitions. [2020-07-18 00:20:32,545 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 00:20:32,546 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2020-07-18 00:20:32,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-18 00:20:32,547 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:20:32,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:20:32,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 00:20:32,548 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:20:32,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:20:32,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1044574925, now seen corresponding path program 1 times [2020-07-18 00:20:32,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:20:32,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775835827] [2020-07-18 00:20:32,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:20:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:20:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:20:32,674 INFO L280 TraceCheckUtils]: 0: Hoare triple {300#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {282#true} is VALID [2020-07-18 00:20:32,674 INFO L280 TraceCheckUtils]: 1: Hoare triple {282#true} #valid := #valid[0 := 0]; {282#true} is VALID [2020-07-18 00:20:32,675 INFO L280 TraceCheckUtils]: 2: Hoare triple {282#true} assume 0 < #StackHeapBarrier; {282#true} is VALID [2020-07-18 00:20:32,675 INFO L280 TraceCheckUtils]: 3: Hoare triple {282#true} assume true; {282#true} is VALID [2020-07-18 00:20:32,675 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {282#true} {282#true} #48#return; {282#true} is VALID [2020-07-18 00:20:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:20:32,742 INFO L280 TraceCheckUtils]: 0: Hoare triple {301#(= |#memory_int| |old(#memory_int)|)} ~a.base, ~a.offset := #in~a.base, #in~a.offset; {302#(and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset))} is VALID [2020-07-18 00:20:32,744 INFO L280 TraceCheckUtils]: 1: Hoare triple {302#(and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset))} SUMMARY for call #t~mem0 := read~int(~a.base, ~a.offset, 4); srcloc: L18 {302#(and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset))} is VALID [2020-07-18 00:20:32,745 INFO L280 TraceCheckUtils]: 2: Hoare triple {302#(and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset))} assume !(1 == #t~mem0); {302#(and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset))} is VALID [2020-07-18 00:20:32,746 INFO L280 TraceCheckUtils]: 3: Hoare triple {302#(and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset))} havoc #t~mem0; {302#(and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset))} is VALID [2020-07-18 00:20:32,748 INFO L280 TraceCheckUtils]: 4: Hoare triple {302#(and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset))} SUMMARY for call write~int(1, ~a.base, ~a.offset, 4); srcloc: L18-6 {303#(= (select (select |#memory_int| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 1)} is VALID [2020-07-18 00:20:32,749 INFO L280 TraceCheckUtils]: 5: Hoare triple {303#(= (select (select |#memory_int| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 1)} assume true; {303#(= (select (select |#memory_int| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 1)} is VALID [2020-07-18 00:20:32,751 INFO L275 TraceCheckUtils]: 6: Hoare quadruple {303#(= (select (select |#memory_int| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 1)} {282#true} #52#return; {296#(= 1 (select (select |#memory_int| |main_~#m~0.base|) |main_~#m~0.offset|))} is VALID [2020-07-18 00:20:32,753 INFO L263 TraceCheckUtils]: 0: Hoare triple {282#true} call ULTIMATE.init(); {300#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 00:20:32,753 INFO L280 TraceCheckUtils]: 1: Hoare triple {300#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {282#true} is VALID [2020-07-18 00:20:32,754 INFO L280 TraceCheckUtils]: 2: Hoare triple {282#true} #valid := #valid[0 := 0]; {282#true} is VALID [2020-07-18 00:20:32,754 INFO L280 TraceCheckUtils]: 3: Hoare triple {282#true} assume 0 < #StackHeapBarrier; {282#true} is VALID [2020-07-18 00:20:32,755 INFO L280 TraceCheckUtils]: 4: Hoare triple {282#true} assume true; {282#true} is VALID [2020-07-18 00:20:32,755 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {282#true} {282#true} #48#return; {282#true} is VALID [2020-07-18 00:20:32,756 INFO L263 TraceCheckUtils]: 6: Hoare triple {282#true} call #t~ret2 := main(); {282#true} is VALID [2020-07-18 00:20:32,756 INFO L280 TraceCheckUtils]: 7: Hoare triple {282#true} SUMMARY for call ~#m~0.base, ~#m~0.offset := #Ultimate.allocOnStack(4); srcloc: mainENTRY {282#true} is VALID [2020-07-18 00:20:32,757 INFO L280 TraceCheckUtils]: 8: Hoare triple {282#true} SUMMARY for call write~int(0, ~#m~0.base, ~#m~0.offset, 4); srcloc: L30 {282#true} is VALID [2020-07-18 00:20:32,758 INFO L263 TraceCheckUtils]: 9: Hoare triple {282#true} call mutex_lock(~#m~0.base, ~#m~0.offset); {301#(= |#memory_int| |old(#memory_int)|)} is VALID [2020-07-18 00:20:32,760 INFO L280 TraceCheckUtils]: 10: Hoare triple {301#(= |#memory_int| |old(#memory_int)|)} ~a.base, ~a.offset := #in~a.base, #in~a.offset; {302#(and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset))} is VALID [2020-07-18 00:20:32,761 INFO L280 TraceCheckUtils]: 11: Hoare triple {302#(and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset))} SUMMARY for call #t~mem0 := read~int(~a.base, ~a.offset, 4); srcloc: L18 {302#(and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset))} is VALID [2020-07-18 00:20:32,763 INFO L280 TraceCheckUtils]: 12: Hoare triple {302#(and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset))} assume !(1 == #t~mem0); {302#(and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset))} is VALID [2020-07-18 00:20:32,764 INFO L280 TraceCheckUtils]: 13: Hoare triple {302#(and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset))} havoc #t~mem0; {302#(and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset))} is VALID [2020-07-18 00:20:32,765 INFO L280 TraceCheckUtils]: 14: Hoare triple {302#(and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset))} SUMMARY for call write~int(1, ~a.base, ~a.offset, 4); srcloc: L18-6 {303#(= (select (select |#memory_int| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 1)} is VALID [2020-07-18 00:20:32,766 INFO L280 TraceCheckUtils]: 15: Hoare triple {303#(= (select (select |#memory_int| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 1)} assume true; {303#(= (select (select |#memory_int| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 1)} is VALID [2020-07-18 00:20:32,768 INFO L275 TraceCheckUtils]: 16: Hoare quadruple {303#(= (select (select |#memory_int| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 1)} {282#true} #52#return; {296#(= 1 (select (select |#memory_int| |main_~#m~0.base|) |main_~#m~0.offset|))} is VALID [2020-07-18 00:20:32,770 INFO L263 TraceCheckUtils]: 17: Hoare triple {296#(= 1 (select (select |#memory_int| |main_~#m~0.base|) |main_~#m~0.offset|))} call mutex_unlock(~#m~0.base, ~#m~0.offset); {297#(= (select (select |#memory_int| |mutex_unlock_#in~b.base|) |mutex_unlock_#in~b.offset|) 1)} is VALID [2020-07-18 00:20:32,771 INFO L280 TraceCheckUtils]: 18: Hoare triple {297#(= (select (select |#memory_int| |mutex_unlock_#in~b.base|) |mutex_unlock_#in~b.offset|) 1)} ~b.base, ~b.offset := #in~b.base, #in~b.offset; {298#(= 1 (select (select |#memory_int| mutex_unlock_~b.base) mutex_unlock_~b.offset))} is VALID [2020-07-18 00:20:32,773 INFO L280 TraceCheckUtils]: 19: Hoare triple {298#(= 1 (select (select |#memory_int| mutex_unlock_~b.base) mutex_unlock_~b.offset))} SUMMARY for call #t~mem1 := read~int(~b.base, ~b.offset, 4); srcloc: L24 {299#(= 1 |mutex_unlock_#t~mem1|)} is VALID [2020-07-18 00:20:32,774 INFO L280 TraceCheckUtils]: 20: Hoare triple {299#(= 1 |mutex_unlock_#t~mem1|)} assume 1 != #t~mem1; {283#false} is VALID [2020-07-18 00:20:32,774 INFO L280 TraceCheckUtils]: 21: Hoare triple {283#false} havoc #t~mem1; {283#false} is VALID [2020-07-18 00:20:32,775 INFO L263 TraceCheckUtils]: 22: Hoare triple {283#false} call err(); {283#false} is VALID [2020-07-18 00:20:32,775 INFO L280 TraceCheckUtils]: 23: Hoare triple {283#false} assume !false; {283#false} is VALID [2020-07-18 00:20:32,778 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 00:20:32,778 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:20:32,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775835827] [2020-07-18 00:20:32,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:20:32,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-18 00:20:32,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218883762] [2020-07-18 00:20:32,781 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-07-18 00:20:32,781 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:20:32,781 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 10 states. [2020-07-18 00:20:32,814 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 00:20:32,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-18 00:20:32,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:20:32,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-18 