/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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 [2020-10-29 12:11:50,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:11:50,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:11:50,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:11:50,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:11:50,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:11:50,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:11:50,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:11:50,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:11:50,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:11:50,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:11:50,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:11:50,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:11:50,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:11:50,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:11:50,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:11:50,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:11:50,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:11:50,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:11:50,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:11:50,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:11:50,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:11:50,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:11:50,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:11:50,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:11:50,250 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:11:50,250 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:11:50,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:11:50,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:11:50,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:11:50,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:11:50,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:11:50,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:11:50,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:11:50,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:11:50,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:11:50,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:11:50,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:11:50,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:11:50,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:11:50,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:11:50,270 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 [2020-10-29 12:11:50,330 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:11:50,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:11:50,333 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:11:50,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:11:50,335 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:11:50,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:11:50,335 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:11:50,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:11:50,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:11:50,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:11:50,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:11:50,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:11:50,337 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:11:50,337 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:11:50,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:11:50,338 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:11:50,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:11:50,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:11:50,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:11:50,339 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:11:50,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:11:50,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:11:50,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:11:50,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:11:50,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:11:50,340 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:11:50,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:11:50,340 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:11:50,341 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:11:50,341 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:11:50,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:11:50,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:11:50,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:11:50,814 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:11:50,819 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:11:50,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_20x0-2.c [2020-10-29 12:11:50,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0bb0bdc61/81f3f7bf7deb41249a2fb9e356c37630/FLAG0edf9a0d4 [2020-10-29 12:11:51,495 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:11:51,495 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_20x0-2.c [2020-10-29 12:11:51,503 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0bb0bdc61/81f3f7bf7deb41249a2fb9e356c37630/FLAG0edf9a0d4 [2020-10-29 12:11:51,830 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0bb0bdc61/81f3f7bf7deb41249a2fb9e356c37630 [2020-10-29 12:11:51,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:11:51,839 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:11:51,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:11:51,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:11:51,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:11:51,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:11:51" (1/1) ... [2020-10-29 12:11:51,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@292dc09c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:51, skipping insertion in model container [2020-10-29 12:11:51,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:11:51" (1/1) ... [2020-10-29 12:11:51,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:11:51,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:11:52,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:11:52,092 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:11:52,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:11:52,135 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:11:52,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:52 WrapperNode [2020-10-29 12:11:52,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:11:52,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:11:52,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:11:52,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:11:52,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:52" (1/1) ... [2020-10-29 12:11:52,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:52" (1/1) ... [2020-10-29 12:11:52,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:52" (1/1) ... [2020-10-29 12:11:52,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:52" (1/1) ... [2020-10-29 12:11:52,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:52" (1/1) ... [2020-10-29 12:11:52,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:52" (1/1) ... [2020-10-29 12:11:52,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:52" (1/1) ... [2020-10-29 12:11:52,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:11:52,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:11:52,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:11:52,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:11:52,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:52" (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 [2020-10-29 12:11:52,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:11:52,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:11:52,316 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:11:52,316 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-10-29 12:11:52,316 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:11:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:11:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:11:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:11:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:11:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-10-29 12:11:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:11:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:11:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:11:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:11:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:11:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:11:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:11:52,567 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:11:52,567 