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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 19:20:27,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 19:20:27,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 19:20:27,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 19:20:27,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 19:20:27,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 19:20:27,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 19:20:27,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 19:20:27,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 19:20:27,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 19:20:27,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 19:20:27,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 19:20:27,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 19:20:27,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 19:20:27,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 19:20:27,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 19:20:27,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 19:20:27,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 19:20:27,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 19:20:27,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 19:20:27,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 19:20:27,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 19:20:27,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 19:20:27,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 19:20:27,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 19:20:27,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 19:20:27,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 19:20:27,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 19:20:27,920 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-03 19:20:27,945 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 19:20:27,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 19:20:27,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-03 19:20:27,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-03 19:20:27,947 INFO L138 SettingsManager]: * Use SBE=true [2019-09-03 19:20:27,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 19:20:27,947 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 19:20:27,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-03 19:20:27,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 19:20:27,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 19:20:27,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 19:20:27,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 19:20:27,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 19:20:27,948 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 19:20:27,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 19:20:27,949 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-03 19:20:27,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 19:20:27,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 19:20:27,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 19:20:27,949 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-03 19:20:27,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-03 19:20:27,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 19:20:27,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 19:20:27,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 19:20:27,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-03 19:20:27,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-03 19:20:27,951 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 19:20:27,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 19:20:27,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-03 19:20:27,980 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 19:20:27,993 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 19:20:27,998 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 19:20:28,000 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 19:20:28,000 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 19:20:28,000 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-2.i [2019-09-03 19:20:28,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbea3b37c/772ab00c2ee04192b7b16978a2c6c3ce/FLAG41d3d7d5e [2019-09-03 19:20:28,516 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 19:20:28,517 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-2.i [2019-09-03 19:20:28,522 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbea3b37c/772ab00c2ee04192b7b16978a2c6c3ce/FLAG41d3d7d5e [2019-09-03 19:20:28,884 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbea3b37c/772ab00c2ee04192b7b16978a2c6c3ce [2019-09-03 19:20:28,894 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 19:20:28,896 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 19:20:28,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 19:20:28,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 19:20:28,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 19:20:28,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:20:28" (1/1) ... [2019-09-03 19:20:28,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3db0e7f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:28, skipping insertion in model container [2019-09-03 19:20:28,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:20:28" (1/1) ... [2019-09-03 19:20:28,912 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 19:20:28,931 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 19:20:29,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:20:29,100 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 19:20:29,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:20:29,133 INFO L192 MainTranslator]: Completed translation [2019-09-03 19:20:29,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:29 WrapperNode [2019-09-03 19:20:29,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 19:20:29,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 19:20:29,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 19:20:29,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 19:20:29,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:29" (1/1) ... [2019-09-03 19:20:29,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:29" (1/1) ... [2019-09-03 19:20:29,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:29" (1/1) ... [2019-09-03 19:20:29,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:29" (1/1) ... [2019-09-03 19:20:29,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:29" (1/1) ... [2019-09-03 19:20:29,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:29" (1/1) ... [2019-09-03 19:20:29,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:29" (1/1) ... [2019-09-03 19:20:29,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 19:20:29,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 19:20:29,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 19:20:29,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 19:20:29,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-09-03 19:20:29,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 19:20:29,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 19:20:29,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 19:20:29,312 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 19:20:29,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 19:20:29,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-03 19:20:29,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 19:20:29,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-03 19:20:29,313 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 19:20:29,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 19:20:29,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 19:20:29,497 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 19:20:29,499 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-03 19:20:29,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:20:29 BoogieIcfgContainer [2019-09-03 19:20:29,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 19:20:29,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 19:20:29,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 19:20:29,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 19:20:29,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 07:20:28" (1/3) ... [2019-09-03 19:20:29,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b15dbd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:20:29, skipping insertion in model container [2019-09-03 19:20:29,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:29" (2/3) ... [2019-09-03 19:20:29,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b15dbd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:20:29, skipping