/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test15.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 22:29:52,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 22:29:52,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 22:29:52,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 22:29:52,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 22:29:52,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 22:29:52,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 22:29:52,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 22:29:52,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 22:29:52,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 22:29:52,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 22:29:52,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 22:29:52,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 22:29:52,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 22:29:52,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 22:29:52,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 22:29:52,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 22:29:52,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 22:29:52,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 22:29:52,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 22:29:52,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 22:29:52,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 22:29:52,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 22:29:52,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 22:29:52,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 22:29:52,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 22:29:52,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 22:29:52,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 22:29:52,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 22:29:52,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 22:29:52,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 22:29:52,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 22:29:52,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 22:29:52,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 22:29:52,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 22:29:52,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 22:29:52,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 22:29:52,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 22:29:52,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 22:29:52,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 22:29:52,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 22:29:52,533 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 22:29:52,547 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 22:29:52,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 22:29:52,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 22:29:52,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 22:29:52,549 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 22:29:52,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 22:29:52,549 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 22:29:52,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 22:29:52,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 22:29:52,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 22:29:52,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 22:29:52,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 22:29:52,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 22:29:52,550 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 22:29:52,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 22:29:52,551 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 22:29:52,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 22:29:52,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 22:29:52,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 22:29:52,552 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 22:29:52,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 22:29:52,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:29:52,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 22:29:52,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 22:29:52,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 22:29:52,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 22:29:52,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 22:29:52,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 22:29:52,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 22:29:52,553 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 22:29:52,830 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 22:29:52,844 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 22:29:52,848 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 22:29:52,850 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 22:29:52,850 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 22:29:52,851 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test15.c [2020-07-17 22:29:52,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/457c4b9fe/efb102d1c1f845169b004d30cebed5ce/FLAGe68bd933d [2020-07-17 22:29:53,400 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 22:29:53,401 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test15.c [2020-07-17 22:29:53,407 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/457c4b9fe/efb102d1c1f845169b004d30cebed5ce/FLAGe68bd933d [2020-07-17 22:29:53,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/457c4b9fe/efb102d1c1f845169b004d30cebed5ce [2020-07-17 22:29:53,826 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 22:29:53,830 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 22:29:53,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 22:29:53,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 22:29:53,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 22:29:53,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:29:53" (1/1) ... [2020-07-17 22:29:53,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59e526ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:53, skipping insertion in model container [2020-07-17 22:29:53,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:29:53" (1/1) ... [2020-07-17 22:29:53,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 22:29:53,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 22:29:54,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:29:54,056 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 22:29:54,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:29:54,092 INFO L208 MainTranslator]: Completed translation [2020-07-17 22:29:54,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:54 WrapperNode [2020-07-17 