/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/volatile_alias.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-46f3038-m [2020-07-08 22:23:47,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-08 22:23:47,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-08 22:23:47,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-08 22:23:47,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-08 22:23:47,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-08 22:23:47,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-08 22:23:47,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-08 22:23:47,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-08 22:23:47,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-08 22:23:47,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-08 22:23:47,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-08 22:23:47,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-08 22:23:47,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-08 22:23:47,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-08 22:23:47,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-08 22:23:47,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-08 22:23:47,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-08 22:23:47,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-08 22:23:47,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-08 22:23:47,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-08 22:23:47,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-08 22:23:47,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-08 22:23:47,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-08 22:23:47,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-08 22:23:47,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-08 22:23:47,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-08 22:23:47,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-08 22:23:47,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-08 22:23:47,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-08 22:23:47,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-08 22:23:47,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-08 22:23:47,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-08 22:23:47,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-08 22:23:47,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-08 22:23:47,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-08 22:23:47,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-08 22:23:47,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-08 22:23:47,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-08 22:23:47,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-08 22:23:47,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-08 22:23:47,595 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-08 22:23:47,613 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-08 22:23:47,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-08 22:23:47,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-08 22:23:47,617 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-08 22:23:47,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-08 22:23:47,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-08 22:23:47,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-08 22:23:47,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-08 22:23:47,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-08 22:23:47,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-08 22:23:47,619 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-08 22:23:47,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-08 22:23:47,619 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-08 22:23:47,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-08 22:23:47,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-08 22:23:47,620 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-08 22:23:47,621 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-08 22:23:47,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-08 22:23:47,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 22:23:47,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-08 22:23:47,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-08 22:23:47,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-08 22:23:47,622 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 [2020-07-08 22:23:47,892 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-08 22:23:47,905 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-08 22:23:47,908 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-08 22:23:47,910 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-08 22:23:47,910 INFO L275 PluginConnector]: CDTParser initialized [2020-07-08 22:23:47,911 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/volatile_alias.c_1.i [2020-07-08 22:23:47,984 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff24c102e/6441e5ca1954419e83cbd4f67c22a72f/FLAGac5f8e332 [2020-07-08 22:23:48,475 INFO L306 CDTParser]: Found 1 translation units. [2020-07-08 22:23:48,475 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/volatile_alias.c_1.i [2020-07-08 22:23:48,482 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff24c102e/6441e5ca1954419e83cbd4f67c22a72f/FLAGac5f8e332 [2020-07-08 22:23:48,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff24c102e/6441e5ca1954419e83cbd4f67c22a72f [2020-07-08 22:23:48,889 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-08 22:23:48,891 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-08 22:23:48,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-08 22:23:48,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-08 22:23:48,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-08 22:23:48,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 10:23:48" (1/1) ... [2020-07-08 22:23:48,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b684826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 10:23:48, skipping insertion in model container [2020-07-08 22:23:48,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 10:23:48" (1/1) ... [2020-07-08 22:23:48,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-08 22:23:48,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-08 22:23:49,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 22:23:49,114 INFO L203 MainTranslator]: Completed pre-run [2020-07-08 22:23:49,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 22:23:49,149 INFO L208 MainTranslator]: Completed translation [2020-07-08 22:23:49,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 10:23:49 WrapperNode [2020-07-08 22:23:49,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-08 22:23:49,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-08 22:23:49,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-08 22:23:49,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-08 