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 12:11:52,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:11:52 BoogieIcfgContainer [2020-10-29 12:11:52,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:11:52,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:11:52,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:11:52,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:11:52,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:11:51" (1/3) ... [2020-10-29 12:11:52,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3aa32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:11:52, skipping insertion in model container [2020-10-29 12:11:52,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:52" (2/3) ... [2020-10-29 12:11:52,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3aa32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:11:52, skipping insertion in model container [2020-10-29 12:11:52,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:11:52" (3/3) ... [2020-10-29 12:11:52,578 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_20x0-2.c [2020-10-29 12:11:52,591 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:11:52,596 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:11:52,611 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:11:52,682 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:11:52,683 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:11:52,683 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:11:52,685 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:11:52,685 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:11:52,686 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:11:52,686 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:11:52,686 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:11:52,735 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-29 12:11:52,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 12:11:52,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:11:52,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:11:52,751 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:11:52,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:11:52,768 INFO L82 PathProgramCache]: Analyzing trace with hash -2012080153, now seen corresponding path program 1 times [2020-10-29 12:11:52,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:11:52,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807819274] [2020-10-29 12:11:52,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:11:52,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:53,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:53,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:53,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:53,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:11:53,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:11:53,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-10-29 12:11:53,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:53,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:53,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:11:53,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:11:53,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:11:53,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:11:53,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:11:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:53,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:53,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:53,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:11:53,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:53,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:11:53,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:53,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:53,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:11:53,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:53,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:11:53,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:53,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:11:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:53,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:53,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:53,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:11:53,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:53,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:11:53,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:53,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:53,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:11:53,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:11:53,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:11:53,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:53,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:11:53,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807819274] [2020-10-29 12:11:53,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:11:53,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 12:11:53,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572808776] [2020-10-29 12:11:53,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:11:53,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:11:53,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:11:53,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:11:53,748 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 6 states. [2020-10-29 12:11:53,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:11:53,987 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-10-29 12:11:53,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:11:53,989 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-29 12:11:53,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:11:54,000 INFO L225 Difference]: With dead ends: 36 [2020-10-29 12:11:54,000 INFO L226 Difference]: Without dead ends: 20 [2020-10-29 12:11:54,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:11:54,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-29 12:11:54,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-29 12:11:54,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-29 12:11:54,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-10-29 12:11:54,054 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 15 [2020-10-29 12:11:54,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:11:54,055 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-10-29 12:11:54,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:11:54,055 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-10-29 12:11:54,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 12:11:54,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:11:54,057 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:11:54,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:11:54,058 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:11:54,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:11:54,059 INFO L82 PathProgramCache]: Analyzing trace with hash -292229313, now seen corresponding path program 1 times [2020-10-29 12:11:54,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:11:54,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949714859] [2020-10-29 12:11:54,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:11:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:54,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:54,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:54,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:54,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 12:11:54,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:11:54,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 578 [2020-10-29 12:11:54,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:54,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:54,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:11:54,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 12:11:54,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:11:54,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:54,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:11:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:54,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:54,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:54,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:11:54,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:54,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:11:54,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:54,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:54,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:11:54,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:54,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:11:54,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:54,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:11:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:54,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:54,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:54,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:11:54,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:54,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 