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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/loop-new/gauss_sum.i.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 22:59:27,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:59:27,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:59:27,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:59:27,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:59:27,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:59:27,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:59:27,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:59:27,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:59:27,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:59:27,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:59:27,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:59:27,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:59:27,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:59:27,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:59:27,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:59:27,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:59:27,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:59:27,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:59:27,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:59:27,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:59:27,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:59:27,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:59:27,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:59:28,003 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 22:59:28,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:59:28,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:59:28,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:59:28,013 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 [2019-10-13 22:59:28,036 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:59:28,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:59:28,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:59:28,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:59:28,041 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:59:28,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:59:28,041 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:59:28,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:59:28,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:59:28,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:59:28,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:59:28,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:59:28,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:59:28,042 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:59:28,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:59:28,043 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:59:28,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:59:28,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:59:28,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:59:28,045 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:59:28,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:59:28,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:59:28,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:59:28,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:59:28,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:59:28,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:59:28,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:59:28,047 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:59:28,047 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 22:59:28,396 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:59:28,412 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:59:28,415 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:59:28,417 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:59:28,418 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:59:28,418 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/gauss_sum.i.p+lhb-reducer.c [2019-10-13 22:59:28,487 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea4f57a75/6f85d53ab623467e9ec3a06a175990d9/FLAGbe6623c2b [2019-10-13 22:59:28,905 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:59:28,906 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum.i.p+lhb-reducer.c [2019-10-13 22:59:28,912 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea4f57a75/6f85d53ab623467e9ec3a06a175990d9/FLAGbe6623c2b [2019-10-13 22:59:29,276 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea4f57a75/6f85d53ab623467e9ec3a06a175990d9 [2019-10-13 22:59:29,284 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:59:29,286 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:59:29,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:59:29,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:59:29,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:59:29,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:59:29" (1/1) ... [2019-10-13 22:59:29,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3030c171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:29, skipping insertion in