22:29:54,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 22:29:54,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 22:29:54,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 22:29:54,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 22:29:54,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:54" (1/1) ... [2020-07-17 22:29:54,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:54" (1/1) ... [2020-07-17 22:29:54,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:54" (1/1) ... [2020-07-17 22:29:54,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:54" (1/1) ... [2020-07-17 22:29:54,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:54" (1/1) ... [2020-07-17 22:29:54,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:54" (1/1) ... [2020-07-17 22:29:54,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:54" (1/1) ... [2020-07-17 22:29:54,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 22:29:54,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 22:29:54,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 22:29:54,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 22:29:54,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:54" (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 [2020-07-17 22:29:54,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 22:29:54,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 22:29:54,292 INFO L138 BoogieDeclarations]: Found implementation of procedure assign [2020-07-17 22:29:54,292 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 22:29:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 22:29:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 22:29:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure assign [2020-07-17 22:29:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 22:29:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 22:29:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 22:29:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 22:29:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 22:29:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 22:29:54,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 22:29:54,570 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 22:29:54,570 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 22:29:54,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:29:54 BoogieIcfgContainer [2020-07-17 22:29:54,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 22:29:54,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 22:29:54,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 22:29:54,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 22:29:54,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 10:29:53" (1/3) ... [2020-07-17 22:29:54,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2210d069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:29:54, skipping insertion in model container [2020-07-17 22:29:54,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:54" (2/3) ... [2020-07-17 22:29:54,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2210d069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:29:54, skipping insertion in model container [2020-07-17 22:29:54,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:29:54" (3/3) ... [2020-07-17 22:29:54,589 INFO L109 eAbstractionObserver]: Analyzing ICFG test15.c [2020-07-17 22:29:54,604 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 22:29:54,615 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 22:29:54,634 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 22:29:54,665 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 22:29:54,666 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 22:29:54,666 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 22:29:54,666 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 22:29:54,666 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 22:29:54,666 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 22:29:54,667 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 22:29:54,667 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 22:29:54,689 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-07-17 22:29:54,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-17 22:29:54,697 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:29:54,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:29:54,702 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:29:54,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:29:54,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1573149608, now seen corresponding path program 1 times [2020-07-17 22:29:54,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:29:54,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315775258] [2020-07-17 22:29:54,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:29:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:29:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:29:55,183 INFO L280 TraceCheckUtils]: 0: Hoare triple {32#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {21#true} is VALID [2020-07-17 22:29:55,184 INFO L280 TraceCheckUtils]: 1: Hoare triple {21#true} assume true; {21#true} is VALID [2020-07-17 22:29:55,186 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {21#true} {21#true} #19#return; {21#true} is VALID [2020-07-17 22:29:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:29:55,309 INFO L280 TraceCheckUtils]: 0: Hoare triple {33#(= |#memory_int| |old(#memory_int)|)} ~pa.base, ~pa.offset := #in~pa.base, #in~pa.offset;~pb.base, ~pb.offset := #in~pb.base, #in~pb.offset;call #t~mem0 := read~int(~pb.base, ~pb.offset, 4);call write~int(#t~mem0, ~pa.base, ~pa.offset, 4);havoc #t~mem0; {34#(or (= (select (select |#memory_int| |assign_#in~pa.base|) |assign_#in~pa.offset|) (select (select |#memory_int| |assign_#in~pb.base|) |assign_#in~pb.offset|)) (= |assign_#in~pa.base| |assign_#in~pb.base|))} is VALID [2020-07-17 22:29:55,310 INFO L280 TraceCheckUtils]: 1: Hoare triple {34#(or (= (select (select |#memory_int| |assign_#in~pa.base|) |assign_#in~pa.offset|) (select (select |#memory_int| |assign_#in~pb.base|) |assign_#in~pb.offset|)) (= |assign_#in~pa.base| |assign_#in~pb.base|))} assume true; {34#(or (= (select (select |#memory_int| |assign_#in~pa.base|) |assign_#in~pa.offset|) (select (select |#memory_int| |assign_#in~pb.base|) |assign_#in~pb.offset|)) (= |assign_#in~pa.base| |assign_#in~pb.base|))} is VALID [2020-07-17 22:29:55,315 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {34#(or (= (select (select |#memory_int| |assign_#in~pa.base|) |assign_#in~pa.offset|) (select (select |#memory_int| |assign_#in~pb.base|) |assign_#in~pb.offset|)) (= |assign_#in~pa.base| |assign_#in~pb.base|))} {26#(not (= |main_~#b~0.base| |main_~#a~0.base|))} #23#return; {30#(= (select (select |#memory_int| |main_~#b~0.base|) |main_~#b~0.offset|) (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|))} is VALID [2020-07-17 22:29:55,317 INFO L263 TraceCheckUtils]: 0: Hoare triple {21#true} call ULTIMATE.init(); {32#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-17 22:29:55,318 INFO L280 TraceCheckUtils]: 1: Hoare triple {32#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {21#true} is VALID [2020-07-17 22:29:55,318 INFO L280 TraceCheckUtils]: 2: Hoare triple {21#true} assume true; {21#true} is VALID [2020-07-17 22:29:55,318 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {21#true} {21#true} #19#return; {21#true} is VALID [2020-07-17 22:29:55,319 INFO L263 TraceCheckUtils]: 4: Hoare triple {21#true} call #t~ret4 := main(); {21#true} is VALID [2020-07-17 22:29:55,321 INFO L280 TraceCheckUtils]: 5: Hoare triple {21#true} call ~#a~0.base, ~#a~0.offset := #Ultimate.allocOnStack(4);call ~#b~0.base, ~#b~0.offset := #Ultimate.allocOnStack(4);assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;call write~int(#t~nondet1, ~#b~0.base, ~#b~0.offset, 4);havoc #t~nondet1; {26#(not (= |main_~#b~0.base| |main_~#a~0.base|))} is VALID [2020-07-17 22:29:55,324 INFO L263 TraceCheckUtils]: 6: Hoare triple {26#(not (= |main_~#b~0.base| |main_~#a~0.base|))} call assign(~#a~0.base, ~#a~0.offset, ~#b~0.base, ~#b~0.offset); {33#(= |#memory_int| |old(#memory_int)|)} is VALID [2020-07-17 22:29:55,326 INFO L280 TraceCheckUtils]: 7: Hoare triple {33#(= |#memory_int| |old(#memory_int)|)} ~pa.base, ~pa.offset := #in~pa.base, #in~pa.offset;~pb.base, ~pb.offset := #in~pb.base, #in~pb.offset;call #t~mem0 := read~int(~pb.base, ~pb.offset, 4);call write~int(#t~mem0, ~pa.base, ~pa.offset, 4);havoc #t~mem0; {34#(or (= (select (select |#memory_int| |assign_#in~pa.base|) |assign_#in~pa.offset|) (select (select |#memory_int| |assign_#in~pb.base|) |assign_#in~pb.offset|)) (= |assign_#in~pa.base| |assign_#in~pb.base|))} is VALID [2020-07-17 22:29:55,327 INFO L280 TraceCheckUtils]: 8: Hoare triple {34#(or (= (select (select |#memory_int| |assign_#in~pa.base|) |assign_#in~pa.offset|) (select (select |#memory_int| |assign_#in~pb.base|) |assign_#in~pb.offset|)) (= |assign_#in~pa.base| |assign_#in~pb.base|))} assume true; {34#(or (= (select (select |#memory_int| |assign_#in~pa.base|) |assign_#in~pa.offset|) (select (select |#memory_int| |assign_#in~pb.base|) |assign_#in~pb.offset|)) (= |assign_#in~pa.base| |assign_#in~pb.base|))} is VALID [2020-07-17 22:29:55,330 INFO L275 TraceCheckUtils]: 9: Hoare quadruple {34#(or (= (select (select |#memory_int| |assign_#in~pa.base|) |assign_#in~pa.offset|) (select (select |#memory_int| |assign_#in~pb.base|) |assign_#in~pb.offset|)) (= |assign_#in~pa.base| |assign_#in~pb.base|))} {26#(not (= |main_~#b~0.base| |main_~#a~0.base|))} #23#return; {30#(= (select (select |#memory_int| |main_~#b~0.base|) |main_~#b~0.offset|) (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|))} is VALID [2020-07-17 22:29:55,332 INFO L280 TraceCheckUtils]: 10: Hoare triple {30#(= (select (select |#memory_int| |main_~#b~0.base|) |main_~#b~0.offset|) (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|))} call #t~mem2 := read~int(~#a~0.base, ~#a~0.offset, 4);call #t~mem3 := read~int(~#b~0.base, ~#b~0.offset, 4); {31#(= |main_#t~mem3| |main_#t~mem2|)} is VALID [2020-07-17 22:29:55,334 INFO L280 TraceCheckUtils]: 11: Hoare triple {31#(= |main_#t~mem3| |main_#t~mem2|)} assume #t~mem2 != #t~mem3;havoc #t~mem2;havoc #t~mem3; {22#false} is VALID [2020-07-17 22:29:55,334 INFO L280 TraceCheckUtils]: 12: Hoare triple {22#false} assume !false; {22#false} is VALID [2020-07-17 22:29:55,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:29:55,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315775258] [2020-07-17 22:29:55,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:29:55,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-17 22:29:55,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57676878] [2020-07-17 22:29:55,353 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-07-17 22:29:55,357 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:29:55,360 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states. [2020-07-17 22:29:55,408 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:29:55,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 22:29:55,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:29:55,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 22:29:55,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-07-17 22:29:55,424 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 8 states. [2020-07-17 22:29:55,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:29:55,878 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2020-07-17 22:29:55,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-17 22:29:55,879 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-07-17 22:29:55,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:29:55,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-17 22:29:55,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 21 transitions. [2020-07-17 22:29:55,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-17 22:29:55,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 21 transitions. [2020-07-17 22:29:55,898 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states and 21 transitions. [2020-07-17 22:29:55,935 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 21 edges. 21 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:29:55,942 INFO L225 Difference]: With dead ends: 22 [2020-07-17 22:29:55,942 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 22:29:55,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-07-17 22:29:55,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 22:29:55,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 22:29:55,971 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:29:55,971 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-17 22:29:55,972 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-17 22:29:55,972 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-17 22:29:55,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:29:55,973 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-17 22:29:55,973 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:29:55,973 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:29:55,974 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:29:55,974 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-17 22:29:55,974 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-17 22:29:55,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:29:55,974 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-17 22:29:55,975 