/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/loops/sum01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 15:18:43,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 15:18:43,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 15:18:43,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 15:18:43,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 15:18:43,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 15:18:43,337 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 15:18:43,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 15:18:43,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 15:18:43,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 15:18:43,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 15:18:43,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 15:18:43,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 15:18:43,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 15:18:43,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 15:18:43,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 15:18:43,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 15:18:43,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 15:18:43,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 15:18:43,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 15:18:43,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 15:18:43,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 15:18:43,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 15:18:43,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 15:18:43,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 15:18:43,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 15:18:43,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 15:18:43,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 15:18:43,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 15:18:43,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 15:18:43,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 15:18:43,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 15:18:43,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 15:18:43,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 15:18:43,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 15:18:43,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 15:18:43,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 15:18:43,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 15:18:43,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 15:18:43,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 15:18:43,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 15:18:43,458 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 [2020-10-28 15:18:43,505 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 15:18:43,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 15:18:43,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 15:18:43,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 15:18:43,508 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 15:18:43,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 15:18:43,509 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 15:18:43,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 15:18:43,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 15:18:43,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 15:18:43,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 15:18:43,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 15:18:43,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 15:18:43,510 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 15:18:43,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 15:18:43,511 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 15:18:43,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 15:18:43,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 15:18:43,511 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 15:18:43,512 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 15:18:43,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 15:18:43,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 15:18:43,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 15:18:43,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 15:18:43,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 15:18:43,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 15:18:43,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 15:18:43,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 15:18:43,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 15:18:43,514 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 15:18:43,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 15:18:43,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 15:18:43,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 15:18:43,903 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 15:18:43,904 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 15:18:43,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-2.i [2020-10-28 15:18:43,985 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc810bf72/087008d24a304d73ac37a4286895003f/FLAG1e7989f6c [2020-10-28 15:18:44,648 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 15:18:44,649 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum01-2.i [2020-10-28 15:18:44,656 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc810bf72/087008d24a304d73ac37a4286895003f/FLAG1e7989f6c [2020-10-28 15:18:44,990 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc810bf72/087008d24a304d73ac37a4286895003f [2020-10-28 15:18:44,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 15:18:45,000 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 15:18:45,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 15:18:45,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 15:18:45,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 15:18:45,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:18:44" (1/1) ... [2020-10-28 15:18:45,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63f80626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:18:45, skipping insertion in model container [2020-10-28 15:18:45,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:18:44" (1/1) ... [2020-10-28 15:18:45,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 15:18:45,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 15:18:45,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:18:45,267 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 15:18:45,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:18:45,300 INFO L208 MainTranslator]: Completed translation [2020-10-28 15:18:45,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:18:45 WrapperNode [2020-10-28 15:18:45,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 15:18:45,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 15:18:45,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 15:18:45,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 15:18:45,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:18:45" (1/1) ... [2020-10-28 15:18:45,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:18:45" (1/1) ... [2020-10-28 15:18:45,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:18:45" (1/1) ... [2020-10-28 15:18:45,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:18:45" (1/1) ... [2020-10-28 15:18:45,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:18:45" (1/1) ... [2020-10-28 15:18:45,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:18:45" (1/1) ... [2020-10-28 15:18:45,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:18:45" (1/1) ... [2020-10-28 15:18:45,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 15:18:45,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 15:18:45,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 15:18:45,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 15:18:45,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:18:45" (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 [2020-10-28 15:18:45,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 15:18:45,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 15:18:45,442 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 15:18:45,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 15:18:45,442 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 15:18:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 15:18:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 15:18:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 15:18:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 15:18:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 15:18:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 15:18:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 15:18:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 15:18:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 15:18:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 15:18:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 15:18:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 15:18:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 15:18:45,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 15:18:45,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 15:18:45,852 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 15:18:45,853 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 15:18:45,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:18:45 BoogieIcfgContainer [2020-10-28 15:18:45,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 15:18:45,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 15:18:45,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 15:18:45,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 