22:23:49,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 10:23:49" (1/1) ... [2020-07-08 22:23:49,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 10:23:49" (1/1) ... [2020-07-08 22:23:49,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 10:23:49" (1/1) ... [2020-07-08 22:23:49,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 10:23:49" (1/1) ... [2020-07-08 22:23:49,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 10:23:49" (1/1) ... [2020-07-08 22:23:49,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 10:23:49" (1/1) ... [2020-07-08 22:23:49,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 10:23:49" (1/1) ... [2020-07-08 22:23:49,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-08 22:23:49,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-08 22:23:49,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-08 22:23:49,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-08 22:23:49,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 10:23:49" (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 [2020-07-08 22:23:49,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-08 22:23:49,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-08 22:23:49,337 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-08 22:23:49,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-08 22:23:49,337 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-08 22:23:49,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-08 22:23:49,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-08 22:23:49,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-08 22:23:49,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-08 22:23:49,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-08 22:23:49,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-08 22:23:49,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-08 22:23:49,615 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-08 22:23:49,615 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-08 22:23:49,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 10:23:49 BoogieIcfgContainer [2020-07-08 22:23:49,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-08 22:23:49,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-08 22:23:49,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-08 22:23:49,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-08 22:23:49,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.07 10:23:48" (1/3) ... [2020-07-08 22:23:49,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e7a8ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 10:23:49, skipping insertion in model container [2020-07-08 22:23:49,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 10:23:49" (2/3) ... [2020-07-08 22:23:49,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e7a8ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 10:23:49, skipping insertion in model container [2020-07-08 22:23:49,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 10:23:49" (3/3) ... [2020-07-08 22:23:49,628 INFO L109 eAbstractionObserver]: Analyzing ICFG volatile_alias.c_1.i [2020-07-08 22:23:49,638 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-08 22:23:49,646 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-08 22:23:49,660 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-08 22:23:49,698 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-08 22:23:49,699 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-08 22:23:49,699 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-08 22:23:49,699 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-08 22:23:49,699 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-08 22:23:49,699 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-08 22:23:49,700 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-08 22:23:49,700 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-08 22:23:49,723 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-07-08 22:23:49,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-08 22:23:49,736 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 22:23:49,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 22:23:49,738 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 22:23:49,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 22:23:49,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1049886255, now seen corresponding path program 1 times [2020-07-08 22:23:49,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 22:23:49,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931619388] [2020-07-08 22:23:49,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 22:23:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 22:23:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 22:23:50,102 INFO L280 TraceCheckUtils]: 0: Hoare triple {42#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {30#true} is VALID [2020-07-08 22:23:50,103 INFO L280 TraceCheckUtils]: 1: Hoare triple {30#true} #valid := #valid[0 := 0]; {30#true} is VALID [2020-07-08 22:23:50,103 INFO L280 TraceCheckUtils]: 2: Hoare triple {30#true} assume 0 < #StackHeapBarrier; {30#true} is VALID [2020-07-08 22:23:50,104 INFO L280 TraceCheckUtils]: 3: Hoare triple {30#true} assume true; {30#true} is VALID [2020-07-08 22:23:50,104 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {30#true} {30#true} #31#return; {30#true} is VALID [2020-07-08 22:23:50,109 INFO L263 TraceCheckUtils]: 0: Hoare triple {30#true} call ULTIMATE.init(); {42#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-08 22:23:50,109 INFO L280 TraceCheckUtils]: 1: Hoare triple {42#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {30#true} is VALID [2020-07-08 22:23:50,110 INFO L280 TraceCheckUtils]: 2: Hoare triple {30#true} #valid := #valid[0 := 0]; {30#true} is VALID [2020-07-08 22:23:50,110 INFO L280 TraceCheckUtils]: 3: Hoare triple {30#true} assume 0 < #StackHeapBarrier; {30#true} is VALID [2020-07-08 22:23:50,110 INFO L280 TraceCheckUtils]: 4: Hoare triple {30#true} assume true; {30#true} is VALID [2020-07-08 22:23:50,111 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {30#true} {30#true} #31#return; {30#true} is VALID [2020-07-08 22:23:50,111 INFO L263 TraceCheckUtils]: 6: Hoare triple {30#true} call #t~ret2 := main(); {30#true} is VALID [2020-07-08 22:23:50,112 INFO L280 TraceCheckUtils]: 7: Hoare triple {30#true} SUMMARY for call ~#a~0.base, ~#a~0.offset := #Ultimate.allocOnStack(4); srcloc: mainENTRY {30#true} is VALID [2020-07-08 22:23:50,113 INFO L280 TraceCheckUtils]: 8: Hoare triple {30#true} SUMMARY for call write~init~int(4, ~#a~0.base, ~#a~0.offset, 4); srcloc: L18 {37#(= 4 (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|))} is VALID [2020-07-08 22:23:50,115 INFO L280 TraceCheckUtils]: 9: Hoare triple {37#(= 4 (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|))} ~p~0.base, ~p~0.offset := ~#a~0.base, ~#a~0.offset; {37#(= 4 (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|))} is VALID [2020-07-08 22:23:50,118 INFO L280 TraceCheckUtils]: 10: Hoare triple {37#(= 4 (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|))} ~p~0.base, ~p~0.offset := ~#a~0.base, ~#a~0.offset; {38#(and (= main_~p~0.base |main_~#a~0.base|) (= |main_~#a~0.offset| main_~p~0.offset) (= 4 (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|)))} is VALID [2020-07-08 22:23:50,120 INFO L280 TraceCheckUtils]: 11: Hoare triple {38#(and (= main_~p~0.base |main_~#a~0.base|) (= |main_~#a~0.offset| main_~p~0.offset) (= 4 (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|)))} SUMMARY for call #t~mem0 := read~int(~#a~0.base, ~#a~0.offset, 4); srcloc: L21 {39#(and (= main_~p~0.base |main_~#a~0.base|) (= |main_~#a~0.offset| main_~p~0.offset) (= 4 |main_#t~mem0|))} is VALID [2020-07-08 22:23:50,122 INFO L280 TraceCheckUtils]: 12: Hoare triple {39#(and (= main_~p~0.base |main_~#a~0.base|) (= |main_~#a~0.offset| main_~p~0.offset) (= 4 |main_#t~mem0|))} SUMMARY for call write~int(#t~mem0 - 4, ~#a~0.base, ~#a~0.offset, 4); srcloc: L21-1 {40#(= 0 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))} is VALID [2020-07-08 22:23:50,123 INFO L280 TraceCheckUtils]: 13: Hoare triple {40#(= 0 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))} havoc #t~mem0; {40#(= 0 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))} is VALID [2020-07-08 22:23:50,125 INFO L280 TraceCheckUtils]: 14: Hoare triple {40#(= 0 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))} SUMMARY for call #t~mem1 := read~int(~p~0.base, ~p~0.offset, 4); srcloc: L22 {41#(= 0 |main_#t~mem1|)} is VALID [2020-07-08 22:23:50,126 INFO L280 TraceCheckUtils]: 15: Hoare triple {41#(= 0 |main_#t~mem1|)} assume 0 != #t~mem1; {31#false} is VALID [2020-07-08 22:23:50,126 INFO L280 TraceCheckUtils]: 16: Hoare triple {31#false} havoc #t~mem1; {31#false} is VALID [2020-07-08 22:23:50,127 INFO L280 TraceCheckUtils]: 17: Hoare triple {31#false} assume !false; {31#false} is VALID [2020-07-08 22:23:50,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 22:23:50,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931619388] [2020-07-08 22:23:50,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 22:23:50,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-08 22:23:50,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278779006] [2020-07-08 22:23:50,142 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-07-08 22:23:50,145 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 22:23:50,149 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states. [2020-07-08 22:23:50,191 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 22:23:50,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-08 22:23:50,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 22:23:50,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-08 22:23:50,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-08 22:23:50,204 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 8 states. [2020-07-08 22:23:50,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 22:23:50,604 INFO L93 Difference]: Finished difference Result 34 states and 33 transitions. [2020-07-08 22:23:50,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-08 22:23:50,605 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-07-08 22:23:50,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 22:23:50,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-08 22:23:50,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 33 transitions. [2020-07-08 22:23:50,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-08 22:23:50,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 33 transitions. [2020-07-08 22:23:50,624 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states and 33 transitions. [2020-07-08 22:23:50,677 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 22:23:50,684 INFO L225 Difference]: With dead ends: 34 [2020-07-08 22:23:50,684 INFO L226 Difference]: Without dead ends: 0 [2020-07-08 22:23:50,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-07-08 22:23:50,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-08 22:23:50,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-08 22:23:50,715 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 22:23:50,716 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-08 22:23:50,716 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-08 22:23:50,717 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-08 22:23:50,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 22:23:50,717 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-08 22:23:50,718 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-08 22:23:50,718 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 22:23:50,718 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 22:23:50,719 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-08 22:23:50,719 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-08 22:23:50,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 22:23:50,719 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-08 22:23:50,719 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-08 22:23:50,720 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 22:23:50,720 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 22:23:50,720 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 22:23:50,720 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 22:23:50,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-08 22:23:50,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-08 22:23:50,722 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-07-08 22:23:50,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 22:23:50,723 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-08 22:23:50,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-08 22:23:50,723 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2020-07-08 22:23:50,723 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 22:23:50,723 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-08 22:23:50,724 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 22:23:50,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-08 22:23:50,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-08 22:23:50,938 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-08 22:23:50,938 INFO L271 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-07-08 22:23:50,938 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-08 22:23:50,939 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-07-08 22:23:50,939 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-08 22:23:50,939 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-08 22:23:50,939 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-08 22:23:50,939 