model container [2019-10-13 22:59:29,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:59:29" (1/1) ... [2019-10-13 22:59:29,303 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:59:29,329 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:59:29,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:59:29,524 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:59:29,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:59:29,569 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:59:29,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:29 WrapperNode [2019-10-13 22:59:29,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:59:29,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:59:29,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:59:29,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:59:29,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:29" (1/1) ... [2019-10-13 22:59:29,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:29" (1/1) ... [2019-10-13 22:59:29,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:29" (1/1) ... [2019-10-13 22:59:29,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:29" (1/1) ... [2019-10-13 22:59:29,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:29" (1/1) ... [2019-10-13 22:59:29,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:29" (1/1) ... [2019-10-13 22:59:29,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:29" (1/1) ... [2019-10-13 22:59:29,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:59:29,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:59:29,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:59:29,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:59:29,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:29" (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 [2019-10-13 22:59:29,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:59:29,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:59:29,733 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:59:29,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:59:29,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 22:59:29,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 22:59:29,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 22:59:29,733 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:59:29,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:59:29,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:59:29,961 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:59:29,961 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 22:59:29,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:59:29 BoogieIcfgContainer [2019-10-13 22:59:29,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:59:29,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:59:29,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:59:29,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:59:29,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:59:29" (1/3) ... [2019-10-13 22:59:29,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c5e3cfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:59:29, skipping insertion in model container [2019-10-13 22:59:29,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:59:29" (2/3) ... [2019-10-13 22:59:29,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c5e3cfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:59:29, skipping insertion in model container [2019-10-13 22:59:29,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:59:29" (3/3) ... [2019-10-13 22:59:29,972 INFO L109 eAbstractionObserver]: Analyzing ICFG gauss_sum.i.p+lhb-reducer.c [2019-10-13 22:59:29,990 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:59:30,012 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:59:30,024 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:59:30,057 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:59:30,057 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:59:30,057 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:59:30,060 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:59:30,060 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:59:30,060 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:59:30,061 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:59:30,061 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:59:30,085 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-10-13 22:59:30,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-13 22:59:30,090 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:59:30,091 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:59:30,093 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:59:30,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:59:30,097 INFO L82 PathProgramCache]: Analyzing trace with hash 709025904, now seen corresponding path program 1 times [2019-10-13 22:59:30,104 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:59:30,104 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963133750] [2019-10-13 22:59:30,104 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:59:30,104 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:59:30,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:59:30,192 