12:11:54,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:54,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:54,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:11:54,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:54,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:11:54,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:54,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:54,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:54,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:54,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:11:54,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:54,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 12:11:54,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:54,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:54,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:11:54,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:54,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:11:54,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:54,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 12:11:54,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949714859] [2020-10-29 12:11:54,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:11:54,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 12:11:54,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374397379] [2020-10-29 12:11:54,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:11:54,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:11:54,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:11:54,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:11:54,965 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 9 states. [2020-10-29 12:11:55,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:11:55,238 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-10-29 12:11:55,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:11:55,239 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-29 12:11:55,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:11:55,240 INFO L225 Difference]: With dead ends: 20 [2020-10-29 12:11:55,240 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 12:11:55,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:11:55,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 12:11:55,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 12:11:55,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 12:11:55,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 12:11:55,242 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-10-29 12:11:55,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:11:55,243 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 12:11:55,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:11:55,243 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 12:11:55,243 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 12:11:55,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:11:55,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 12:11:55,360 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-29 12:11:55,360 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-29 12:11:55,360 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-29 12:11:55,360 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-29 12:11:55,361 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-29 12:11:55,361 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|)) [2020-10-29 12:11:55,361 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-29 12:11:55,361 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-29 12:11:55,361 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-29 12:11:55,361 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-29 12:11:55,362 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-29 12:11:55,362 INFO L274 CegarLoopResult]: For program point sumEXIT(lines 5 11) no Hoare annotation was computed. [2020-10-29 12:11:55,362 INFO L270 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: (and (= sum_~n |sum_#in~n|) (= sum_~m |sum_#in~m|)) [2020-10-29 12:11:55,362 INFO L274 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-10-29 12:11:55,362 INFO L274 CegarLoopResult]: For program point L6(lines 6 10) no Hoare annotation was computed. [2020-10-29 12:11:55,362 INFO L274 CegarLoopResult]: For program point sumFINAL(lines 5 11) no Hoare annotation was computed. [2020-10-29 12:11:55,363 INFO L277 CegarLoopResult]: At program point sumENTRY(lines 5 11) the Hoare annotation is: true [2020-10-29 12:11:55,363 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 13 20) the Hoare annotation is: true [2020-10-29 12:11:55,363 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 13 20) no Hoare annotation was computed. [2020-10-29 12:11:55,363 INFO L270 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: false [2020-10-29 12:11:55,363 INFO L274 CegarLoopResult]: For program point L17(lines 17 19) no Hoare annotation was computed. [2020-10-29 12:11:55,363 INFO L274 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-10-29 12:11:55,364 INFO L270 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (= main_~a~0 20) [2020-10-29 12:11:55,364 INFO L274 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-10-29 12:11:55,364 INFO L274 CegarLoopResult]: For program point L17-2(lines 13 20) no Hoare annotation was computed. [2020-10-29 12:11:55,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 12:11:55 BoogieIcfgContainer [2020-10-29 12:11:55,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 12:11:55,373 INFO L168 Benchmark]: Toolchain (without parser) took 3537.26 ms. Allocated memory was 155.2 MB in the beginning and 199.2 MB in the end (delta: 44.0 MB). Free memory was 110.0 MB in the beginning and 84.2 MB in the end (delta: 25.7 MB). Peak memory consumption was 70.7 MB. Max. memory is 8.0 GB. [2020-10-29 12:11:55,374 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 155.2 MB. Free memory was 126.7 MB in the beginning and 126.3 MB in the end (delta: 429.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 12:11:55,375 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.35 ms. Allocated memory is still 155.2 MB. Free memory was 109.3 MB in the beginning and 99.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 12:11:55,376 INFO L168 Benchmark]: Boogie Preprocessor took 54.44 ms. Allocated memory is still 155.2 MB. Free memory was 99.9 MB in the beginning and 98.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-29 12:11:55,377 INFO L168 Benchmark]: RCFGBuilder took 374.63 ms. Allocated memory is still 155.2 MB. Free memory was 98.4 MB in the beginning and 125.9 MB in the end (delta: -27.5 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-29 12:11:55,379 INFO L168 Benchmark]: TraceAbstraction took 2799.01 ms. Allocated memory was 155.2 MB in the beginning and 199.2 MB in the end (delta: 44.0 MB). Free memory was 125.4 MB in the beginning and 84.2 MB in the end (delta: 41.2 MB). Peak memory consumption was 86.7 MB. Max. memory is 8.0 GB. [2020-10-29 12:11:55,382 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 155.2 MB. Free memory was 126.7 MB in the beginning and 126.3 MB in the end (delta: 429.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 297.35 ms. Allocated memory is still 155.2 MB. Free memory was 109.3 MB in the beginning and 99.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 54.44 ms. Allocated memory is still 155.2 MB. Free memory was 99.9 MB in the beginning and 98.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 374.63 ms. Allocated memory is still 155.2 MB. Free memory was 98.4 MB in the beginning and 125.9 MB in the end (delta: -27.5 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2799.01 ms. Allocated memory was 155.2 MB in the beginning and 199.2 MB in the end (delta: 44.0 MB). Free memory was 125.4 MB in the beginning and 84.2 MB in the end (delta: 41.2 MB). Peak memory consumption was 86.7 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: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 31 SDslu, 49 SDs, 0 SdLazy, 97 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s 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, 47 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 121 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 3648 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 3/4 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...