/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:49:12,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:49:12,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:49:12,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:49:12,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:49:12,206 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:49:12,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:49:12,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:49:12,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:49:12,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:49:12,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:49:12,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:49:12,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:49:12,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:49:12,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:49:12,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:49:12,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:49:12,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:49:12,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:49:12,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:49:12,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:49:12,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:49:12,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:49:12,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:49:12,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 18:49:12,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 18:49:12,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 18:49:12,256 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 18:49:12,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 18:49:12,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 18:49:12,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 18:49:12,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 18:49:12,261 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 18:49:12,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 18:49:12,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 18:49:12,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 18:49:12,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 18:49:12,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 18:49:12,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:49:12,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:49:12,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:49:12,268 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 [2020-08-18 18:49:12,305 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:49:12,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:49:12,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:49:12,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:49:12,309 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:49:12,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:49:12,309 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:49:12,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:49:12,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:49:12,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:49:12,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:49:12,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:49:12,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:49:12,311 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:49:12,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:49:12,312 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:49:12,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:49:12,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:49:12,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:49:12,313 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:49:12,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:49:12,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:49:12,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:49:12,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:49:12,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:49:12,314 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:49:12,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:49:12,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:49:12,314 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:49:12,315 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:49:12,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:49:12,662 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:49:12,665 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:49:12,667 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:49:12,667 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:49:12,668 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i [2020-08-18 18:49:12,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28e7fae23/6e2c5fb84355402fbf6335059c9e8648/FLAGcf00c8473 [2020-08-18 18:49:13,171 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:49:13,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i [2020-08-18 18:49:13,181 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28e7fae23/6e2c5fb84355402fbf6335059c9e8648/FLAGcf00c8473 [2020-08-18 18:49:13,556 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28e7fae23/6e2c5fb84355402fbf6335059c9e8648 [2020-08-18 18:49:13,568 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:49:13,570 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:49:13,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:49:13,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:49:13,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:49:13,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:49:13" (1/1) ... [2020-08-18 18:49:13,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d98017f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:13, skipping insertion in model container [2020-08-18 18:49:13,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:49:13" (1/1) ... [2020-08-18 18:49:13,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:49:13,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:49:13,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:49:13,787 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:49:13,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:49:13,821 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:49:13,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:13 WrapperNode [2020-08-18 18:49:13,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:49:13,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:49:13,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:49:13,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:49:13,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:13" (1/1) ... [2020-08-18 18:49:13,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:13" (1/1) ... [2020-08-18 18:49:13,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:13" (1/1) ... [2020-08-18 18:49:13,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:13" (1/1) ... [2020-08-18 18:49:13,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:13" (1/1) ... [2020-08-18 18:49:13,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:13" (1/1) ... [2020-08-18 18:49:13,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:13" (1/1) ... [2020-08-18 18:49:13,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:49:13,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:49:13,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:49:13,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:49:13,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:13" (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 [2020-08-18 18:49:14,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:49:14,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:49:14,008 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 18:49:14,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 18:49:14,009 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:49:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:49:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 18:49:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 18:49:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 18:49:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 