/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -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+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:02:22,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:02:22,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:02:22,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:02:22,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:02:22,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:02:22,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:02:22,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:02:22,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:02:22,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:02:22,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:02:22,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:02:22,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:02:22,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:02:22,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:02:22,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:02:22,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:02:22,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:02:22,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:02:22,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:02:22,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:02:22,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:02:22,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:02:22,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:02:22,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 04:02:22,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:02:22,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:02:22,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:02:22,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:02:22,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:02:22,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:02:22,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:02:22,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:02:22,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:02:22,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:02:22,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:02:22,448 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 [2019-11-07 04:02:22,463 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:02:22,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:02:22,464 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:02:22,464 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:02:22,464 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:02:22,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:02:22,465 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:02:22,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:02:22,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:02:22,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:02:22,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:02:22,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:02:22,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:02:22,466 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:02:22,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:02:22,467 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:02:22,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:02:22,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:02:22,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:02:22,467 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:02:22,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:02:22,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:02:22,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:02:22,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:02:22,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:02:22,469 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:02:22,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:02:22,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:02:22,469 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 [2019-11-07 04:02:22,749 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:02:22,767 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:02:22,771 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:02:22,772 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:02:22,772 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:02:22,773 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/gauss_sum.i.p+cfa-reducer.c [2019-11-07 04:02:22,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64328c66d/a18cca184b09433894b7cad45d25f9b8/FLAG35cae9291 [2019-11-07 04:02:23,281 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:02:23,282 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum.i.p+cfa-reducer.c [2019-11-07 04:02:23,288 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64328c66d/a18cca184b09433894b7cad45d25f9b8/FLAG35cae9291 [2019-11-07 04:02:23,671 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64328c66d/a18cca184b09433894b7cad45d25f9b8 [2019-11-07 04:02:23,680 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:02:23,682 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:02:23,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:02:23,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:02:23,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:02:23,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:02:23" (1/1) ... [2019-11-07 04:02:23,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56a6c2c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:23, skipping insertion in model container [2019-11-07 04:02:23,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:02:23" (1/1) ... [2019-11-07 04:02:23,698 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:02:23,720 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:02:23,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:02:23,909 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:02:23,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:02:23,941 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:02:23,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:23 WrapperNode [2019-11-07 04:02:23,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:02:23,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:02:23,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:02:23,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:02:24,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:23" (1/1) ... [2019-11-07 04:02:24,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:23" (1/1) ... [2019-11-07 04:02:24,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:23" (1/1) ... [2019-11-07 04:02:24,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:23" (1/1) ... [2019-11-07 04:02:24,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:23" (1/1) ... [2019-11-07 04:02:24,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:23" (1/1) ... [2019-11-07 04:02:24,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:23" (1/1) ... [2019-11-07 04:02:24,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:02:24,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:02:24,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:02:24,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:02:24,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:23" (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 [2019-11-07 04:02:24,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:02:24,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:02:24,103 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:02:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:02:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 