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 22:59:30,192 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [642128590] [2019-10-13 22:59:30,192 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 [2019-10-13 22:59:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:59:30,244 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 31 conjunts are in the unsatisfiable core [2019-10-13 22:59:30,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:59:30,421 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:59:30,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:59:30,453 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:59:30,873 WARN L860 $PredicateComparison]: unable to prove that (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 1))) (or (= (* main_~main__n~0 (+ main_~main__n~0 1)) (+ (* 2 c_main_~main__sum~0) (* 4 c_main_~main__i~0) 2)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) is different from true [2019-10-13 22:59:30,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:59:30,953 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963133750] [2019-10-13 22:59:30,956 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 22:59:30,956 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642128590] [2019-10-13 22:59:30,957 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:59:30,958 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2019-10-13 22:59:30,958 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950702777] [2019-10-13 22:59:30,963 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-13 22:59:30,964 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:59:30,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-13 22:59:30,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=104, Unknown=2, NotChecked=20, Total=156 [2019-10-13 22:59:30,982 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 13 states. [2019-10-13 22:59:31,550 WARN L860 $PredicateComparison]: unable to prove that (and (or (= (* c_main_~main__n~0 (+ c_main_~main__n~0 1)) (* 2 c_main_~main__sum~0)) (<= c_main_~main__i~0 c_main_~main__n~0)) (forall ((main_~main__n~0 Int)) (or (= (* main_~main__n~0 (+ main_~main__n~0 1)) (+ (* 2 c_main_~main__sum~0) (* 2 c_main_~main__i~0))) (< c_main_~main__i~0 main_~main__n~0) (< main_~main__n~0 c_main_~main__i~0)))) is different from true [2019-10-13 22:59:31,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:59:31,725 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2019-10-13 22:59:31,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 22:59:31,727 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2019-10-13 22:59:31,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:59:31,736 INFO L225 Difference]: With dead ends: 44 [2019-10-13 22:59:31,736 INFO L226 Difference]: Without dead ends: 18 [2019-10-13 22:59:31,740 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=72, Invalid=275, Unknown=3, NotChecked=70, Total=420 [2019-10-13 22:59:31,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-13 22:59:31,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-10-13 22:59:31,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-13 22:59:31,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-10-13 22:59:31,773 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2019-10-13 22:59:31,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:59:31,773 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-10-13 22:59:31,773 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-13 22:59:31,774 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-10-13 22:59:31,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-13 22:59:31,774 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:59:31,774 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:59:31,978 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:59:31,978 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:59:31,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:59:31,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1527904976, now seen corresponding path program 1 times [2019-10-13 22:59:31,979 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:59:31,979 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013628909] [2019-10-13 22:59:31,980 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:59:31,980 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:59:31,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:59:31,999 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 22:59:31,999 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [523695044] [2019-10-13 22:59:31,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-10-13 22:59:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:59:32,031 WARN L254 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 39 conjunts are in the unsatisfiable core [2019-10-13 22:59:32,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:59:32,138 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:59:32,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:59:32,155 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:59:32,380 WARN L860 $PredicateComparison]: unable to prove