00:20:32,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-07-18 00:20:32,816 INFO L87 Difference]: Start difference. First operand 25 states and 24 transitions. Second operand 10 states. [2020-07-18 00:20:33,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:20:33,370 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2020-07-18 00:20:33,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-18 00:20:33,370 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-07-18 00:20:33,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:20:33,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-18 00:20:33,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 24 transitions. [2020-07-18 00:20:33,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-18 00:20:33,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 24 transitions. [2020-07-18 00:20:33,376 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 10 states and 24 transitions. [2020-07-18 00:20:33,410 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 00:20:33,410 INFO L225 Difference]: With dead ends: 25 [2020-07-18 00:20:33,410 INFO L226 Difference]: Without dead ends: 0 [2020-07-18 00:20:33,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-07-18 00:20:33,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-18 00:20:33,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-18 00:20:33,413 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:20:33,413 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-18 00:20:33,413 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-18 00:20:33,414 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-18 00:20:33,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:20:33,414 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-18 00:20:33,414 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 00:20:33,415 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:20:33,415 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:20:33,415 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-18 00:20:33,415 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-18 00:20:33,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:20:33,416 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-18 00:20:33,416 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 00:20:33,416 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:20:33,416 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:20:33,416 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:20:33,417 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:20:33,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-18 00:20:33,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-18 00:20:33,417 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-07-18 00:20:33,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:20:33,418 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-18 00:20:33,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-18 00:20:33,418 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2020-07-18 00:20:33,418 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:20:33,418 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 00:20:33,418 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:20:33,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 00:20:33,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-18 00:20:33,894 INFO L264 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (or (and (= 1 (select (select |#memory_int| mutex_unlock_~b.base) mutex_unlock_~b.offset)) (= |#memory_int| |old(#memory_int)|)) (not (= 1 (select (select |old(#memory_int)| |mutex_unlock_#in~b.base|) |mutex_unlock_#in~b.offset|)))) [2020-07-18 00:20:33,895 INFO L264 CegarLoopResult]: At program point L24-1(line 24) the Hoare annotation is: (or (not (= 1 (select (select |old(#memory_int)| |mutex_unlock_#in~b.base|) |mutex_unlock_#in~b.offset|))) (and (= 1 |mutex_unlock_#t~mem1|) (= 1 (select (select |#memory_int| mutex_unlock_~b.base) mutex_unlock_~b.offset)) (= |#memory_int| |old(#memory_int)|))) [2020-07-18 00:20:33,895 INFO L264 CegarLoopResult]: At program point L24-2(line 24) the Hoare annotation is: (not (= 1 (select (select |old(#memory_int)| |mutex_unlock_#in~b.base|) |mutex_unlock_#in~b.offset|))) [2020-07-18 00:20:33,895 INFO L264 CegarLoopResult]: At program point L24-3(line 24) the Hoare annotation is: (not (= 1 (select (select |old(#memory_int)| |mutex_unlock_#in~b.base|) |mutex_unlock_#in~b.offset|))) [2020-07-18 00:20:33,895 INFO L271 CegarLoopResult]: At program point L24-5(line 24) the Hoare annotation is: true [2020-07-18 00:20:33,895 