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:29:55,975 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:29:55,975 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:29:55,975 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:29:55,976 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:29:55,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 22:29:55,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 22:29:55,978 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-07-17 22:29:55,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:29:55,978 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 22:29:55,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 22:29:55,978 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:29:55,979 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:29:55,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 22:29:55,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 22:29:56,054 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-17 22:29:56,054 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)|)) [2020-07-17 22:29:56,054 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-17 22:29:56,054 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-17 22:29:56,055 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 22:29:56,055 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 22:29:56,055 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-17 22:29:56,055 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-07-17 22:29:56,055 INFO L264 CegarLoopResult]: At program point L14(lines 9 21) the Hoare annotation is: false [2020-07-17 22:29:56,056 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 9 21) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|)) [2020-07-17 22:29:56,056 INFO L268 CegarLoopResult]: For program point L13(lines 13 15) no Hoare annotation was computed. [2020-07-17 22:29:56,056 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 9 21) no Hoare annotation was computed. [2020-07-17 22:29:56,056 INFO L264 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: (not (= |main_~#b~0.base| |main_~#a~0.base|)) [2020-07-17 22:29:56,056 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-07-17 22:29:56,057 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 9 21) no Hoare annotation was computed. [2020-07-17 22:29:56,057 INFO L268 CegarLoopResult]: For program point assignEXIT(lines 5 7) no Hoare annotation was computed. [2020-07-17 22:29:56,057 INFO L264 CegarLoopResult]: At program point assignENTRY(lines 5 7) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-07-17 22:29:56,057 INFO L268 CegarLoopResult]: For program point assignFINAL(lines 5 7) no Hoare annotation was computed. [2020-07-17 22:29:56,062 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-17 22:29:56,064 WARN L170 areAnnotationChecker]: assignFINAL has no Hoare annotation [2020-07-17 22:29:56,064 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-17 22:29:56,065 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:29:56,066 WARN L170 areAnnotationChecker]: L12-1 has no Hoare annotation [2020-07-17 22:29:56,067 WARN L170 areAnnotationChecker]: assignFINAL has no Hoare annotation [2020-07-17 22:29:56,067 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-17 22:29:56,067 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:29:56,067 WARN L170 areAnnotationChecker]: L12-1 has no Hoare annotation [2020-07-17 22:29:56,068 WARN L170 areAnnotationChecker]: assignEXIT has no Hoare annotation [2020-07-17 22:29:56,068 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-17 22:29:56,068 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-17 22:29:56,068 WARN L170 areAnnotationChecker]: mainErr0ASSERT_VIOLATIONERROR_FUNCTION has no Hoare annotation [2020-07-17 22:29:56,068 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-17 22:29:56,068 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-17 22:29:56,069 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-17 22:29:56,069 INFO L163 areAnnotationChecker]: CFG has 4 edges. 4 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-17 22:29:56,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 10:29:56 BoogieIcfgContainer [2020-07-17 22:29:56,076 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 22:29:56,080 INFO L168 Benchmark]: Toolchain (without parser) took 2250.86 ms. Allocated memory was 137.9 MB in the beginning and 233.8 MB in the end (delta: 95.9 MB). Free memory was 100.7 MB in the beginning and 173.4 MB in the end (delta: -72.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-07-17 22:29:56,081 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 22:29:56,082 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.75 ms. Allocated memory is still 137.9 MB. Free memory was 100.3 MB in the beginning and 90.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-17 22:29:56,083 INFO L168 Benchmark]: Boogie Preprocessor took 121.08 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 90.4 MB in the beginning and 180.9 MB in the end (delta: -90.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-17 22:29:56,084 INFO L168 Benchmark]: RCFGBuilder took 362.28 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 163.7 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2020-07-17 22:29:56,085 INFO L168 Benchmark]: TraceAbstraction took 1497.88 ms. Allocated memory was 202.4 MB in the beginning and 233.8 MB in the end (delta: 31.5 MB). Free memory was 163.0 MB in the beginning and 173.4 MB in the end (delta: -10.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2020-07-17 22:29:56,088 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 0.27 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 261.75 ms. Allocated memory is still 137.9 MB. Free memory was 100.3 MB in the beginning and 90.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.08 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 90.4 MB in the beginning and 180.9 MB in the end (delta: -90.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 362.28 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 163.7 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1497.88 ms. Allocated memory was 202.4 MB in the beginning and 233.8 MB in the end (delta: 31.5 MB). Free memory was 163.0 MB in the beginning and 173.4 MB in the end (delta: -10.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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 - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 4 SDslu, 31 SDs, 0 SdLazy, 47 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 27 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 19 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 792 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...