/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/recursive-simple/sum_20x0-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 22:39:33,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 22:39:33,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 22:39:33,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 22:39:33,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 22:39:33,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 22:39:33,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 22:39:33,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 22:39:33,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 22:39:33,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 22:39:33,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 22:39:33,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 22:39:33,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 22:39:33,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 22:39:33,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 22:39:33,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 22:39:33,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 22:39:33,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 22:39:33,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 22:39:33,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 22:39:33,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 22:39:33,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 22:39:33,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 22:39:33,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 22:39:33,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 22:39:33,848 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 22:39:33,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 22:39:33,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 22:39:33,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 22:39:33,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 22:39:33,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 22:39:33,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 22:39:33,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 22:39:33,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 22:39:33,880 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 22:39:33,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 22:39:33,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 22:39:33,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 22:39:33,882 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 22:39:33,883 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 22:39:33,884 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 22:39:33,885 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 [2020-10-27 22:39:33,913 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 22:39:33,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 22:39:33,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 22:39:33,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 22:39:33,916 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 22:39:33,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 22:39:33,916 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 22:39:33,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 22:39:33,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 22:39:33,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 22:39:33,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 22:39:33,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 22:39:33,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 22:39:33,918 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 22:39:33,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 22:39:33,919 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 22:39:33,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 22:39:33,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 22:39:33,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 22:39:33,920 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 22:39:33,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 22:39:33,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:39:33,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 22:39:33,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 22:39:33,922 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 22:39:33,922 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 22:39:33,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 22:39:33,923 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 22:39:33,923 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 22:39:33,923 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 22:39:34,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 22:39:34,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 22:39:34,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 22:39:34,365 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 22:39:34,366 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 22:39:34,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_20x0-2.c [2020-10-27 22:39:34,477 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a20976e5/c01839832ab843e9a37230e6cb09d0cd/FLAGf45195db5 [2020-10-27 22:39:35,097 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 22:39:35,098 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_20x0-2.c [2020-10-27 22:39:35,105 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a20976e5/c01839832ab843e9a37230e6cb09d0cd/FLAGf45195db5 [2020-10-27 22:39:35,461 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a20976e5/c01839832ab843e9a37230e6cb09d0cd [2020-10-27 22:39:35,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 22:39:35,471 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 22:39:35,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 22:39:35,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 22:39:35,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 22:39:35,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:39:35" (1/1) ... [2020-10-27 22:39:35,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79cde77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:39:35, skipping insertion in model container [2020-10-27 22:39:35,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:39:35" (1/1) ... [2020-10-27 22:39:35,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 22:39:35,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 22:39:35,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:39:35,706 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 22:39:35,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:39:35,739 INFO L208 MainTranslator]: Completed translation [2020-10-27 22:39:35,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:39:35 WrapperNode [2020-10-27 22:39:35,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 22:39:35,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 22:39:35,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 22:39:35,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 22:39:35,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:39:35" (1/1) ... [2020-10-27 22:39:35,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:39:35" (1/1) ... [2020-10-27 22:39:35,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:39:35" (1/1) ... [2020-10-27 22:39:35,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:39:35" (1/1) ... [2020-10-27 22:39:35,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:39:35" (1/1) ... [2020-10-27 22:39:35,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:39:35" (1/1) ... [2020-10-27 22:39:35,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:39:35" (1/1) ... [2020-10-27 22:39:35,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 22:39:35,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 22:39:35,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 22:39:35,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 22:39:35,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:39:35" (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 [2020-10-27 22:39:35,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 22:39:35,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 22:39:35,863 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 22:39:35,863 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-10-27 22:39:35,863 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 22:39:35,864 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 22:39:35,864 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 22:39:35,864 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 22:39:35,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 22:39:35,864 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-10-27 22:39:35,864 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 22:39:35,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 22:39:35,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 22:39:35,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 22:39:35,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 22:39:35,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 22:39:35,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 22:39:36,140 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 22:39:36,140 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 22:39:36,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:39:36 BoogieIcfgContainer [2020-10-27 22:39:36,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 22:39:36,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 22:39:36,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 22:39:36,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 22:39:36,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 10:39:35" (1/3) ... [2020-10-27 22:39:36,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@255b912f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:39:36, skipping insertion in model container [2020-10-27 22:39:36,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:39:35" (2/3) ... [2020-10-27 22:39:36,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@255b912f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:39:36, skipping insertion in model container [2020-10-27 22:39:36,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:39:36" (3/3) ... [2020-10-27 22:39:36,154 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_20x0-2.c [2020-10-27 22:39:36,191 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 22:39:36,219 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 22:39:36,258 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 22:39:36,304 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 22:39:36,305 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 22:39:36,305 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 22:39:36,305 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 22:39:36,305 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 22:39:36,306 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 22:39:36,306 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 22:39:36,306 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 22:39:36,328 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-27 22:39:36,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 22:39:36,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:39:36,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:39:36,336 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:39:36,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:39:36,344 INFO L82 PathProgramCache]: Analyzing trace with hash -2012080153, now seen corresponding path program 1 times [2020-10-27 22:39:36,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:39:36,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22003350] [2020-10-27 22:39:36,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:39:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:39:36,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:39:36,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:39:37,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:39:37,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:39:37,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:39:37,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-10-27 22:39:37,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:39:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:39:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 22:39:37,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:39:37,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 