that (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 1))) (or (= (* main_~main__n~0 (+ main_~main__n~0 1)) (+ (* 2 c_main_~main__sum~0) (* 4 c_main_~main__i~0) 2)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) is different from true [2019-10-13 22:59:32,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2019-10-13 22:59:32,881 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013628909] [2019-10-13 22:59:32,881 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 22:59:32,882 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523695044] [2019-10-13 22:59:32,882 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2115874854] [2019-10-13 22:59:32,905 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-13 22:59:32,906 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 22:59:32,912 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 22:59:32,920 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 22:59:32,920 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 22:59:33,029 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 12 for LOIs [2019-10-13 22:59:33,478 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2019-10-13 22:59:33,483 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 22:59:33,484 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 22:59:33,484 INFO L193 IcfgInterpreter]: Reachable states at location L44 satisfy 68#(and (<= 0 |old(~__return_96~0)|) (<= |old(~__return_96~0)| 0) (<= main_~main__sum~0 10) (<= 4 main_~main__n~0) (<= 10 main_~main__sum~0) (= main_~main__sum~0 10) (<= ~__return_96~0 0) (<= 0 ~__return_main~0) (<= 0 ~__return_96~0) (<= ~__return_main~0 0) (<= 3 main_~main__n~0) (<= 2 main_~main__n~0) (<= 5 main_~main__i~0) (<= main_~main__n~0 1000) (<= main_~main__n~0 2147483647) (= 5 main_~main__i~0) (<= 0 (+ main_~main__n~0 2147483648)) (<= 1 main_~main__n~0) (= |old(~__return_96~0)| 0) (= |old(~__return_96~0)| ~__return_96~0) (= ~__return_main~0 0) (<= main_~main__i~0 5)) [2019-10-13 22:59:33,484 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 125#(and (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__return_96~0)| ~__return_96~0)) [2019-10-13 22:59:33,485 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 121#(and (<= 0 |old(~__return_96~0)|) (<= |old(~__return_96~0)| 0) (<= 15 main_~main__sum~0) (<= ~__return_96~0 0) (<= 6 main_~main__i~0) (<= 0 ~__return_main~0) (<= main_~__VERIFIER_assert__cond~0 0) (= main_~__VERIFIER_assert__cond~0 0) (= main_~__tmp_1~0 main_~__VERIFIER_assert__cond~0) (<= 0 ~__return_96~0) (<= ~__return_main~0 0) (not (<= main_~main__i~0 main_~main__n~0)) (= (ite (= (* main_~main__n~0 (+ main_~main__n~0 1)) (* main_~main__sum~0 2)) 1 0) main_~__tmp_1~0) (<= main_~main__n~0 1000) (<= 0 main_~__VERIFIER_assert__cond~0) (= |old(~__return_96~0)| 0) (<= main_~__tmp_1~0 0) (= ~__return_main~0 0) (<= 0 main_~__tmp_1~0) (<= 5 main_~main__n~0)) [2019-10-13 22:59:33,485 INFO L193 IcfgInterpreter]: Reachable states at location L14 satisfy 38#(and (<= 0 |old(~__return_96~0)|) (<= |old(~__return_96~0)| 0) (<= main_~main__n~0 2147483647) (<= ~__return_96~0 0) (<= 0 (+ main_~main__n~0 2147483648)) (<= 0 ~__return_main~0) (= |old(~__return_96~0)| 0) (= |old(~__return_96~0)| ~__return_96~0) (= ~__return_main~0 0) (<= 0 ~__return_96~0) (<= ~__return_main~0 0)) [2019-10-13 22:59:33,485 INFO L193 IcfgInterpreter]: Reachable states at location L36 satisfy 58#(and (<= main_~main__i~0 3) (<= 0 |old(~__return_96~0)|) (<= |old(~__return_96~0)| 0) (<= ~__return_96~0 0) (<= 0 ~__return_main~0) (= 3 main_~main__i~0) (<= 0 ~__return_96~0) (<= ~__return_main~0 0) (<= 2 main_~main__n~0) (= main_~main__sum~0 3) (<= main_~main__sum~0 3) (<= main_~main__n~0 1000) (<= 3 main_~main__sum~0) (<= main_~main__n~0 2147483647) (<= 0 (+ main_~main__n~0 2147483648)) (<= 1 main_~main__n~0) (= |old(~__return_96~0)| 0) (= |old(~__return_96~0)| ~__return_96~0) (= ~__return_main~0 0) (<= 3 main_~main__i~0)) [2019-10-13 22:59:33,486 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 ~__return_96~0) (<= ~__return_96~0 0) (<= 0 ~__return_main~0) (= ~__return_main~0 0) (<= 0 ~__return_96~0) (<= ~__return_main~0 0)) [2019-10-13 22:59:33,486 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (<= 0 |old(~__return_96~0)|) (<= |old(~__return_96~0)| 0) (<= ~__return_96~0 0) (<= 0 ~__return_main~0) (= |old(~__return_96~0)| 0) (= |old(~__return_96~0)| ~__return_96~0) (= ~__return_main~0 0) (<= 0 ~__return_96~0) (<= ~__return_main~0 0)) [2019-10-13 22:59:33,486 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 130#(and (= 0 ~__return_96~0) (<= ~__return_96~0 0) (<= 0 ~__return_main~0) (= ~__return_main~0 0) (<= 0 ~__return_96~0) (<= ~__return_main~0 0)) [2019-10-13 22:59:33,486 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 22:59:33,487 INFO L193 IcfgInterpreter]: Reachable states at location L28 satisfy 48#(and (= 1 main_~main__i~0) (<= main_~main__i~0 1) (<= 0 |old(~__return_96~0)|) (<= |old(~__return_96~0)| 0) (<= 0 main_~main__sum~0) (= main_~main__sum~0 0) (<= 1 main_~main__i~0) (<= ~__return_96~0 0) (<= 0 ~__return_main~0) (<= main_~main__sum~0 0) (<= 0 ~__return_96~0) (<= ~__return_main~0 0) (<= main_~main__n~0 1000) (<= main_~main__n~0 