18:49:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:49:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:49:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:49:14,267 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:49:14,267 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 18:49:14,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:49:14 BoogieIcfgContainer [2020-08-18 18:49:14,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:49:14,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:49:14,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:49:14,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:49:14,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:49:13" (1/3) ... [2020-08-18 18:49:14,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d33bbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:49:14, skipping insertion in model container [2020-08-18 18:49:14,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:13" (2/3) ... [2020-08-18 18:49:14,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d33bbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:49:14, skipping insertion in model container [2020-08-18 18:49:14,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:49:14" (3/3) ... [2020-08-18 18:49:14,286 INFO L109 eAbstractionObserver]: Analyzing ICFG MADWiFi-encode_ie_ok.i [2020-08-18 18:49:14,301 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:49:14,308 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:49:14,338 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:49:14,369 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:49:14,369 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:49:14,369 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:49:14,370 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:49:14,370 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:49:14,370 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:49:14,370 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:49:14,370 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:49:14,393 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-08-18 18:49:14,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 18:49:14,399 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:49:14,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:49:14,400 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:49:14,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:49:14,406 INFO L82 PathProgramCache]: Analyzing trace with hash 921445730, now seen corresponding path program 1 times [2020-08-18 18:49:14,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:49:14,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127756619] [2020-08-18 18:49:14,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:49:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:14,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:49:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:14,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:49:14,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127756619] [2020-08-18 18:49:14,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:49:14,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 18:49:14,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749896960] [2020-08-18 18:49:14,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:49:14,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:49:14,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:49:14,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:49:14,774 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 6 states. [2020-08-18 18:49:14,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:49:14,938 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2020-08-18 18:49:14,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 18:49:14,940 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-18 18:49:14,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:49:14,948 INFO L225 Difference]: With dead ends: 51 [2020-08-18 18:49:14,949 INFO L226 Difference]: Without dead ends: 28 [2020-08-18 18:49:14,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:49:14,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-18 18:49:14,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-08-18 18:49:14,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-18 18:49:14,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-08-18 18:49:14,996 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 18 [2020-08-18 18:49:14,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:49:14,997 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-08-18 18:49:14,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:49:14,997 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-08-18 18:49:14,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-18 18:49:14,998 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:49:14,998 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:49:14,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:49:14,999 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:49:15,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:49:15,000 INFO L82 PathProgramCache]: Analyzing trace with hash 487181509, now seen corresponding path program 1 times [2020-08-18 18:49:15,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:49:15,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607145395] [2020-08-18 18:49:15,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:49:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:15,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:49:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:15,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 18:49:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:49:15,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607145395] [2020-08-18 18:49:15,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:49:15,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 18:49:15,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834975422] [2020-08-18 18:49:15,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:49:15,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:49:15,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:49:15,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:49:15,113 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 6 states. [2020-08-18 18:49:15,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:49:15,199 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2020-08-18 18:49:15,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 18:49:15,200 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-08-18 18:49:15,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:49:15,202 INFO L225 Difference]: With dead ends: 38 [2020-08-18 18:49:15,203 INFO L226 Difference]: Without dead ends: 36 [2020-08-18 18:49:15,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:49:15,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-18 18:49:15,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-08-18 18:49:15,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-18 18:49:15,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-08-18 18:49:15,220 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 23 [2020-08-18 18:49:15,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:49:15,221 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-08-18 18:49:15,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:49:15,221 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-08-18 18:49:15,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-18 18:49:15,223 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:49:15,223 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:49:15,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:49:15,224 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:49:15,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:49:15,225 INFO L82 PathProgramCache]: Analyzing trace with hash 258938125, now seen corresponding path program 1 times [2020-08-18 18:49:15,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:49:15,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293609288] [2020-08-18 18:49:15,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:49:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:15,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:49:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:15,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 