/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/loop-acceleration/simple_3-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 04:26:51,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 04:26:51,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 04:26:51,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 04:26:51,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 04:26:51,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 04:26:51,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 04:26:51,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 04:26:51,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 04:26:51,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 04:26:51,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 04:26:51,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 04:26:51,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 04:26:51,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 04:26:51,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 04:26:51,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 04:26:51,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 04:26:51,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 04:26:51,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 04:26:51,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 04:26:51,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 04:26:51,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 04:26:51,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 04:26:51,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 04:26:51,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 04:26:51,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 04:26:51,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 04:26:51,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 04:26:51,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 04:26:51,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 04:26:51,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 04:26:51,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 04:26:51,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 04:26:51,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 04:26:51,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 04:26:51,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 04:26:51,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 04:26:51,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 04:26:51,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 04:26:51,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 04:26:51,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 04:26:51,957 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 04:26:51,985 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 04:26:51,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 04:26:51,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 04:26:51,987 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 04:26:51,988 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 04:26:51,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 04:26:51,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 04:26:51,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 04:26:51,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 04:26:51,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 04:26:51,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 04:26:51,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 04:26:51,990 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 04:26:51,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 04:26:51,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 04:26:51,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 04:26:51,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 04:26:51,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:26:51,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 04:26:51,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 04:26:51,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 04:26:51,992 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 04:26:51,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 04:26:51,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 04:26:51,993 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 04:26:51,993 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 04:26:52,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 04:26:52,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 04:26:52,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 04:26:52,492 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 04:26:52,493 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 04:26:52,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/simple_3-1.c [2020-12-22 04:26:52,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fdd4b9f2/b9ae20703bb54ab6981642ce54e033be/FLAG25e12edbb [2020-12-22 04:26:53,221 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 04:26:53,222 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/simple_3-1.c [2020-12-22 04:26:53,229 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fdd4b9f2/b9ae20703bb54ab6981642ce54e033be/FLAG25e12edbb [2020-12-22 04:26:53,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fdd4b9f2/b9ae20703bb54ab6981642ce54e033be [2020-12-22 04:26:53,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 04:26:53,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 04:26:53,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 04:26:53,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 04:26:53,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 04:26:53,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:26:53" (1/1) ... [2020-12-22 04:26:53,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@367d5fc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:26:53, skipping insertion in model container [2020-12-22 04:26:53,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:26:53" (1/1) ... [2020-12-22 04:26:53,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 04:26:53,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 04:26:53,784 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/simple_3-1.c[376,389] [2020-12-22 04:26:53,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:26:53,806 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 04:26:53,820 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/simple_3-1.c[376,389] [2020-12-22 04:26:53,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:26:53,838 INFO L208 MainTranslator]: Completed translation [2020-12-22 04:26:53,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:26:53 WrapperNode [2020-12-22 04:26:53,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 04:26:53,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 04:26:53,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 04:26:53,841 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 04:26:53,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:26:53" (1/1) ... [2020-12-22 04:26:53,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:26:53" (1/1) ... [2020-12-22 04:26:53,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 04:26:53,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 04:26:53,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 04:26:53,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 04:26:53,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:26:53" (1/1) ... [2020-12-22 04:26:53,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:26:53" (1/1) ... [2020-12-22 04:26:53,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:26:53" (1/1) ... [2020-12-22 