15:18:45,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 03:18:44" (1/3) ... [2020-10-28 15:18:45,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22478038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:18:45, skipping insertion in model container [2020-10-28 15:18:45,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:18:45" (2/3) ... [2020-10-28 15:18:45,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22478038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:18:45, skipping insertion in model container [2020-10-28 15:18:45,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:18:45" (3/3) ... [2020-10-28 15:18:45,866 INFO L111 eAbstractionObserver]: Analyzing ICFG sum01-2.i [2020-10-28 15:18:45,878 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 15:18:45,884 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 15:18:45,899 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 15:18:45,926 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 15:18:45,926 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 15:18:45,926 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 15:18:45,926 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 15:18:45,927 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 15:18:45,927 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 15:18:45,927 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 15:18:45,927 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 15:18:45,944 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-28 15:18:45,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-28 15:18:45,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:18:45,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:18:45,950 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:18:45,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:18:45,957 INFO L82 PathProgramCache]: Analyzing trace with hash 584388675, now seen corresponding path program 1 times [2020-10-28 15:18:45,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:18:45,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491369464] [2020-10-28 15:18:45,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:18:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:18:46,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:46,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:18:46,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 15:18:46,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:18:46,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-28 15:18:46,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:18:46,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:18:46,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:18:46,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:18:46,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 15:18:46,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 15:18:46,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:18:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:18:46,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:46,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:18:46,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:18:46,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:18:46,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 15:18:46,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:18:46,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:18:46,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:18:46,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:18:46,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:18:46,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:18:46,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:18:46,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491369464] [2020-10-28 15:18:46,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:18:46,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:18:46,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547746617] [2020-10-28 15:18:46,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:18:46,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:18:46,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:18:46,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:18:46,680 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 6 states. [2020-10-28 15:18:47,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:18:47,021 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2020-10-28 15:18:47,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 15:18:47,023 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-28 15:18:47,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:18:47,030 INFO L225 Difference]: With dead ends: 46 [2020-10-28 15:18:47,031 INFO L226 Difference]: Without dead ends: 17 [2020-10-28 15:18:47,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:18:47,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-28 15:18:47,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-28 15:18:47,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-28 15:18:47,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-10-28 15:18:47,079 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2020-10-28 15:18:47,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:18:47,079 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-10-28 15:18:47,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:18:47,080 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-10-28 15:18:47,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-28 15:18:47,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:18:47,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:18:47,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 15:18:47,081 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:18:47,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:18:47,082 INFO L82 PathProgramCache]: Analyzing trace with hash -263554975, now seen corresponding path program 1 times [2020-10-28 15:18:47,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:18:47,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478809437] [2020-10-28 15:18:47,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:18:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:18:47,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:47,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:18:47,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 15:18:47,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:18:47,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-28 15:18:47,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:18:47,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:18:47,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 15:18:47,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:18:47,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 15:18:47,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:18:47,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:18:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:18:47,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:47,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:18:47,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:18:47,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:18:47,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:18:47,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:18:47,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:18:47,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:18:47,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:18:47,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:18:47,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:18:47,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:18:47,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478809437] [2020-10-28 15:18:47,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:18:47,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 15:18:47,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989665576] [2020-10-28 15:18:47,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 15:18:47,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:18:47,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 15:18:47,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:18:47,608 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 10 states. [2020-10-28 15:18:47,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:18:47,959 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-10-28 15:18:47,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 15:18:47,960 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-10-28 15:18:47,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:18:47,961 INFO L225 Difference]: With dead ends: 26 [2020-10-28 15:18:47,961 INFO L226 Difference]: Without dead ends: 19 [2020-10-28 15:18:47,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-10-28 15:18:47,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-28 15:18:47,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-28 15:18:47,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-28 15:18:47,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-28 15:18:47,970 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2020-10-28 15:18:47,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:18:47,970 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-28 15:18:47,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 15:18:47,971 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-28 15:18:47,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-28 15:18:47,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:18:47,972 