04:02:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 04:02:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:02:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:02:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:02:24,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:02:24,283 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:02:24,284 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-07 04:02:24,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:02:24 BoogieIcfgContainer [2019-11-07 04:02:24,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:02:24,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:02:24,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:02:24,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:02:24,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:02:23" (1/3) ... [2019-11-07 04:02:24,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59581bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:02:24, skipping insertion in model container [2019-11-07 04:02:24,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:23" (2/3) ... [2019-11-07 04:02:24,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59581bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:02:24, skipping insertion in model container [2019-11-07 04:02:24,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:02:24" (3/3) ... [2019-11-07 04:02:24,293 INFO L109 eAbstractionObserver]: Analyzing ICFG gauss_sum.i.p+cfa-reducer.c [2019-11-07 04:02:24,311 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:02:24,319 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:02:24,331 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:02:24,387 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:02:24,388 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:02:24,388 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:02:24,388 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:02:24,388 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:02:24,388 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:02:24,389 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:02:24,389 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:02:24,406 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-07 04:02:24,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 04:02:24,413 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:02:24,414 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:02:24,416 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:02:24,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:02:24,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1330646415, now seen corresponding path program 1 times [2019-11-07 04:02:24,431 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:02:24,431 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222219129] [2019-11-07 04:02:24,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:02:24,512 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 04:02:24,513 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34537740] [2019-11-07 04:02:24,513 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 [2019-11-07 04:02:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:02:24,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 04:02:24,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:02:24,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:02:24,618 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:02:24,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:02:24,653 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222219129] [2019-11-07 04:02:24,653 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 04:02:24,653 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34537740] [2019-11-07 04:02:24,654 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:02:24,654 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2019-11-07 04:02:24,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642584748] [2019-11-07 04:02:24,661 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:02:24,661 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:02:24,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:02:24,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:02:24,673 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 5 states. [2019-11-07 04:02:24,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:02:24,735 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2019-11-07 04:02:24,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:02:24,738 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-07 04:02:24,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:02:24,746 INFO L225 Difference]: With dead ends: 25 [2019-11-07 04:02:24,746 INFO L226 Difference]: Without dead ends: 12 [2019-11-07 04:02:24,749 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:02:24,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-07 04:02:24,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-07 04:02:24,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-07 04:02:24,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-07 04:02:24,787 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2019-11-07 04:02:24,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:02:24,788 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-07 04:02:24,788 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:02:24,788 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-07 04:02:24,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-07 04:02:24,789 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:02:24,789 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:02:24,992 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:02:24,993 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:02:24,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:02:24,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1699571622, now seen corresponding path program 1 times [2019-11-07 04:02:24,994 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:02:24,994 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047682409] [2019-11-07 04:02:24,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:02:25,008 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 04:02:25,009 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [831442752] [2019-11-07 04:02:25,009 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 [2019-11-07 04:02:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:02:25,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-07 04:02:25,043 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:02:25,086 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:02:25,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:02:25,108 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:02:25,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:02:25,320 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047682409] [2019-11-07 04:02:25,320 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 04:02:25,321 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831442752] [2019-11-07 04:02:25,322 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1315653923] [2019-11-07 04:02:25,349 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-11-07 04:02:25,349 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:02:25,360 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:02:25,366 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:02:25,367 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:02:25,441 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 10 for LOIs [2019-11-07 04:02:25,701 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2019-11-07 04:02:25,705 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:02:26,549 WARN L191 SmtUtils]: Spent 820.