/usr/bin/java -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.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/multivar_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:20:54,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:20:54,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:20:54,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:20:54,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:20:54,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:20:54,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:20:54,217 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:20:54,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:20:54,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:20:54,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:20:54,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:20:54,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:20:54,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:20:54,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:20:54,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:20:54,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:20:54,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:20:54,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:20:54,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:20:54,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:20:54,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:20:54,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:20:54,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:20:54,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:20:54,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:20:54,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:20:54,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:20:54,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:20:54,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:20:54,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:20:54,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:20:54,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:20:54,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:20:54,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:20:54,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:20:54,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:20:54,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:20:54,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:20:54,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:20:54,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:20:54,277 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 17:20:54,339 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:20:54,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:20:54,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:20:54,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:20:54,342 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:20:54,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:20:54,343 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:20:54,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:20:54,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:20:54,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:20:54,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:20:54,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:20:54,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:20:54,346 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:20:54,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:20:54,346 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:20:54,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:20:54,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:20:54,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:20:54,347 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:20:54,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:20:54,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:20:54,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:20:54,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:20:54,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:20:54,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:20:54,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:20:54,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:20:54,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:20:54,349 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES 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: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; [2020-09-24 17:20:54,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:20:54,896 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:20:54,900 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:20:54,902 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:20:54,903 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:20:54,904 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/multivar_1-1.c [2020-09-24 17:20:54,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ab53da65/fea3646ef797478daded57cc8031a24d/FLAGdd78a0512 [2020-09-24 17:20:55,585 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:20:55,587 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/multivar_1-1.c [2020-09-24 17:20:55,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ab53da65/fea3646ef797478daded57cc8031a24d/FLAGdd78a0512 [2020-09-24 17:20:55,905 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ab53da65/fea3646ef797478daded57cc8031a24d [2020-09-24 17:20:55,919 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:20:55,924 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:20:55,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:20:55,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:20:55,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:20:55,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:20:55" (1/1) ... [2020-09-24 17:20:55,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c489c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:55, skipping insertion in model container [2020-09-24 17:20:55,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:20:55" (1/1) ... [2020-09-24 17:20:55,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:20:55,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:20:56,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:20:56,251 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:20:56,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:20:56,281 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:20:56,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:56 WrapperNode [2020-09-24 17:20:56,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:20:56,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:20:56,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:20:56,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:20:56,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:56" (1/1) ... [2020-09-24 17:20:56,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:56" (1/1) ... [2020-09-24 17:20:56,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:56" (1/1) ... [2020-09-24 17:20:56,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:56" (1/1) ... [2020-09-24 17:20:56,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:56" (1/1) ... [2020-09-24 17:20:56,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:56" (1/1) ... [2020-09-24 17:20:56,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:56" (1/1) ... [2020-09-24 17:20:56,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:20:56,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:20:56,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:20:56,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:20:56,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-24 17:20:56,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:20:56,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:20:56,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 17:20:56,467 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:20:56,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:20:56,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 17:20:56,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 17:20:56,468 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:20:56,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:20:56,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:20:56,670 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:20:56,678 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 17:20:56,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:20:56 BoogieIcfgContainer [2020-09-24 17:20:56,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:20:56,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:20:56,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:20:56,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:20:56,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:20:55" (1/3) ... [2020-09-24 17:20:56,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c81d6f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:20:56, skipping insertion in model container [2020-09-24 17:20:56,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:56" (2/3) ... [2020-09-24 17:20:56,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c81d6f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:20:56, skipping insertion in model container [2020-09-24 17:20:56,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:20:56" (3/3) ... [2020-09-24 17:20:56,719 INFO L109 eAbstractionObserver]: Analyzing ICFG multivar_1-1.c [2020-09-24 17:20:56,757 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:20:56,781 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:20:56,807 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:20:56,833 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:20:56,834 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:20:56,834 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:20:56,834 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:20:56,834 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:20:56,835 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:20:56,835 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:20:56,835 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:20:56,855 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-24 17:20:56,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-24 17:20:56,861 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:20:56,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:20:56,863 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:20:56,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:20:56,871 INFO L82 PathProgramCache]: Analyzing trace with hash 677098305, now seen corresponding path program 1 times [2020-09-24 17:20:56,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:20:56,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360232152] [2020-09-24 17:20:56,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:20:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:20:56,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:57,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:57,172 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:20:57,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:20:57,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:20:57,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-24 17:20:57,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:20:57,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:20:57,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 