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:18:47,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 15:18:47,972 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:18:47,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:18:47,973 INFO L82 PathProgramCache]: Analyzing trace with hash 906383615, now seen corresponding path program 2 times [2020-10-28 15:18:47,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:18:47,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971469088] [2020-10-28 15:18:47,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:18:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:18:47,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:48,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:18:48,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 15:18:48,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:18:48,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-28 15:18:48,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:18:48,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:18:48,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 15:18:48,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:18:48,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 15:18:48,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:18:48,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:18:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:18:48,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:48,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:18:48,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:18:48,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:18:48,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:18:48,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:18:48,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:18:48,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:18:48,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:18:48,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:18:48,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:18:48,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 15:18:48,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971469088] [2020-10-28 15:18:48,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:18:48,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 15:18:48,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428415503] [2020-10-28 15:18:48,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 15:18:48,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:18:48,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 15:18:48,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-28 15:18:48,419 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 11 states. [2020-10-28 15:18:48,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:18:48,800 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-10-28 15:18:48,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 15:18:48,801 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-10-28 15:18:48,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:18:48,801 INFO L225 Difference]: With dead ends: 19 [2020-10-28 15:18:48,802 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 15:18:48,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-10-28 15:18:48,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 15:18:48,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 15:18:48,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 15:18:48,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 15:18:48,804 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-28 15:18:48,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:18:48,804 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 15:18:48,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 15:18:48,804 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 15:18:48,804 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 15:18:48,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 15:18:48,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 15:18:48,999 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-28 15:18:49,000 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-28 15:18:49,000 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-28 15:18:49,000 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-28 15:18:49,000 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-28 15:18:49,001 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 15:18:49,001 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-28 15:18:49,001 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 15:18:49,001 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 15:18:49,001 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 15:18:49,002 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 15:18:49,002 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 15:18:49,002 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 22 29) the Hoare annotation is: true [2020-10-28 15:18:49,002 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 22 29) no Hoare annotation was computed. [2020-10-28 15:18:49,002 INFO L274 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-10-28 15:18:49,002 INFO L274 CegarLoopResult]: For program point L25-2(lines 25 27) no Hoare annotation was computed. [2020-10-28 15:18:49,003 INFO L270 CegarLoopResult]: At program point L25-3(lines 25 27) the Hoare annotation is: (let ((.cse1 (+ main_~sn~0 2)) (.cse0 (* 2 main_~i~0))) (and (or (= main_~sn~0 0) (< main_~sn~0 (+ (* 2 main_~n~0) 1))) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-10-28 15:18:49,003 INFO L270 CegarLoopResult]: At program point L25-4(lines 25 27) the Hoare annotation is: (or (= main_~sn~0 0) (let ((.cse0 (* 2 main_~n~0))) (and (<= .cse0 main_~sn~0) (< main_~sn~0 (+ .cse0 1))))) [2020-10-28 15:18:49,003 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 22 29) no Hoare annotation was computed. [2020-10-28 15:18:49,003 INFO L270 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-28 15:18:49,003 INFO L274 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-10-28 15:18:49,003 INFO L274 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-10-28 15:18:49,004 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 15 20) the Hoare annotation is: true [2020-10-28 15:18:49,004 INFO L274 CegarLoopResult]: For program point L16-2(lines 15 20) no Hoare annotation was computed. [2020-10-28 15:18:49,004 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 15 20) no Hoare annotation was computed. [2020-10-28 15:18:49,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 03:18:49 BoogieIcfgContainer [2020-10-28 15:18:49,021 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 15:18:49,024 INFO L168 Benchmark]: Toolchain (without parser) took 4027.86 ms. Allocated memory was 157.3 MB in the beginning and 200.3 MB in the end (delta: 43.0 MB). Free memory was 112.3 MB in the beginning and 135.4 MB in the end (delta: -23.1 MB). Peak memory consumption was 21.5 MB. Max. memory is 8.0 GB. [2020-10-28 15:18:49,025 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 157.3 MB. Free memory is still 129.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 15:18:49,026 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.78 ms. Allocated memory is still 157.3 MB. Free memory was 111.4 MB in the beginning and 102.4 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 15:18:49,027 INFO L168 Benchmark]: Boogie Preprocessor took 32.48 ms. Allocated memory is still 157.3 MB. Free memory was 101.9 MB in the beginning and 100.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 15:18:49,028 INFO L168 Benchmark]: RCFGBuilder took 521.48 ms. Allocated memory is still 157.3 MB. Free memory was 100.9 MB in the beginning and 126.5 MB in the end (delta: -25.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. [2020-10-28 15:18:49,029 INFO L168 Benchmark]: TraceAbstraction took 3163.23 ms. Allocated memory was 157.3 MB in the beginning and 200.3 MB in the end (delta: 43.0 MB). Free memory was 126.2 MB in the beginning and 135.4 MB in the end (delta: -9.2 MB). Peak memory consumption was 34.9 MB. Max. memory is 8.0 GB. [2020-10-28 15:18:49,032 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 ms. Allocated memory is still 157.3 MB. Free memory is still 129.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 298.78 ms. Allocated memory is still 157.3 MB. Free memory was 111.4 MB in the beginning and 102.4 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.48 ms. Allocated memory is still 157.3 MB. Free memory was 101.9 MB in the beginning and 100.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 521.48 ms. Allocated memory is still 157.3 MB. Free memory was 100.9 MB in the beginning and 126.5 MB in the end (delta: -25.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3163.23 ms. Allocated memory was 157.3 MB in the beginning and 200.3 MB in the end (delta: 43.0 MB). Free memory was 126.2 MB in the beginning and 135.4 MB in the end (delta: -9.2 MB). Peak memory consumption was 34.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 25]: Loop Invariant Derived loop invariant: ((sn == 0 || sn < 2 * n + 1) && 2 * i <= sn + 2) && sn + 2 <= 2 * i - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 36 SDtfs, 48 SDslu, 94 SDs, 0 SdLazy, 156 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.1s 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 17 PreInvPairs, 22 NumberOfFragments, 76 HoareAnnotationTreeSize, 17 FomulaSimplifications, 86 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 222 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 4793 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 1/5 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...