2147483647) (<= 0 (+ main_~main__n~0 2147483648)) (<= 1 main_~main__n~0) (= |old(~__return_96~0)| 0) (= |old(~__return_96~0)| ~__return_96~0) (= ~__return_main~0 0)) [2019-10-13 22:59:33,487 INFO L193 IcfgInterpreter]: Reachable states at location L40 satisfy 63#(and (<= main_~main__sum~0 6) (<= 0 |old(~__return_96~0)|) (<= |old(~__return_96~0)| 0) (<= 4 main_~main__i~0) (<= ~__return_96~0 0) (<= 0 ~__return_main~0) (<= 0 ~__return_96~0) (<= ~__return_main~0 0) (<= 3 main_~main__n~0) (<= main_~main__i~0 4) (<= 2 main_~main__n~0) (= main_~main__sum~0 6) (<= main_~main__sum~0 (+ main_~main__n~0 3)) (<= main_~main__n~0 1000) (= main_~main__sum~0 (+ main_~main__i~0 2)) (<= main_~main__n~0 2147483647) (<= 6 main_~main__sum~0) (<= 0 (+ main_~main__n~0 2147483648)) (<= 1 main_~main__n~0) (= |old(~__return_96~0)| 0) (= |old(~__return_96~0)| ~__return_96~0) (= ~__return_main~0 0)) [2019-10-13 22:59:33,487 INFO L193 IcfgInterpreter]: Reachable states at location L62 satisfy 111#(and (<= 0 |old(~__return_96~0)|) (<= |old(~__return_96~0)| 0) (<= 15 main_~main__sum~0) (<= ~__return_96~0 0) (<= 6 main_~main__i~0) (<= 0 ~__return_main~0) (= main_~__tmp_1~0 main_~__VERIFIER_assert__cond~0) (<= 0 ~__return_96~0) (<= ~__return_main~0 0) (not (<= main_~main__i~0 main_~main__n~0)) (= (ite (= (* main_~main__n~0 (+ main_~main__n~0 1)) (* main_~main__sum~0 2)) 1 0) main_~__tmp_1~0) (<= main_~main__n~0 1000) (<= main_~__VERIFIER_assert__cond~0 1) (<= main_~__tmp_1~0 1) (<= 0 main_~__VERIFIER_assert__cond~0) (= |old(~__return_96~0)| 0) (= ~__return_main~0 0) (<= 0 main_~__tmp_1~0) (<= 5 main_~main__n~0)) [2019-10-13 22:59:33,488 INFO L193 IcfgInterpreter]: Reachable states at location L20 satisfy 43#(and (<= 0 |old(~__return_96~0)|) (<= |old(~__return_96~0)| 0) (<= main_~main__n~0 2147483647) (<= ~__return_96~0 0) (<= 0 (+ main_~main__n~0 2147483648)) (<= 0 ~__return_main~0) (<= 1 main_~main__n~0) (= |old(~__return_96~0)| 0) (= |old(~__return_96~0)| ~__return_96~0) (= ~__return_main~0 0) (<= 0 ~__return_96~0) (<= ~__return_main~0 0)) [2019-10-13 22:59:33,488 INFO L193 IcfgInterpreter]: Reachable states at location L53 satisfy 106#(and (<= 0 |old(~__return_96~0)|) (<= |old(~__return_96~0)| 0) (<= main_~main__n~0 1000) (<= 15 main_~main__sum~0) (<= ~__return_96~0 0) (<= 6 main_~main__i~0) (<= 0 ~__return_main~0) (= |old(~__return_96~0)| 0) (= ~__return_main~0 0) (<= 0 ~__return_96~0) (<= ~__return_main~0 0) (<= 5 main_~main__n~0)) [2019-10-13 22:59:33,488 INFO L193 IcfgInterpreter]: Reachable states at location L32 satisfy 53#(and (<= 0 |old(~__return_96~0)|) (<= |old(~__return_96~0)| 0) (<= main_~main__i~0 2) (= 2 main_~main__i~0) (<= main_~main__sum~0 1) (<= ~__return_96~0 0) (<= 0 ~__return_main~0) (<= 0 ~__return_96~0) (<= ~__return_main~0 0) (<= 2 main_~main__i~0) (<= main_~main__n~0 1000) (<= main_~main__n~0 2147483647) (= (+ main_~main__sum~0 1) main_~main__i~0) (<= 0 (+ main_~main__n~0 2147483648)) (<= 1 main_~main__n~0) (= |old(~__return_96~0)| 0) (<= main_~main__i~0 (+ main_~main__n~0 1)) (= |old(~__return_96~0)| ~__return_96~0) (= ~__return_main~0 0) (<= 1 main_~main__sum~0)) [2019-10-13 22:59:33,489 INFO L193 IcfgInterpreter]: Reachable states at location L64 satisfy 116#(and (<= 0 |old(~__return_96~0)|) (<= |old(~__return_96~0)| 0) (<= 15 main_~main__sum~0) (<= ~__return_96~0 0) (<= 6 main_~main__i~0) (<= 0 ~__return_main~0) (<= main_~__VERIFIER_assert__cond~0 0) (= main_~__VERIFIER_assert__cond~0 0) (= main_~__tmp_1~0 main_~__VERIFIER_assert__cond~0) (<= 0 ~__return_96~0) (<= ~__return_main~0 0) (not (<= main_~main__i~0 main_~main__n~0)) (= (ite (= (* main_~main__n~0 (+ main_~main__n~0 1)) (* main_~main__sum~0 2)) 1 0) main_~__tmp_1~0) (<= main_~main__n~0 1000) (<= 0 main_~__VERIFIER_assert__cond~0) (= |old(~__return_96~0)| 0) (<= main_~__tmp_1~0 0) (= ~__return_main~0 0) (<= 0 main_~__tmp_1~0) (<= 5 main_~main__n~0)) [2019-10-13 22:59:33,727 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 31 [2019-10-13 22:59:34,522 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-13 22:59:34,523 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 13] total 29 [2019-10-13 22:59:34,523 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061799862] [2019-10-13 22:59:34,526 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-10-13 22:59:34,526 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:59:34,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-10-13 22:59:34,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=621, Unknown=7, NotChecked=52, Total=812 [2019-10-13 22:59:34,528 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 29 states. [2019-10-13 22:59:35,296 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 34 [2019-10-13 22:59:38,866 WARN L191 SmtUtils]: Spent 3.44 s on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2019-10-13 22:59:43,116 WARN L191 SmtUtils]: Spent 4.19 s on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2019-10-13 22:59:49,482 WARN L191 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2019-10-13 22:59:49,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:59:49,483 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2019-10-13 