17:20:57,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:20:57,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-24 17:20:57,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:20:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:20:57,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:57,398 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:20:57,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:20:57,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:20:57,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:20:57,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:20:57,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:20:57,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:20:57,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:20:57,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:20:57,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:20:57,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360232152] [2020-09-24 17:20:57,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:20:57,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 17:20:57,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071082064] [2020-09-24 17:20:57,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 17:20:57,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:20:57,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 17:20:57,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:20:57,448 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-09-24 17:20:57,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:20:57,613 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2020-09-24 17:20:57,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 17:20:57,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-24 17:20:57,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:20:57,626 INFO L225 Difference]: With dead ends: 46 [2020-09-24 17:20:57,627 INFO L226 Difference]: Without dead ends: 22 [2020-09-24 17:20:57,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:20:57,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-24 17:20:57,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-09-24 17:20:57,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-09-24 17:20:57,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-09-24 17:20:57,677 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 12 [2020-09-24 17:20:57,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:20:57,678 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-09-24 17:20:57,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 17:20:57,678 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-09-24 17:20:57,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-24 17:20:57,679 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:20:57,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:20:57,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:20:57,680 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:20:57,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:20:57,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1021038377, now seen corresponding path program 1 times [2020-09-24 17:20:57,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:20:57,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064440051] [2020-09-24 17:20:57,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:20:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:20:57,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:58,046 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:20:58,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 17:20:58,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:20:58,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-09-24 17:20:58,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:20:58,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:20:58,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 17:20:58,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 17:20:58,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 17:20:58,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:20:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:20:58,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:58,311 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:20:58,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:20:58,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:20:58,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:20:58,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:20:58,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:20:58,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:20:58,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:20:58,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:20:58,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:20:58,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064440051] [2020-09-24 17:20:58,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:20:58,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 17:20:58,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774847404] [2020-09-24 17:20:58,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 17:20:58,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:20:58,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 17:20:58,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:20:58,352 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 9 states. [2020-09-24 17:20:58,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:20:58,512 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-09-24 17:20:58,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 17:20:58,513 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-09-24 17:20:58,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:20:58,513 INFO L225 Difference]: With dead ends: 20 [2020-09-24 17:20:58,514 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 17:20:58,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-09-24 17:20:58,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 17:20:58,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 17:20:58,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 17:20:58,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 17:20:58,520 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-09-24 17:20:58,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:20:58,520 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 17:20:58,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 17:20:58,520 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 17:20:58,520 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 17:20:58,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:20:58,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 17:20:58,610 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 17:20:58,611 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 17:20:58,611 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 17:20:58,611 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 17:20:58,611 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 17:20:58,611 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 17:20:58,612 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 21) the Hoare annotation is: true [2020-09-24 17:20:58,612 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 21) no Hoare annotation was computed. [2020-09-24 17:20:58,612 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 17:20:58,612 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 17:20:58,612 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 17:20:58,612 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 17:20:58,613 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-24 17:20:58,613 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 17:20:58,613 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 17:20:58,613 INFO L264 CegarLoopResult]: At program point L15-2(lines 15 18) the Hoare annotation is: (= main_~y~0 main_~x~0) [2020-09-24 17:20:58,613 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 21) no Hoare annotation was computed. [2020-09-24 17:20:58,613 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 17:20:58,614 INFO L264 CegarLoopResult]: At program point L15-3(lines 15 18) the Hoare annotation is: (let ((.cse1 (* 4294967296 (div main_~x~0 4294967296))) (.cse0 (+ main_~x~0 (* 4294967296 (div main_~y~0 4294967296))))) (and (< .cse0 (+ main_~y~0 .cse1 1)) (<= (+ main_~y~0 .cse1) .cse0) (<= main_~y~0 main_~x~0))) [2020-09-24 17:20:58,614 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-09-24 17:20:58,614 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2020-09-24 17:20:58,614 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 17:20:58,614 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-09-24 17:20:58,615 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-09-24 17:20:58,615 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2020-09-24 17:20:58,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 05:20:58 BoogieIcfgContainer [2020-09-24 17:20:58,637 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 17:20:58,641 INFO L168 Benchmark]: Toolchain (without parser) took 2718.61 ms. Allocated memory was 140.0 MB in the beginning and 234.9 MB in the end (delta: 94.9 MB). Free memory was 101.9 MB in the beginning and 183.8 MB in the end (delta: -81.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-24 17:20:58,642 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 17:20:58,643 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.40 ms. Allocated memory is still 140.0 MB. Free memory was 101.2 MB in the beginning and 91.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-24 17:20:58,644 INFO L168 Benchmark]: Boogie Preprocessor took 111.30 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 91.9 MB in the beginning and 181.0 MB in the end (delta: -89.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-09-24 17:20:58,645 INFO L168 Benchmark]: RCFGBuilder took 293.48 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 169.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2020-09-24 17:20:58,646 INFO L168 Benchmark]: TraceAbstraction took 1935.51 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 168.7 MB in the beginning and 183.8 MB in the end (delta: -15.1 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. [2020-09-24 17:20:58,650 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 357.40 ms. Allocated memory is still 140.0 MB. Free memory was 101.2 MB in the beginning and 91.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.30 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 91.9 MB in the beginning and 181.0 MB in the end (delta: -89.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 293.48 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 169.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1935.51 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 168.7 MB in the beginning and 183.8 MB in the end (delta: -15.1 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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: 15]: Loop Invariant Derived loop invariant: y == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 17 SDslu, 101 SDs, 0 SdLazy, 72 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 43 HoareAnnotationTreeSize, 9 FomulaSimplifications, 39 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 3815 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1 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...