/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/loops/string-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:27:04,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:27:04,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:27:04,927 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:27:04,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:27:04,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:27:04,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:27:04,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:27:04,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:27:04,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:27:04,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:27:04,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:27:04,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:27:04,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:27:04,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:27:04,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:27:04,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:27:04,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:27:04,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:27:04,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:27:04,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:27:04,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:27:04,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:27:04,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:27:04,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:27:04,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:27:04,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:27:04,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:27:04,960 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 04:27:04,975 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:27:04,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:27:04,976 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:27:04,976 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:27:04,976 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:27:04,977 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:27:04,977 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:27:04,977 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:27:04,977 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:27:04,977 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:27:04,977 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:27:04,978 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:27:04,978 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:27:04,978 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:27:04,978 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:27:04,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:27:04,979 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:27:04,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:27:04,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:27:04,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:27:04,980 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:27:04,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:27:04,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:27:04,980 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:27:04,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:27:04,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:27:04,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:27:04,981 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:27:04,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:27:04,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:27:04,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:27:04,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:27:04,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:27:04,982 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:27:04,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:27:04,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:27:04,983 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:27:04,983 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:27:05,279 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:27:05,301 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:27:05,305 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:27:05,306 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:27:05,306 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:27:05,307 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/string-2.i [2019-11-24 04:27:05,375 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1077db99e/f67fac8990d74dc7a282deadda256b11/FLAGb5d2d64e5 [2019-11-24 04:27:05,861 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:27:05,861 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/string-2.i [2019-11-24 04:27:05,869 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1077db99e/f67fac8990d74dc7a282deadda256b11/FLAGb5d2d64e5 [2019-11-24 04:27:06,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1077db99e/f67fac8990d74dc7a282deadda256b11 [2019-11-24 04:27:06,250 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:27:06,251 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:27:06,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:27:06,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:27:06,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:27:06,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:27:06" (1/1) ... [2019-11-24 04:27:06,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d5d6786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:06, skipping insertion in model container [2019-11-24 04:27:06,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:27:06" (1/1) ... [2019-11-24 04:27:06,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:27:06,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:27:06,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:27:06,481 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:27:06,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:27:06,600 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:27:06,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:06 WrapperNode [2019-11-24 04:27:06,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:27:06,601 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:27:06,602 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:27:06,602 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:27:06,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:06" (1/1) ... [2019-11-24 04:27:06,616 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:06" (1/1) ... [2019-11-24 04:27:06,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:27:06,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:27:06,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:27:06,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:27:06,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:06" (1/1) ... [2019-11-24 04:27:06,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:06" (1/1) ... [2019-11-24 04:27:06,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:06" (1/1) ... [2019-11-24 04:27:06,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:06" (1/1) ... [2019-11-24 04:27:06,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:06" (1/1) ... [2019-11-24 04:27:06,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:06" (1/1) ... [2019-11-24 04:27:06,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:06" (1/1) ... [2019-11-24 04:27:06,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:27:06,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:27:06,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:27:06,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:27:06,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:06" (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 [2019-11-24 04:27:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 04:27:06,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:27:06,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:27:06,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 04:27:06,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:27:06,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 04:27:07,157 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:27:07,157 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-24 04:27:07,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:27:07 BoogieIcfgContainer [2019-11-24 04:27:07,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:27:07,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:27:07,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:27:07,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:27:07,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:27:06" (1/3) ... [2019-11-24 04:27:07,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412ece18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:27:07, skipping insertion