18:49:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:15,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 18:49:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:15,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 18:49:15,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:15,453 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 18:49:15,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293609288] [2020-08-18 18:49:15,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:49:15,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-18 18:49:15,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033441448] [2020-08-18 18:49:15,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 18:49:15,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:49:15,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 18:49:15,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:49:15,459 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 8 states. [2020-08-18 18:49:15,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:49:15,623 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-08-18 18:49:15,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 18:49:15,623 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-08-18 18:49:15,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:49:15,624 INFO L225 Difference]: With dead ends: 36 [2020-08-18 18:49:15,624 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 18:49:15,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-08-18 18:49:15,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 18:49:15,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 18:49:15,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 18:49:15,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 18:49:15,627 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2020-08-18 18:49:15,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:49:15,627 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 18:49:15,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 18:49:15,627 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 18:49:15,628 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 18:49:15,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:49:15,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 18:49:15,694 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-18 18:49:15,694 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 18:49:15,694 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 18:49:15,694 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 18:49:15,694 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 18:49:15,695 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 18:49:15,695 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-18 18:49:15,695 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-18 18:49:15,695 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-08-18 18:49:15,695 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-18 18:49:15,695 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-08-18 18:49:15,696 INFO L268 CegarLoopResult]: For program point L27-1(lines 14 45) no Hoare annotation was computed. [2020-08-18 18:49:15,696 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 45) no Hoare annotation was computed. [2020-08-18 18:49:15,696 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-08-18 18:49:15,696 INFO L268 CegarLoopResult]: For program point L36(lines 36 37) no Hoare annotation was computed. [2020-08-18 18:49:15,696 INFO L268 CegarLoopResult]: For program point L28(lines 14 45) no Hoare annotation was computed. [2020-08-18 18:49:15,696 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-08-18 18:49:15,697 INFO L268 CegarLoopResult]: For program point L29(lines 14 45) no Hoare annotation was computed. [2020-08-18 18:49:15,697 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-08-18 18:49:15,697 INFO L268 CegarLoopResult]: For program point L38-2(lines 38 42) no Hoare annotation was computed. [2020-08-18 18:49:15,697 INFO L264 CegarLoopResult]: At program point L38-3(lines 38 42) the Hoare annotation is: (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= (+ (* 2 main_~ielen~0) main_~p~0) (+ main_~bufsize_0~0 (* 2 main_~i~0)))) [2020-08-18 18:49:15,697 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 45) the Hoare annotation is: true [2020-08-18 18:49:15,698 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-08-18 18:49:15,698 INFO L271 CegarLoopResult]: At program point L43(lines 13 45) the Hoare annotation is: true [2020-08-18 18:49:15,698 INFO L264 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= (+ (* 2 main_~ielen~0) main_~p~0) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= (+ main_~p~0 2) main_~bufsize_0~0)) [2020-08-18 18:49:15,698 INFO L264 CegarLoopResult]: At program point L39-1(line 39) the Hoare annotation is: (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= (+ (* 2 main_~ielen~0) main_~p~0) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= (+ main_~p~0 2) main_~bufsize_0~0)) [2020-08-18 18:49:15,699 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-18 18:49:15,699 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-18 18:49:15,699 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-18 18:49:15,699 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-18 18:49:15,699 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-08-18 18:49:15,699 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-18 18:49:15,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 06:49:15 BoogieIcfgContainer [2020-08-18 18:49:15,719 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 18:49:15,722 INFO L168 Benchmark]: Toolchain (without parser) took 2151.60 ms. Allocated memory was 141.0 MB in the beginning and 233.3 MB in the end (delta: 92.3 MB). Free memory was 102.7 MB in the beginning and 190.1 MB in the end (delta: -87.4 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-08-18 18:49:15,724 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 18:49:15,725 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.30 ms. Allocated memory is still 141.0 MB. Free memory was 102.5 MB in the beginning and 92.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-18 18:49:15,726 INFO L168 Benchmark]: Boogie Preprocessor took 119.59 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 92.3 MB in the beginning and 181.0 MB in the end (delta: -88.7 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-08-18 18:49:15,727 INFO L168 Benchmark]: RCFGBuilder took 331.44 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 166.6 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-08-18 18:49:15,728 INFO L168 Benchmark]: TraceAbstraction took 1444.09 ms. Allocated memory was 202.9 MB in the beginning and 233.3 MB in the end (delta: 30.4 MB). Free memory was 166.0 MB in the beginning and 190.1 MB in the end (delta: -24.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 7.1 GB. [2020-08-18 18:49:15,733 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 250.30 ms. Allocated memory is still 141.0 MB. Free memory was 102.5 MB in the beginning and 92.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.59 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 92.3 MB in the beginning and 181.0 MB in the end (delta: -88.7 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 331.44 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 166.6 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1444.09 ms. Allocated memory was 202.9 MB in the beginning and 233.3 MB in the end (delta: 30.4 MB). Free memory was 166.0 MB in the beginning and 190.1 MB in the end (delta: -24.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (1 <= p && 1 <= leader_len) && 2 * ielen + p <= bufsize_0 + 2 * i - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 33 SDslu, 261 SDs, 0 SdLazy, 106 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=2, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 14 PreInvPairs, 23 NumberOfFragments, 70 HoareAnnotationTreeSize, 14 FomulaSimplifications, 92 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 5553 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 21/23 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...