insertion in model container [2019-09-03 19:20:29,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:20:29" (3/3) ... [2019-09-03 19:20:29,524 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01-2.i [2019-09-03 19:20:29,555 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 19:20:29,576 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 19:20:29,618 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 19:20:29,653 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-03 19:20:29,654 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 19:20:29,654 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-03 19:20:29,654 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 19:20:29,655 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 19:20:29,655 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 19:20:29,655 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 19:20:29,655 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 19:20:29,655 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 19:20:29,671 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-09-03 19:20:29,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-03 19:20:29,675 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:20:29,676 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:20:29,678 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:20:29,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:20:29,683 INFO L82 PathProgramCache]: Analyzing trace with hash 579653156, now seen corresponding path program 1 times [2019-09-03 19:20:29,685 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:20:29,685 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:20:29,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:20:29,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:20:29,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:20:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:20:29,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:20:29,797 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:20:29,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-03 19:20:29,802 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 19:20:29,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 19:20:29,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 19:20:29,816 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-09-03 19:20:29,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:20:29,835 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2019-09-03 19:20:29,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 19:20:29,836 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-09-03 19:20:29,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:20:29,843 INFO L225 Difference]: With dead ends: 30 [2019-09-03 19:20:29,843 INFO L226 Difference]: Without dead ends: 13 [2019-09-03 19:20:29,847 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 19:20:29,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-09-03 19:20:29,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-09-03 19:20:29,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-09-03 19:20:29,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-09-03 19:20:29,878 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2019-09-03 19:20:29,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:20:29,878 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-09-03 19:20:29,878 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 19:20:29,879 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-09-03 19:20:29,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-03 19:20:29,879 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:20:29,880 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:20:29,880 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:20:29,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:20:29,881 INFO L82 PathProgramCache]: Analyzing trace with hash 574112030, now seen corresponding path program 1 times [2019-09-03 19:20:29,881 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:20:29,881 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:20:29,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:20:29,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:20:29,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:20:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:20:29,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:20:29,998 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:20:29,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-03 19:20:30,000 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 19:20:30,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 19:20:30,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-03 19:20:30,001 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2019-09-03 19:20:30,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:20:30,095 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-09-03 19:20:30,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-03 19:20:30,096 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-09-03 19:20:30,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:20:30,097 INFO L225 Difference]: With dead ends: 19 [2019-09-03 19:20:30,098 INFO L226 Difference]: Without dead ends: 14 [2019-09-03 19:20:30,099 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-03 19:20:30,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-09-03 19:20:30,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-09-03 19:20:30,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-09-03 19:20:30,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-09-03 19:20:30,107 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2019-09-03 19:20:30,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:20:30,109 INFO L475 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-09-03 19:20:30,109 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 19:20:30,109 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-09-03 19:20:30,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-03 19:20:30,110 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:20:30,111 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:20:30,112 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:20:30,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:20:30,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1164206820, now seen corresponding path program 1 times [2019-09-03 19:20:30,112 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:20:30,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:20:30,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:20:30,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:20:30,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:20:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:20:30,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:20:30,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 19:20:30,402 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-03 19:20:30,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 19:20:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:20:30,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-03 19:20:30,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 19:20:30,601 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 19:20:30,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:20:30,668 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 19:20:30,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2019-09-03 19:20:30,669 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-03 19:20:30,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-03 19:20:30,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2019-09-03 19:20:30,670 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 15 states. [2019-09-03 19:20:30,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:20:30,865 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2019-09-03 19:20:30,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-03 19:20:30,866 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2019-09-03 19:20:30,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:20:30,867 INFO L225 Difference]: With dead ends: 24 [2019-09-03 19:20:30,867 INFO L226 Difference]: Without dead ends: 18 [2019-09-03 19:20:30,869 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2019-09-03 19:20:30,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-09-03 19:20:30,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-09-03 19:20:30,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-03 19:20:30,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-09-03 19:20:30,874 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 13 [2019-09-03 19:20:30,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:20:30,875 