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-08 22:23:50,940 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-08 22:23:50,940 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 23) the Hoare annotation is: false [2020-07-08 22:23:50,940 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 16 26) the Hoare annotation is: (= |#valid| |old(#valid)|) [2020-07-08 22:23:50,940 INFO L264 CegarLoopResult]: At program point mainEXIT(lines 16 26) the Hoare annotation is: (= 0 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset)) [2020-07-08 22:23:50,941 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: false [2020-07-08 22:23:50,943 INFO L264 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (= 0 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset)) [2020-07-08 22:23:50,944 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (and (= main_~p~0.base |main_~#a~0.base|) (= |main_~#a~0.offset| main_~p~0.offset) (= 4 (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|))) [2020-07-08 22:23:50,944 INFO L264 CegarLoopResult]: At program point L22-1(lines 22 24) the Hoare annotation is: (and (= 0 |main_#t~mem1|) (= 0 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))) [2020-07-08 22:23:50,944 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (= main_~p~0.base |main_~#a~0.base|) (= |main_~#a~0.offset| main_~p~0.offset) (= 4 (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|))) [2020-07-08 22:23:50,944 INFO L264 CegarLoopResult]: At program point L21-1(line 21) the Hoare annotation is: (and (= main_~p~0.base |main_~#a~0.base|) (= |main_~#a~0.offset| main_~p~0.offset) (= 4 |main_#t~mem0|) (= 4 (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|))) [2020-07-08 22:23:50,944 INFO L264 CegarLoopResult]: At program point L22-2(line 22) the Hoare annotation is: false [2020-07-08 22:23:50,945 INFO L264 CegarLoopResult]: At program point L21-2(line 21) the Hoare annotation is: (and (= main_~p~0.base |main_~#a~0.base|) (= |main_~#a~0.offset| main_~p~0.offset) (= 0 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset)) (= 4 |main_#t~mem0|)) [2020-07-08 22:23:50,945 INFO L271 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: true [2020-07-08 22:23:50,945 INFO L264 CegarLoopResult]: At program point L22-4(line 22) the Hoare annotation is: (and (= 0 |main_#t~mem1|) (= 0 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))) [2020-07-08 22:23:50,947 INFO L264 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (= 4 (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|)) [2020-07-08 22:23:50,947 INFO L264 CegarLoopResult]: At program point L22-5(lines 22 24) the Hoare annotation is: (= 0 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset)) [2020-07-08 22:23:50,947 INFO L264 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: (= 0 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset)) [2020-07-08 22:23:50,947 INFO L264 CegarLoopResult]: At program point L18-3(line 18) the Hoare annotation is: (= 0 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset)) [2020-07-08 22:23:50,948 INFO L264 CegarLoopResult]: At program point mainFINAL(lines 16 26) the Hoare annotation is: (= 0 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset)) [2020-07-08 22:23:50,964 INFO L163 areAnnotationChecker]: CFG has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-08 22:23:50,975 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-08 22:23:50,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.07 10:23:50 BoogieIcfgContainer [2020-07-08 22:23:50,981 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-08 22:23:50,985 INFO L168 Benchmark]: Toolchain (without parser) took 2093.51 ms. Allocated memory was 144.2 MB in the beginning and 233.3 MB in the end (delta: 89.1 MB). Free memory was 100.9 MB in the beginning and 158.8 MB in the end (delta: -57.9 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. [2020-07-08 22:23:50,987 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 144.2 MB. Free memory was 119.6 MB in the beginning and 119.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-08 22:23:50,990 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.31 ms. Allocated memory is still 144.2 MB. Free memory was 100.7 MB in the beginning and 90.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-08 22:23:50,991 INFO L168 Benchmark]: Boogie Preprocessor took 124.38 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 90.9 MB in the beginning and 180.0 MB in the end (delta: -89.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-08 22:23:50,993 INFO L168 Benchmark]: RCFGBuilder took 344.58 ms. Allocated memory is still 201.9 MB. Free memory was 180.0 MB in the beginning and 163.1 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2020-07-08 22:23:50,994 INFO L168 Benchmark]: TraceAbstraction took 1360.89 ms. Allocated memory was 201.9 MB in the beginning and 233.3 MB in the end (delta: 31.5 MB). Free memory was 163.1 MB in the beginning and 158.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. [2020-07-08 22:23:51,009 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 0.25 ms. Allocated memory is still 144.2 MB. Free memory was 119.6 MB in the beginning and 119.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 258.31 ms. Allocated memory is still 144.2 MB. Free memory was 100.7 MB in the beginning and 90.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.38 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 90.9 MB in the beginning and 180.0 MB in the end (delta: -89.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 344.58 ms. Allocated memory is still 201.9 MB. Free memory was 180.0 MB in the beginning and 163.1 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1360.89 ms. Allocated memory was 201.9 MB in the beginning and 233.3 MB in the end (delta: 31.5 MB). Free memory was 163.1 MB in the beginning and 158.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 35.7 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 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: 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: 16]: Procedure Contract for main [2020-07-08 22:23:51,026 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-08 22:23:51,027 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived contract for procedure main: 0 == unknown-#memory_int-unknown[p][p] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 10 SDslu, 52 SDs, 0 SdLazy, 52 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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: 0.0s HoareAnnotationTime, 27 LocationsWithAnnotation, 27 PreInvPairs, 34 NumberOfFragments, 158 HoareAnnotationTreeSize, 27 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 27 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 1258 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 correct! Received shutdown request...