in model container [2019-11-24 04:27:07,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:06" (2/3) ... [2019-11-24 04:27:07,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412ece18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:27:07, skipping insertion in model container [2019-11-24 04:27:07,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:27:07" (3/3) ... [2019-11-24 04:27:07,166 INFO L109 eAbstractionObserver]: Analyzing ICFG string-2.i [2019-11-24 04:27:07,174 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:27:07,181 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 04:27:07,190 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 04:27:07,212 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:27:07,212 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:27:07,212 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:27:07,212 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:27:07,212 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:27:07,212 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:27:07,213 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:27:07,213 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:27:07,229 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-24 04:27:07,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-24 04:27:07,235 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:27:07,236 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:27:07,236 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:27:07,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:27:07,242 INFO L82 PathProgramCache]: Analyzing trace with hash -689545715, now seen corresponding path program 1 times [2019-11-24 04:27:07,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:27:07,249 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962511082] [2019-11-24 04:27:07,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:27:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:27:07,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:27:07,394 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962511082] [2019-11-24 04:27:07,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:27:07,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:27:07,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085152120] [2019-11-24 04:27:07,403 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:27:07,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:27:07,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:27:07,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:27:07,425 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2019-11-24 04:27:07,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:27:07,487 INFO L93 Difference]: Finished difference Result 43 states and 65 transitions. [2019-11-24 04:27:07,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:27:07,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-11-24 04:27:07,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:27:07,501 INFO L225 Difference]: With dead ends: 43 [2019-11-24 04:27:07,501 INFO L226 Difference]: Without dead ends: 21 [2019-11-24 04:27:07,505 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:27:07,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-24 04:27:07,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2019-11-24 04:27:07,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-24 04:27:07,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-11-24 04:27:07,546 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 12 [2019-11-24 04:27:07,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:27:07,546 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-11-24 04:27:07,546 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:27:07,547 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-11-24 04:27:07,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-24 04:27:07,548 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:27:07,548 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:27:07,548 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:27:07,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:27:07,549 INFO L82 PathProgramCache]: Analyzing trace with hash 932466697, now seen corresponding path program 1 times [2019-11-24 04:27:07,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:27:07,550 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958972114] [2019-11-24 04:27:07,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:27:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:27:07,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 04:27:07,622 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958972114] [2019-11-24 04:27:07,622 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227104842] [2019-11-24 04:27:07,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:27:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:27:07,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 04:27:07,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:27:07,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 04:27:07,723 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:27:07,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 04:27:07,748 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1088709186] [2019-11-24 04:27:07,773 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2019-11-24 04:27:07,773 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:27:07,780 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:27:07,787 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:27:07,788 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:27:10,372 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:27:11,807 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:27:11,817 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:27:12,000 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:27:12,402 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 04:27:12,525 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2019-11-24 04:27:12,759 WARN L192 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2019-11-24 04:27:12,902 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 36 [2019-11-24 04:27:13,106 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2019-11-24 04:27:13,244 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 36 [2019-11-24 04:27:13,533 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 42 [2019-11-24 04:27:13,806 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2019-11-24 04:27:13,992 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2019-11-24 04:27:14,161 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2019-11-24 04:27:14,460 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-11-24 04:27:14,462 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 04:27:14,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-24 04:27:14,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2019-11-24 04:27:14,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917844792] [2019-11-24 04:27:14,465 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-24 04:27:14,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:27:14,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-24 04:27:14,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2019-11-24 04:27:14,467 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 7 states. [2019-11-24 04:27:14,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:27:14,533 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2019-11-24 04:27:14,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 04:27:14,534 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2019-11-24 04:27:14,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:27:14,535 INFO L225 Difference]: With dead ends: 41 [2019-11-24 04:27:14,535 INFO L226 Difference]: Without dead ends: 27 [2019-11-24 04:27:14,538 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2019-11-24 04:27:14,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-24 04:27:14,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2019-11-24 04:27:14,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-24 04:27:14,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-11-24 04:27:14,547 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2019-11-24 04:27:14,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:27:14,547 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-11-24 04:27:14,547 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-24 04:27:14,547 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-11-24 04:27:14,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-24 04:27:14,548 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:27:14,549 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:27:14,749 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:27:14,750 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:27:14,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:27:14,751 INFO L82 PathProgramCache]: Analyzing trace with hash -647224541, now seen corresponding path program 2 times [2019-11-24 04:27:14,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:27:14,751 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847423534] [2019-11-24 04:27:14,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:27:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:27:14,842 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-24 04:27:14,842 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847423534] [2019-11-24 04:27:14,842 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427596440] [2019-11-24 04:27:14,843 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:27:14,893 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-24 04:27:14,893 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-24 04:27:14,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-24 04:27:14,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:27:14,904 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-24 04:27:14,904 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:27:14,923 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-24 04:27:14,924 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1683460326] [2019-11-24 04:27:14,925 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2019-11-24 04:27:14,925 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:27:14,926 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:27:14,926 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:27:14,926 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:27:16,262 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:27:17,671 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 04:27:17,786 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2019-11-24 04:27:18,068 WARN L192 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-11-24 04:27:18,238 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 36 [2019-11-24 04:27:19,294 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-11-24 04:27:19,297 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 04:27:19,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-24 04:27:19,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2019-11-24 04:27:19,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203639530] [2019-11-24 04:27:19,298 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-24 04:27:19,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:27:19,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-24 04:27:19,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2019-11-24 04:27:19,299 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 8 states. [2019-11-24 04:27:19,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:27:19,352 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2019-11-24 04:27:19,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-24 04:27:19,353 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2019-11-24 04:27:19,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:27:19,354 INFO L225 Difference]: With dead ends: 46 [2019-11-24 04:27:19,354 INFO L226 Difference]: Without dead ends: 29 [2019-11-24 04:27:19,355 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2019-11-24 04:27:19,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-24 04:27:19,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2019-11-24 04:27:19,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-24 04:27:19,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-11-24 04:27:19,359 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 22 [2019-11-24 04:27:19,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:27:19,360 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-11-24 04:27:19,360 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-24 04:27:19,360 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-11-24 04:27:19,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-24 04:27:19,361 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:27:19,361 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:27:19,570 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:27:19,571 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:27:19,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:27:19,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1523302665, now seen corresponding path program 3 times [2019-11-24 04:27:19,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:27:19,572 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953007379] [2019-11-24 04:27:19,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:27:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-24 04:27:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-24 04:27:19,728 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-24 04:27:19,728 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-24 04:27:19,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 04:27:19 BoogieIcfgContainer [2019-11-24 04:27:19,777 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-24 04:27:19,778 INFO L168 Benchmark]: Toolchain (without parser) took 13527.86 ms. Allocated memory was 145.2 MB in the beginning and 394.8 MB in the end (delta: 249.6 MB). Free memory was 103.7 MB in the beginning and 119.7 MB in the end (delta: -16.0 MB). Peak memory consumption was 233.6 MB. Max. memory is 7.1 GB. [2019-11-24 04:27:19,779 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-11-24 04:27:19,779 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.81 ms. Allocated memory was 145.2 MB in the beginning and 201.3 MB in the end (delta: 56.1 MB). Free memory was 103.5 MB in the beginning and 180.4 MB in the end (delta: -76.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2019-11-24 04:27:19,780 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.67 ms. Allocated memory is still 201.3 MB. Free memory was 180.4 MB in the beginning and 178.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-11-24 04:27:19,780 INFO L168 Benchmark]: Boogie Preprocessor took 29.97 ms. Allocated memory is still 201.3 MB. Free memory was 178.0 MB in the beginning and 176.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-11-24 04:27:19,781 INFO L168 Benchmark]: RCFGBuilder took 485.21 ms. Allocated memory is still 201.3 MB. Free memory was 176.0 MB in the beginning and 151.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2019-11-24 04:27:19,781 INFO L168 Benchmark]: TraceAbstraction took 12617.51 ms. Allocated memory was 201.3 MB in the beginning and 394.8 MB in the end (delta: 193.5 MB). Free memory was 151.3 MB in the beginning and 119.7 MB in the end (delta: 31.6 MB). Peak memory consumption was 225.1 MB. Max. memory is 7.1 GB. [2019-11-24 04:27:19,783 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 348.81 ms. Allocated memory was 145.2 MB in the beginning and 201.3 MB in the end (delta: 56.1 MB). Free memory was 103.5 MB in the beginning and 180.4 MB in the end (delta: -76.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 41.67 ms. Allocated memory is still 201.3 MB. Free memory was 180.4 MB in the beginning and 178.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.97 ms. Allocated memory is still 201.3 MB. Free memory was 178.0 MB in the beginning and 176.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 485.21 ms. Allocated memory is still 201.3 MB. Free memory was 176.0 MB in the beginning and 151.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12617.51 ms. Allocated memory was 201.3 MB in the beginning and 394.8 MB in the end (delta: 193.5 MB). Free memory was 151.3 MB in the beginning and 119.7 MB in the end (delta: 31.6 MB). Peak memory consumption was 225.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftLeft at line 55. Possible FailurePath: [L17] char string_A[5], string_B[5]; [L18] int i, j, nc_A, nc_B, found=0; [L21] i=0 [L21] COND TRUE i<5 [L22] string_A[i]=__VERIFIER_nondet_char() [L21] i++ [L21] COND TRUE i<5 [L22] string_A[i]=__VERIFIER_nondet_char() [L21] i++ [L21] COND TRUE i<5 [L22] string_A[i]=__VERIFIER_nondet_char() [L21] i++ [L21] COND TRUE i<5 [L22] string_A[i]=__VERIFIER_nondet_char() [L21] i++ [L21] COND TRUE i<5 [L22] string_A[i]=__VERIFIER_nondet_char() [L21] i++ [L21] COND FALSE !(i<5) [L23] EXPR string_A[5 -1] [L23] COND FALSE !(!(string_A[5 -1]=='\0')) [L25] i=0 [L25] COND TRUE i<5 [L26] string_B[i]=__VERIFIER_nondet_char() [L25] i++ [L25] COND TRUE i<5 [L26] string_B[i]=__VERIFIER_nondet_char() [L25] i++ [L25] COND TRUE i<5 [L26] string_B[i]=__VERIFIER_nondet_char() [L25] i++ [L25] COND TRUE i<5 [L26] string_B[i]=__VERIFIER_nondet_char() [L25] i++ [L25] COND TRUE i<5 [L26] string_B[i]=__VERIFIER_nondet_char() [L25] i++ [L25] COND FALSE !(i<5) [L27] EXPR string_B[5 -1] [L27] COND FALSE !(!(string_B[5 -1]=='\0')) [L29] nc_A = 0 [L30] EXPR string_A[nc_A] [L30] COND FALSE !(string_A[nc_A]!='\0') [L33] nc_B = 0 [L34] EXPR string_B[nc_B] [L34] COND FALSE !(string_B[nc_B]!='\0') [L37] COND FALSE !(!(nc_B >= nc_A)) [L40] EXPR j=0 [L40] i=j=0 [L41] COND FALSE !((inc_B-1)<