22:59:49,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-13 22:59:49,484 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 17 [2019-10-13 22:59:49,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:59:49,484 INFO L225 Difference]: With dead ends: 20 [2019-10-13 22:59:49,485 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 22:59:49,487 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=329, Invalid=1386, Unknown=11, NotChecked=80, Total=1806 [2019-10-13 22:59:49,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 22:59:49,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 22:59:49,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 22:59:49,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 22:59:49,488 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-10-13 22:59:49,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:59:49,488 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 22:59:49,489 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-10-13 22:59:49,489 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 22:59:49,489 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 22:59:49,693 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:59:49,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 22:59:55,063 WARN L191 SmtUtils]: Spent 5.30 s on a formula simplification. DAG size of input: 68 DAG size of output: 36 [2019-10-13 22:59:55,066 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__return_96~0)| ~__return_96~0)) [2019-10-13 22:59:55,066 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 22:59:55,066 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 22:59:55,067 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~__return_96~0 0) (= ~__return_main~0 0) (<= 0 ~__return_96~0)) [2019-10-13 22:59:55,067 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 22:59:55,067 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 22:59:55,067 INFO L443 ceAbstractionStarter]: For program point L64(line 64) no Hoare annotation was computed. [2019-10-13 22:59:55,067 INFO L443 ceAbstractionStarter]: For program point L62(lines 62 71) no Hoare annotation was computed. [2019-10-13 22:59:55,068 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 64) no Hoare annotation was computed. [2019-10-13 22:59:55,068 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 8 101) no Hoare annotation was computed. [2019-10-13 22:59:55,068 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 8 101) no Hoare annotation was computed. [2019-10-13 22:59:55,068 INFO L443 ceAbstractionStarter]: For program point L44(lines 44 78) no Hoare annotation was computed. [2019-10-13 22:59:55,068 INFO L443 ceAbstractionStarter]: For program point L40(lines 40 83) no Hoare annotation was computed. [2019-10-13 22:59:55,068 INFO L443 ceAbstractionStarter]: For program point L36(lines 36 88) no Hoare annotation was computed. [2019-10-13 22:59:55,069 INFO L443 ceAbstractionStarter]: For program point L32(lines 32 93) no Hoare annotation was computed. [2019-10-13 22:59:55,069 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 8 101) the Hoare annotation is: (or (not (= 0 ~__return_main~0)) (not (= |old(~__return_96~0)| 0)) (= |old(~__return_96~0)| ~__return_96~0)) [2019-10-13 22:59:55,069 INFO L443 ceAbstractionStarter]: For program point L28(lines 28 98) no Hoare annotation was computed. [2019-10-13 22:59:55,073 INFO L439 ceAbstractionStarter]: At program point L53(lines 45 74) the Hoare annotation is: (or (not (= 0 ~__return_main~0)) (not (= |old(~__return_96~0)| 0)) (and (<= main_~main__n~0 1000) (<= 6 main_~main__i~0) (or (= (* main_~main__n~0 (+ main_~main__n~0 1)) (* 2 main_~main__sum~0)) (<= main_~main__i~0 main_~main__n~0)) (= |old(~__return_96~0)| ~__return_96~0) (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ main_~main__i~0 2))) (or (< main_~main__n~0 .cse0) (= (* main_~main__n~0 (+ main_~main__n~0 1)) (+ (* 2 main_~main__sum~0) (* 6 main_~main__i~0) 6)) (< .cse0 main_~main__n~0)))) (<= 5 main_~main__n~0))) [2019-10-13 22:59:55,073 INFO L443 ceAbstractionStarter]: For program point L20(lines 20 99) no Hoare annotation was computed. [2019-10-13 22:59:55,074 INFO L443 ceAbstractionStarter]: For program point L14(lines 14 100) no Hoare annotation was computed. [2019-10-13 22:59:55,080 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-13 22:59:55,081 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-13 22:59:55,081 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-13 22:59:55,082 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-13 22:59:55,088 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-13 22:59:55,089 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-13 22:59:55,089 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-13 22:59:55,089 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-13 22:59:55,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:59:55 BoogieIcfgContainer [2019-10-13 22:59:55,094 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 22:59:55,096 INFO L168 Benchmark]: Toolchain (without parser) took 25810.51 ms. Allocated memory was 140.0 MB in the beginning and 269.5 MB in the end (delta: 129.5 MB). Free memory was 104.0 MB in the beginning and 175.7 MB in the end (delta: -71.7 MB). Peak memory consumption was 57.8 MB. Max. memory is 7.1 GB. [2019-10-13 22:59:55,097 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-13 22:59:55,098 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.62 ms. Allocated memory is still 140.0 MB. Free memory was 103.8 MB in the beginning and 93.