INFO L271 CegarLoopResult]: At program point L24-6(line 24) the Hoare annotation is: true [2020-07-18 00:20:33,896 INFO L264 CegarLoopResult]: At program point mutex_unlockENTRY(lines 22 26) the Hoare annotation is: (or (not (= 1 (select (select |old(#memory_int)| |mutex_unlock_#in~b.base|) |mutex_unlock_#in~b.offset|))) (= |#memory_int| |old(#memory_int)|)) [2020-07-18 00:20:33,896 INFO L271 CegarLoopResult]: At program point mutex_unlockEXIT(lines 22 26) the Hoare annotation is: true [2020-07-18 00:20:33,896 INFO L271 CegarLoopResult]: At program point mutex_unlockFINAL(lines 22 26) the Hoare annotation is: true [2020-07-18 00:20:33,896 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-18 00:20:33,896 INFO L271 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-07-18 00:20:33,896 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-18 00:20:33,896 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-07-18 00:20:33,897 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-18 00:20:33,897 INFO L271 CegarLoopResult]: At program point errErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) the Hoare annotation is: true [2020-07-18 00:20:33,897 INFO L271 CegarLoopResult]: At program point errEXIT(lines 13 14) the Hoare annotation is: true [2020-07-18 00:20:33,897 INFO L271 CegarLoopResult]: At program point errENTRY(lines 13 14) the Hoare annotation is: true [2020-07-18 00:20:33,897 INFO L271 CegarLoopResult]: At program point errFINAL(lines 13 14) the Hoare annotation is: true [2020-07-18 00:20:33,898 INFO L264 CegarLoopResult]: At program point mutex_lockENTRY(lines 16 20) the Hoare annotation is: (or (= |#memory_int| |old(#memory_int)|) (not (= 0 (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|)))) [2020-07-18 00:20:33,898 INFO L264 CegarLoopResult]: At program point mutex_lockEXIT(lines 16 20) the Hoare annotation is: (or (and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= (select (select |#memory_int| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 1) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset)) (not (= 0 (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|)))) [2020-07-18 00:20:33,898 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (or (and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset) (= |#memory_int| |old(#memory_int)|)) (not (= 0 (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|)))) [2020-07-18 00:20:33,898 INFO L264 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (or (and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset) (= 0 |mutex_lock_#t~mem0|) (= |#memory_int| |old(#memory_int)|)) (not (= 0 (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|)))) [2020-07-18 00:20:33,898 INFO L264 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: (not (= 0 (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|))) [2020-07-18 00:20:33,899 INFO L264 CegarLoopResult]: At program point L18-3(line 18) the Hoare annotation is: (not (= 0 (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|))) [2020-07-18 00:20:33,899 INFO L264 CegarLoopResult]: At program point L18-5(line 18) the Hoare annotation is: (or (and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset) (= 0 |mutex_lock_#t~mem0|) (= |#memory_int| |old(#memory_int)|)) (not (= 0 (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|)))) [2020-07-18 00:20:33,899 INFO L264 CegarLoopResult]: At program point L18-6(line 18) the Hoare annotation is: (or (and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset) (= |#memory_int| |old(#memory_int)|)) (not (= 0 (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|)))) [2020-07-18 00:20:33,899 INFO L264 CegarLoopResult]: At program point mutex_lockFINAL(lines 16 20) the Hoare annotation is: (or (and (= |mutex_lock_#in~a.base| mutex_lock_~a.base) (= (select (select |#memory_int| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 1) (= |mutex_lock_#in~a.offset| mutex_lock_~a.offset)) (not (= 0 (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|)))) [2020-07-18 00:20:33,899 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-18 00:20:33,899 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-18 00:20:33,900 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-18 00:20:33,900 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-18 00:20:33,900 INFO L264 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (= 1 (select (select |#memory_int| |main_~#m~0.base|) |main_~#m~0.offset|)) [2020-07-18 00:20:33,900 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (= 0 (select (select |#memory_int| |main_~#m~0.base|) |main_~#m~0.offset|)) [2020-07-18 