04:26:53,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:26:53" (1/1) ... [2020-12-22 04:26:53,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:26:53" (1/1) ... [2020-12-22 04:26:53,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:26:53" (1/1) ... [2020-12-22 04:26:53,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:26:53" (1/1) ... [2020-12-22 04:26:53,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 04:26:53,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 04:26:53,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 04:26:53,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 04:26:53,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:26:53" (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 [2020-12-22 04:26:54,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 04:26:54,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 04:26:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 04:26:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 04:26:54,210 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 04:26:54,211 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-22 04:26:54,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:26:54 BoogieIcfgContainer [2020-12-22 04:26:54,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 04:26:54,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 04:26:54,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 04:26:54,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 04:26:54,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:26:53" (1/3) ... [2020-12-22 04:26:54,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f7d43e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:26:54, skipping insertion in model container [2020-12-22 04:26:54,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:26:53" (2/3) ... [2020-12-22 04:26:54,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f7d43e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:26:54, skipping insertion in model container [2020-12-22 04:26:54,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:26:54" (3/3) ... [2020-12-22 04:26:54,235 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_3-1.c [2020-12-22 04:26:54,250 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 04:26:54,255 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 04:26:54,276 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 04:26:54,304 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 04:26:54,304 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 04:26:54,304 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 04:26:54,305 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 04:26:54,305 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 04:26:54,305 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 04:26:54,305 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 04:26:54,305 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 04:26:54,321 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-12-22 04:26:54,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 04:26:54,327 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:26:54,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 04:26:54,348 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:26:54,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:26:54,376 INFO L82 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2020-12-22 04:26:54,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:26:54,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342858112] [2020-12-22 04:26:54,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:26:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 04:26:54,560 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 04:26:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 04:26:54,602 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 04:26:54,638 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 04:26:54,639 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 04:26:54,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 04:26:54,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:26:54 BoogieIcfgContainer [2020-12-22 04:26:54,670 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 04:26:54,673 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 04:26:54,673 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 04:26:54,673 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 04:26:54,674 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:26:54" (3/4) ... [2020-12-22 04:26:54,676 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 04:26:54,754 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loop-acceleration/simple_3-1.c-witness.graphml [2020-12-22 04:26:54,755 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 04:26:54,760 INFO L168 Benchmark]: Toolchain (without parser) took 1154.92 ms. Allocated memory is still 155.2 MB. Free memory was 130.7 MB in the beginning and 128.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:26:54,761 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 155.2 MB. Free memory is still 127.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:26:54,764 INFO L168 Benchmark]: CACSL2BoogieTranslator took 234.03 ms. Allocated memory is still 155.2 MB. Free memory was 130.4 MB in the beginning and 121.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 04:26:54,769 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.96 ms. Allocated memory is still 155.2 MB. Free memory was 121.0 MB in the beginning and 119.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:26:54,770 INFO L168 Benchmark]: Boogie Preprocessor took 21.59 ms. Allocated memory is still 155.2 MB. Free memory was 119.7 MB in the beginning and 118.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:26:54,770 INFO L168 Benchmark]: RCFGBuilder took 313.73 ms. Allocated memory is still 155.2 MB. Free memory was 118.7 MB in the beginning and 107.4 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-22 04:26:54,773 INFO L168 Benchmark]: TraceAbstraction took 453.42 ms. Allocated memory is still 155.2 MB. Free memory was 106.9 MB in the beginning and 130.4 MB in the end (delta: -23.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:26:54,774 INFO L168 Benchmark]: Witness Printer took 82.98 ms. Allocated memory is still 155.2 MB. Free memory was 130.4 MB in the beginning and 128.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 04:26:54,781 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 155.2 MB. Free memory is still 127.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 234.03 ms. Allocated memory is still 155.2 MB. Free memory was 130.4 MB in the beginning and 121.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 37.96 ms. Allocated memory is still 155.2 MB. Free memory was 121.0 MB in the beginning and 119.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 21.59 ms. Allocated memory is still 155.2 MB. Free memory was 119.7 MB in the beginning and 118.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 313.73 ms. Allocated memory is still 155.2 MB. Free memory was 118.7 MB in the beginning and 107.4 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 453.42 ms. Allocated memory is still 155.2 MB. Free memory was 106.9 MB in the beginning and 130.4 MB in the end (delta: -23.5 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 82.98 ms. Allocated memory is still 155.2 MB. Free memory was 130.4 MB in the beginning and 128.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] unsigned int x = 0; [L15] unsigned short N = __VERIFIER_nondet_ushort(); [L17] COND FALSE !(x < N) [L7] COND TRUE !(cond) [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...