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-10-13 22:59:55,099 INFO L168 Benchmark]: Boogie Preprocessor took 103.64 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 93.9 MB in the beginning and 181.0 MB in the end (delta: -87.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2019-10-13 22:59:55,100 INFO L168 Benchmark]: RCFGBuilder took 288.65 ms. Allocated memory is still 201.9 MB. Free memory was 180.3 MB in the beginning and 167.0 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2019-10-13 22:59:55,101 INFO L168 Benchmark]: TraceAbstraction took 25130.31 ms. Allocated memory was 201.9 MB in the beginning and 269.5 MB in the end (delta: 67.6 MB). Free memory was 167.0 MB in the beginning and 175.7 MB in the end (delta: -8.6 MB). Peak memory consumption was 59.0 MB. Max. memory is 7.1 GB. [2019-10-13 22:59:55,105 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 283.62 ms. Allocated memory is still 140.0 MB. Free memory was 103.8 MB in the beginning and 93.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.64 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 93.9 MB in the beginning and 181.0 MB in the end (delta: -87.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 288.65 ms. Allocated memory is still 201.9 MB. Free memory was 180.3 MB in the beginning and 167.0 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25130.31 ms. Allocated memory was 201.9 MB in the beginning and 269.5 MB in the end (delta: 67.6 MB). Free memory was 167.0 MB in the beginning and 175.7 MB in the end (delta: -8.6 MB). Peak memory consumption was 59.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 64]: 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: 45]: Loop Invariant [2019-10-13 22:59:55,115 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-13 22:59:55,115 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-13 22:59:55,115 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-13 22:59:55,116 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-13 22:59:55,116 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-13 22:59:55,117 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-13 22:59:55,117 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-13 22:59:55,117 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] Derived loop invariant: (!(0 == __return_main) || !(\old(__return_96) == 0)) || (((((main__n <= 1000 && 6 <= main__i) && (main__n * (main__n + 1) == 2 * main__sum || main__i <= main__n)) && \old(__return_96) == __return_96) && (forall main_~main__n~0 : int :: (main_~main__n~0 < main__i + 2 || main_~main__n~0 * (main_~main__n~0 + 1) == 2 * main__sum + 6 * main__i + 6) || main__i + 2 < main_~main__n~0)) && 5 <= main__n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 1 error locations. Result: SAFE, OverallTime: 25.0s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 15.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.3s, HoareTripleCheckerStatistics: 31 SDtfs, 67 SDslu, 177 SDs, 0 SdLazy, 314 SolverSat, 78 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 36 SyntacticMatches, 6 SemanticMatches, 60 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 17.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 8 NumberOfFragments, 91 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 203 FormulaSimplificationTreeSizeReductionInter, 5.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 60 ConstructedInterpolants, 12 QuantifiedInterpolants, 6968 SizeOfPredicates, 12 NumberOfNonLiveVariables, 138 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 583, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 25, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 16, TOOLS_POST_TIME[ms]: 28, TOOLS_POST_CALL_APPLICATIONS: 4, TOOLS_POST_CALL_TIME[ms]: 3, TOOLS_POST_RETURN_APPLICATIONS: 2, TOOLS_POST_RETURN_TIME[ms]: 1, TOOLS_QUANTIFIERELIM_APPLICATIONS: 22, TOOLS_QUANTIFIERELIM_TIME[ms]: 20, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 9, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 28, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 23, DOMAIN_JOIN_TIME[ms]: 389, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 90, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 8, DOMAIN_ISBOTTOM_APPLICATIONS: 1, DOMAIN_ISBOTTOM_TIME[ms]: 1, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 207, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 206, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 2, CALL_SUMMARIZER_CACHE_MISSES: 1, CALL_SUMMARIZER_OVERALL_TIME[ms]: 16, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 16, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 4, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 11, DAG_COMPRESSION_PROCESSED_NODES: 112, DAG_COMPRESSION_RETAINED_NODES: 46, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...