00:20:33,900 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-07-18 00:20:33,901 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 28 40) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|)) [2020-07-18 00:20:33,901 INFO L271 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: true [2020-07-18 00:20:33,901 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 28 40) the Hoare annotation is: true [2020-07-18 00:20:33,901 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 28 40) the Hoare annotation is: true [2020-07-18 00:20:33,901 INFO L271 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: true [2020-07-18 00:20:33,920 INFO L163 areAnnotationChecker]: CFG has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-18 00:20:33,931 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-18 00:20:33,932 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-18 00:20:33,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.07 12:20:33 BoogieIcfgContainer [2020-07-18 00:20:33,935 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-18 00:20:33,938 INFO L168 Benchmark]: Toolchain (without parser) took 3655.74 ms. Allocated memory was 139.5 MB in the beginning and 245.9 MB in the end (delta: 106.4 MB). Free memory was 105.1 MB in the beginning and 184.5 MB in the end (delta: -79.4 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2020-07-18 00:20:33,939 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 122.9 MB in the beginning and 122.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-18 00:20:33,940 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.18 ms. Allocated memory is still 139.5 MB. Free memory was 104.7 MB in the beginning and 94.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-18 00:20:33,941 INFO L168 Benchmark]: Boogie Preprocessor took 132.86 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 94.9 MB in the beginning and 181.3 MB in the end (delta: -86.5 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-07-18 00:20:33,942 INFO L168 Benchmark]: RCFGBuilder took 329.33 ms. Allocated memory is still 203.4 MB. Free memory was 181.3 MB in the beginning and 161.9 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-07-18 00:20:33,943 INFO L168 Benchmark]: TraceAbstraction took 2906.12 ms. Allocated memory was 203.4 MB in the beginning and 245.9 MB in the end (delta: 42.5 MB). Free memory was 161.2 MB in the beginning and 184.5 MB in the end (delta: -23.3 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2020-07-18 00:20:33,947 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 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 122.9 MB in the beginning and 122.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 280.18 ms. Allocated memory is still 139.5 MB. Free memory was 104.7 MB in the beginning and 94.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.86 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 94.9 MB in the beginning and 181.3 MB in the end (delta: -86.5 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 329.33 ms. Allocated memory is still 203.4 MB. Free memory was 181.3 MB in the beginning and 161.9 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2906.12 ms. Allocated memory was 203.4 MB in the beginning and 245.9 MB in the end (delta: 42.5 MB). Free memory was 161.2 MB in the beginning and 184.5 MB in the end (delta: -23.3 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 22]: Procedure Contract for mutex_unlock Derived contract for procedure mutex_unlock: 1 - ProcedureContractResult [Line: 13]: Procedure Contract for err Derived contract for procedure err: 1 - ProcedureContractResult [Line: 16]: Procedure Contract for mutex_lock [2020-07-18 00:20:33,956 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-18 00:20:33,956 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-18 00:20:33,957 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-18 00:20:33,958 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived contract for procedure mutex_lock: ((a == a && unknown-#memory_int-unknown[a][a] == 1) && a == a) || !(0 == \old(unknown-#memory_int-unknown)[a][a]) - ProcedureContractResult [Line: 28]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 43 SDslu, 89 SDs, 0 SdLazy, 179 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 39 LocationsWithAnnotation, 56 PreInvPairs, 69 NumberOfFragments, 281 HoareAnnotationTreeSize, 56 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 39 FomulaSimplificationsInter, 265 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 correct! Received shutdown request...