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2019-11-07 04:02:27,080 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2019-11-07 04:02:27,081 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-07 04:02:27,081 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8] total 18 [2019-11-07 04:02:27,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581522205] [2019-11-07 04:02:27,084 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-07 04:02:27,084 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:02:27,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-07 04:02:27,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2019-11-07 04:02:27,086 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 18 states. [2019-11-07 04:02:29,308 WARN L191 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2019-11-07 04:02:29,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:02:29,324 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2019-11-07 04:02:29,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-07 04:02:29,325 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 11 [2019-11-07 04:02:29,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:02:29,326 INFO L225 Difference]: With dead ends: 16 [2019-11-07 04:02:29,326 INFO L226 Difference]: Without dead ends: 13 [2019-11-07 04:02:29,329 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2019-11-07 04:02:29,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-07 04:02:29,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-07 04:02:29,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-07 04:02:29,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-07 04:02:29,342 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2019-11-07 04:02:29,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:02:29,342 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-07 04:02:29,342 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-07 04:02:29,343 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-07 04:02:29,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-07 04:02:29,343 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:02:29,344 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:02:29,553 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:02:29,553 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:02:29,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:02:29,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1147050257, now seen corresponding path program 2 times [2019-11-07 04:02:29,554 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:02:29,555 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173962124] [2019-11-07 04:02:29,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:02:29,578 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 04:02:29,579 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [133662014] [2019-11-07 04:02:29,579 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:02:29,644 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-07 04:02:29,645 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 04:02:29,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-07 04:02:29,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:02:29,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:02:29,730 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:02:29,957 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 [2019-11-07 04:02:29,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2019-11-07 04:02:29,982 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173962124] [2019-11-07 04:02:29,983 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 04:02:29,983 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133662014] [2019-11-07 04:02:29,983 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2016903303] [2019-11-07 04:02:29,985 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-11-07 04:02:29,985 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:02:29,985 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:02:29,988 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:02:29,988 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:02:30,036 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 12 for LOIs [2019-11-07 04:02:30,132 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2019-11-07 04:02:30,140 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:02:31,037 WARN L191 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2019-11-07 04:02:31,382 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-07 04:02:31,382 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8] total 18 [2019-11-07 04:02:31,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708652077] [2019-11-07 04:02:31,383 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-07 04:02:31,383 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:02:31,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-07 04:02:31,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=4, NotChecked=30, Total=306 [2019-11-07 04:02:31,384 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 18 states. [2019-11-07 04:02:33,715 WARN L191 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2019-11-07 04:02:33,893 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2019-11-07 04:02:36,510 WARN L191 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2019-11-07 04:02:36,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:02:36,511 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2019-11-07 04:02:36,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-07 04:02:36,511 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 12 [2019-11-07 04:02:36,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:02:36,512 INFO L225 Difference]: With dead ends: 15 [2019-11-07 04:02:36,512 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 04:02:36,513 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=174, Invalid=475, Unknown=5, NotChecked=48, Total=702 [2019-11-07 04:02:36,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 04:02:36,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 04:02:36,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 04:02:36,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 04:02:36,514 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-11-07 04:02:36,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:02:36,514 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 04:02:36,514 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-07 04:02:36,514 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 04:02:36,514 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 04:02:36,717 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:02:36,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 04:02:39,990 WARN L191 SmtUtils]: Spent 3.23 s on a formula simplification. DAG size of input: 65 DAG size of output: 34 [2019-11-07 04:02:39,998 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__return_80~0)| ~__return_80~0)) [2019-11-07 04:02:39,998 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 04:02:39,998 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 04:02:39,999 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (= ~__return_main~0 0) (= 0 ~__return_80~0)) [2019-11-07 04:02:39,999 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 04:02:39,999 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 04:02:39,999 INFO L439 ceAbstractionStarter]: At program point L33(lines 25 54) the Hoare annotation is: (or (not (= 0 ~__return_main~0)) (not (= |old(~__return_80~0)| 0)) (and (<= 1 