22:39:37,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:39:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:39:37,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:39:37,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:39:37,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:39:37,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:39:37,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:39:37,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:39:37,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:39:37,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:39:37,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:39:37,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:39:37,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:39:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:39:37,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:39:37,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:39:37,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:39:37,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:39:37,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 22:39:37,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:39:37,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:39:37,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:39:37,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:39:37,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:39:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:39:37,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22003350] [2020-10-27 22:39:37,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:39:37,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 22:39:37,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781783052] [2020-10-27 22:39:37,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 22:39:37,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:39:37,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 22:39:37,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 22:39:37,344 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 7 states. [2020-10-27 22:39:37,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:39:37,706 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-10-27 22:39:37,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 22:39:37,708 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-27 22:39:37,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:39:37,719 INFO L225 Difference]: With dead ends: 36 [2020-10-27 22:39:37,719 INFO L226 Difference]: Without dead ends: 20 [2020-10-27 22:39:37,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:39:37,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-27 22:39:37,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-27 22:39:37,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-27 22:39:37,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-10-27 22:39:37,798 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 15 [2020-10-27 22:39:37,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:39:37,799 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-10-27 22:39:37,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 22:39:37,800 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-10-27 22:39:37,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 22:39:37,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:39:37,803 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:39:37,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 22:39:37,804 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:39:37,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:39:37,805 INFO L82 PathProgramCache]: Analyzing trace with hash -292229313, now seen corresponding path program 1 times [2020-10-27 22:39:37,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:39:37,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562736742] [2020-10-27 22:39:37,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:39:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:39:37,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:39:37,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:39:38,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:39:38,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 22:39:38,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:39:38,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-27 22:39:38,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:39:38,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:39:38,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 22:39:38,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:39:38,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:39:38,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:39:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:39:38,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:39:38,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:39:38,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:39:38,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:39:38,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:39:38,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:39:38,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:39:38,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:39:38,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:39:38,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:39:38,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:39:38,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:39:38,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:39:38,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:39:38,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 22:39:38,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:39:38,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 22:39:38,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:39:38,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:39:38,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:39:38,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 22:39:38,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:39:38,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:39:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:39:38,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:39:38,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:39:38,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:39:38,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:39:38,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 22:39:38,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:39:38,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:39:38,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:39:38,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:39:38,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:39:38,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 22:39:38,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562736742] [2020-10-27 22:39:38,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:39:38,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 22:39:38,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091407070] [2020-10-27 22:39:38,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:39:38,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:39:38,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:39:38,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:39:38,559 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 8 states. [2020-10-27 22:39:38,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:39:38,867 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-10-27 22:39:38,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 22:39:38,867 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-27 22:39:38,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:39:38,868 INFO L225 Difference]: With dead ends: 20 [2020-10-27 22:39:38,868 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 22:39:38,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:39:38,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 22:39:38,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 22:39:38,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 22:39:38,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 22:39:38,871 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-10-27 22:39:38,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:39:38,871 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 22:39:38,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:39:38,871 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 22:39:38,872 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 22:39:38,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 22:39:38,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 22:39:39,133 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-27 22:39:39,133 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-27 22:39:39,134 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-27 22:39:39,134 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-27 22:39:39,134 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 22:39:39,134 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-27 22:39:39,134 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 22:39:39,135 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 22:39:39,135 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 22:39:39,135 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 22:39:39,135 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 22:39:39,135 INFO L274 CegarLoopResult]: For program point sumEXIT(lines 5 11) no Hoare annotation was computed. [2020-10-27 22:39:39,135 INFO L270 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: (and (= sum_~n |sum_#in~n|) (= sum_~m |sum_#in~m|)) [2020-10-27 22:39:39,135 INFO L274 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-10-27 22:39:39,136 INFO L274 CegarLoopResult]: For program point L6(lines 6 10) no Hoare annotation was computed. [2020-10-27 22:39:39,136 INFO L274 CegarLoopResult]: For program point sumFINAL(lines 5 11) no Hoare annotation was computed. [2020-10-27 22:39:39,136 INFO L277 CegarLoopResult]: At program point sumENTRY(lines 5 11) the Hoare annotation is: true [2020-10-27 22:39:39,136 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 13 20) the Hoare annotation is: true [2020-10-27 22:39:39,136 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 13 20) no Hoare annotation was computed. [2020-10-27 22:39:39,136 INFO L270 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: false [2020-10-27 22:39:39,137 INFO L274 CegarLoopResult]: For program point L17(lines 17 19) no Hoare annotation was computed. [2020-10-27 22:39:39,137 INFO L274 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-10-27 22:39:39,137 INFO L277 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-10-27 22:39:39,137 INFO L274 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-10-27 22:39:39,137 INFO L274 CegarLoopResult]: For program point L17-2(lines 13 20) no Hoare annotation was computed. [2020-10-27 22:39:39,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 10:39:39 BoogieIcfgContainer [2020-10-27 22:39:39,143 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 22:39:39,146 INFO L168 Benchmark]: Toolchain (without parser) took 3678.03 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 126.4 MB in the beginning and 108.4 MB in the end (delta: 18.0 MB). Peak memory consumption was 62.3 MB. Max. memory is 8.0 GB. [2020-10-27 22:39:39,147 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 22:39:39,148 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.29 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-27 22:39:39,149 INFO L168 Benchmark]: Boogie Preprocessor took 34.48 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 114.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 22:39:39,150 INFO L168 Benchmark]: RCFGBuilder took 365.81 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 102.6 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 22:39:39,151 INFO L168 Benchmark]: TraceAbstraction took 2998.93 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 102.2 MB in the beginning and 108.4 MB in the end (delta: -6.2 MB). Peak memory consumption was 38.2 MB. Max. memory is 8.0 GB. [2020-10-27 22:39:39,155 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 267.29 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.48 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 114.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 365.81 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 102.6 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2998.93 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 102.2 MB in the beginning and 108.4 MB in the end (delta: -6.2 MB). Peak memory consumption was 38.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 27 SDslu, 57 SDs, 0 SdLazy, 116 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 12 PreInvPairs, 12 NumberOfFragments, 45 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 120 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 4020 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 4/4 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...