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-09-03 19:20:30,875 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-03 19:20:30,875 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-09-03 19:20:30,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-03 19:20:30,876 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:20:30,876 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:20:30,877 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:20:30,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:20:30,877 INFO L82 PathProgramCache]: Analyzing trace with hash -2033115496, now seen corresponding path program 2 times [2019-09-03 19:20:30,877 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:20:30,877 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:20:30,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:20:30,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:20:30,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:20:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:20:31,163 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-03 19:20:31,163 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 19:20:31,163 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-03 19:20:31,177 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 19:20:31,190 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-03 19:20:31,191 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 19:20:31,192 WARN L254 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-03 19:20:31,193 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 19:20:31,414 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 19:20:31,477 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:20:31,481 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 19:20:31,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 20 [2019-09-03 19:20:31,482 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-03 19:20:31,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-03 19:20:31,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2019-09-03 19:20:31,484 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 20 states. [2019-09-03 19:20:31,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:20:31,906 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2019-09-03 19:20:31,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-03 19:20:31,907 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 17 [2019-09-03 19:20:31,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:20:31,907 INFO L225 Difference]: With dead ends: 21 [2019-09-03 19:20:31,907 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 19:20:31,908 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=122, Invalid=748, Unknown=0, NotChecked=0, Total=870 [2019-09-03 19:20:31,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 19:20:31,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 19:20:31,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 19:20:31,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 19:20:31,910 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-09-03 19:20:31,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:20:31,910 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 19:20:31,911 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-03 19:20:31,911 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 19:20:31,911 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 19:20:31,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-03 19:20:32,052 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-03 19:20:32,052 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-03 19:20:32,052 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-03 19:20:32,052 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-03 19:20:32,053 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-03 19:20:32,053 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-03 19:20:32,053 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2019-09-03 19:20:32,053 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 11 18) no Hoare annotation was computed. [2019-09-03 19:20:32,053 INFO L443 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2019-09-03 19:20:32,053 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 11 18) no Hoare annotation was computed. [2019-09-03 19:20:32,054 INFO L443 ceAbstractionStarter]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2019-09-03 19:20:32,054 INFO L439 ceAbstractionStarter]: At program point L14-3(lines 14 16) the Hoare annotation is: (or (and (= main_~i~0 1) (<= main_~sn~0 0) (<= 0 main_~sn~0)) (let ((.cse1 (* 2 main_~i~0)) (.cse0 (+ main_~sn~0 2))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (< main_~sn~0 (+ (* 2 main_~n~0) 1))))) [2019-09-03 19:20:32,054 INFO L439 ceAbstractionStarter]: At program point L14-4(lines 14 16) the Hoare annotation is: (or (= (* 2 main_~n~0) main_~sn~0) (= 0 main_~sn~0)) [2019-09-03 19:20:32,054 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2019-09-03 19:20:32,055 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-09-03 19:20:32,055 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2019-09-03 19:20:32,055 INFO L443 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-09-03 19:20:32,055 INFO L443 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-09-03 19:20:32,057 INFO L443 ceAbstractionStarter]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2019-09-03 19:20:32,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 07:20:32 BoogieIcfgContainer [2019-09-03 19:20:32,080 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 19:20:32,084 INFO L168 Benchmark]: Toolchain (without parser) took 3186.78 ms. Allocated memory was 137.9 MB in the beginning and 219.2 MB in the end (delta: 81.3 MB). Free memory was 85.8 MB in the beginning and 84.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 83.0 MB. Max. memory is 7.1 GB. [2019-09-03 19:20:32,087 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 137.9 MB. Free memory was 103.9 MB in the beginning and 103.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 19:20:32,088 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.09 ms. Allocated memory is still 137.9 MB. Free memory was 85.5 MB in the beginning and 76.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-09-03 19:20:32,090 INFO L168 Benchmark]: Boogie Preprocessor took 126.09 ms. Allocated memory was 137.9 MB in the beginning and 198.2 MB in the end (delta: 60.3 MB). Free memory was 76.2 MB in the beginning and 176.7 MB in the end (delta: -100.5 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2019-09-03 19:20:32,093 INFO L168 Benchmark]: RCFGBuilder took 239.97 ms. Allocated memory is still 198.2 MB. Free memory was 176.1 MB in the beginning and 164.5 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2019-09-03 19:20:32,094 INFO L168 Benchmark]: TraceAbstraction took 2575.11 ms. Allocated memory was 198.2 MB in the beginning and 219.2 MB in the end (delta: 21.0 MB). Free memory was 164.5 MB in the beginning and 84.1 MB in the end (delta: 80.5 MB). Peak memory consumption was 101.5 MB. Max. memory is 7.1 GB. [2019-09-03 19:20:32,104 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 137.9 MB. Free memory was 103.9 MB in the beginning and 103.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 238.09 ms. Allocated memory is still 137.9 MB. Free memory was 85.5 MB in the beginning and 76.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.09 ms. Allocated memory was 137.9 MB in the beginning and 198.2 MB in the end (delta: 60.3 MB). Free memory was 76.2 MB in the beginning and 176.7 MB in the end (delta: -100.5 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 239.97 ms. Allocated memory is still 198.2 MB. Free memory was 176.1 MB in the beginning and 164.5 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2575.11 ms. Allocated memory was 198.2 MB in the beginning and 219.2 MB in the end (delta: 21.0 MB). Free memory was 164.5 MB in the beginning and 84.1 MB in the end (delta: 80.5 MB). Peak memory consumption was 101.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((i == 1 && sn <= 0) && 0 <= sn) || ((sn + 2 <= 2 * i && 2 * i <= sn + 2) && sn < 2 * n + 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 2.4s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 45 SDtfs, 11 SDslu, 150 SDs, 0 SdLazy, 195 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 21 NumberOfFragments, 47 HoareAnnotationTreeSize, 12 FomulaSimplifications, 61 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 116 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 6312 SizeOfPredicates, 6 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 4/20 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...