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)) (<= 0 ~__return_80~0) (forall ((main_~main__n~0 Int)) (or (= (* main_~main__n~0 (+ main_~main__n~0 1)) (+ (* 2 main_~main__sum~0) (* 2 main_~main__i~0))) (< main_~main__i~0 main_~main__n~0) (< main_~main__n~0 main_~main__i~0))) (<= main_~main__n~0 1000) (<= ~__return_80~0 0) (<= 1 main_~main__n~0))) [2019-11-07 04:02:39,999 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 8 56) the Hoare annotation is: (or (not (= 0 ~__return_main~0)) (not (= |old(~__return_80~0)| 0)) (= |old(~__return_80~0)| ~__return_80~0)) [2019-11-07 04:02:39,999 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 8 56) no Hoare annotation was computed. [2019-11-07 04:02:40,000 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2019-11-07 04:02:40,000 INFO L443 ceAbstractionStarter]: For program point L20(lines 20 54) no Hoare annotation was computed. [2019-11-07 04:02:40,000 INFO L443 ceAbstractionStarter]: For program point L14(lines 14 55) no Hoare annotation was computed. [2019-11-07 04:02:40,000 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 8 56) no Hoare annotation was computed. [2019-11-07 04:02:40,000 INFO L443 ceAbstractionStarter]: For program point L44(line 44) no Hoare annotation was computed. [2019-11-07 04:02:40,000 INFO L443 ceAbstractionStarter]: For program point L42(lines 42 51) no Hoare annotation was computed. [2019-11-07 04:02:40,007 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-11-07 04:02:40,008 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-11-07 04:02:40,008 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-11-07 04:02:40,009 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-11-07 04:02:40,015 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-11-07 04:02:40,016 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-11-07 04:02:40,016 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-11-07 04:02:40,016 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-11-07 04:02:40,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:02:40 BoogieIcfgContainer [2019-11-07 04:02:40,022 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 04:02:40,024 INFO L168 Benchmark]: Toolchain (without parser) took 16341.76 ms. Allocated memory was 134.7 MB in the beginning and 254.8 MB in the end (delta: 120.1 MB). Free memory was 99.9 MB in the beginning and 183.2 MB in the end (delta: -83.4 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. [2019-11-07 04:02:40,025 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 134.7 MB. Free memory was 118.0 MB in the beginning and 117.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-11-07 04:02:40,026 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.23 ms. Allocated memory is still 134.7 MB. Free memory was 99.5 MB in the beginning and 90.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-11-07 04:02:40,027 INFO L168 Benchmark]: Boogie Preprocessor took 105.93 ms. Allocated memory was 134.7 MB in the beginning and 197.7 MB in the end (delta: 62.9 MB). Free memory was 90.1 MB in the beginning and 176.2 MB in the end (delta: -86.1 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2019-11-07 04:02:40,027 INFO L168 Benchmark]: RCFGBuilder took 236.21 ms. Allocated memory is still 197.7 MB. Free memory was 176.2 MB in the beginning and 164.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2019-11-07 04:02:40,028 INFO L168 Benchmark]: TraceAbstraction took 15735.83 ms. Allocated memory was 197.7 MB in the beginning and 254.8 MB in the end (delta: 57.1 MB). Free memory was 163.5 MB in the beginning and 183.2 MB in the end (delta: -19.7 MB). Peak memory consumption was 37.5 MB. Max. memory is 7.1 GB. [2019-11-07 04:02:40,033 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 134.7 MB. Free memory was 118.0 MB in the beginning and 117.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 259.23 ms. Allocated memory is still 134.7 MB. Free memory was 99.5 MB in the beginning and 90.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.93 ms. Allocated memory was 134.7 MB in the beginning and 197.7 MB in the end (delta: 62.9 MB). Free memory was 90.1 MB in the beginning and 176.2 MB in the end (delta: -86.1 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 236.21 ms. Allocated memory is still 197.7 MB. Free memory was 176.2 MB in the beginning and 164.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15735.83 ms. Allocated memory was 197.7 MB in the beginning and 254.8 MB in the end (delta: 57.1 MB). Free memory was 163.5 MB in the beginning and 183.2 MB in the end (delta: -19.7 MB). Peak memory consumption was 37.5 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: 44]: 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: 25]: Loop Invariant [2019-11-07 04:02:40,042 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-11-07 04:02:40,043 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-11-07 04:02:40,043 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-11-07 04:02:40,043 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-11-07 04:02:40,044 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-11-07 04:02:40,044 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-11-07 04:02:40,044 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-11-07 04:02:40,044 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_80) == 0)) || ((((((1 <= main__i && (main__n * (main__n + 1) == 2 * main__sum || main__i <= main__n)) && 0 <= __return_80) && (forall main_~main__n~0 : int :: (main_~main__n~0 * (main_~main__n~0 + 1) == 2 * main__sum + 2 * main__i || main__i < main_~main__n~0) || main_~main__n~0 < main__i)) && main__n <= 1000) && __return_80 <= 0) && 1 <= main__n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 15 locations, 1 error locations. Result: SAFE, OverallTime: 15.6s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.2s, HoareTripleCheckerStatistics: 26 SDtfs, 79 SDslu, 66 SDs, 0 SdLazy, 120 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 9.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 8 NumberOfFragments, 86 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 218 FormulaSimplificationTreeSizeReductionInter, 3.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 60 ConstructedInterpolants, 2 QuantifiedInterpolants, 2299 SizeOfPredicates, 14 NumberOfNonLiveVariables, 132 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 513, ICFG_INTERPRETER_ENTERED_PROCEDURES: 6, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 20, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 22, TOOLS_POST_TIME[ms]: 27, TOOLS_POST_CALL_APPLICATIONS: 8, TOOLS_POST_CALL_TIME[ms]: 12, TOOLS_POST_RETURN_APPLICATIONS: 4, TOOLS_POST_RETURN_TIME[ms]: 6, TOOLS_QUANTIFIERELIM_APPLICATIONS: 34, TOOLS_QUANTIFIERELIM_TIME[ms]: 25, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 6, FLUID_QUERY_TIME[ms]: 5, FLUID_QUERIES: 76, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 4, DOMAIN_JOIN_TIME[ms]: 57, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME[ms]: 262, DOMAIN_ISSUBSETEQ_APPLICATIONS: 6, DOMAIN_ISSUBSETEQ_TIME[ms]: 22, DOMAIN_ISBOTTOM_APPLICATIONS: 20, DOMAIN_ISBOTTOM_TIME[ms]: 36, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 308, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 307, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 6, CALL_SUMMARIZER_APPLICATIONS: 4, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME[ms]: 4, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 4, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 4, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 24, DAG_COMPRESSION_PROCESSED_NODES: 126, DAG_COMPRESSION_RETAINED_NODES: 76, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...