/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/nla-digbench/sqrt1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:05:14,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:05:14,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:05:14,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:05:14,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:05:14,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:05:14,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:05:14,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:05:14,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:05:14,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:05:14,276 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:05:14,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:05:14,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:05:14,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:05:14,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:05:14,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:05:14,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:05:14,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:05:14,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:05:14,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:05:14,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:05:14,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:05:14,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:05:14,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:05:14,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:05:14,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:05:14,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:05:14,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:05:14,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:05:14,294 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:05:14,294 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:05:14,295 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:05:14,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:05:14,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:05:14,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:05:14,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:05:14,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:05:14,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:05:14,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:05:14,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:05:14,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:05:14,301 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 04:05:14,315 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:05:14,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:05:14,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:05:14,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:05:14,317 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:05:14,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:05:14,318 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:05:14,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:05:14,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:05:14,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:05:14,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:05:14,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:05:14,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:05:14,319 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:05:14,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:05:14,319 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:05:14,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:05:14,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:05:14,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:05:14,320 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:05:14,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:05:14,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:05:14,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:05:14,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:05:14,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:05:14,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:05:14,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:05:14,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:05:14,322 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 04:05:14,584 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:05:14,606 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:05:14,611 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:05:14,612 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:05:14,613 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:05:14,613 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/sqrt1.c [2019-11-07 04:05:14,683 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86c066e5c/9791386594c04d9abac733cf2d6caa96/FLAG6f016dc0b [2019-11-07 04:05:15,124 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:05:15,125 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/sqrt1.c [2019-11-07 04:05:15,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86c066e5c/9791386594c04d9abac733cf2d6caa96/FLAG6f016dc0b [2019-11-07 04:05:15,559 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86c066e5c/9791386594c04d9abac733cf2d6caa96 [2019-11-07 04:05:15,585 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:05:15,590 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:05:15,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:05:15,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:05:15,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:05:15,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:05:15" (1/1) ... [2019-11-07 04:05:15,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fb60bcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:15, skipping insertion in model container [2019-11-07 04:05:15,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:05:15" (1/1) ... [2019-11-07 04:05:15,634 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:05:15,680 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:05:15,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:05:15,967 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:05:15,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:05:15,996 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:05:15,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:15 WrapperNode [2019-11-07 04:05:15,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:05:15,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:05:15,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:05:15,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:05:16,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:15" (1/1) ... [2019-11-07 04:05:16,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:15" (1/1) ... [2019-11-07 04:05:16,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:15" (1/1) ... [2019-11-07 04:05:16,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:15" (1/1) ... [2019-11-07 04:05:16,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:15" (1/1) ... [2019-11-07 04:05:16,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:15" (1/1) ... [2019-11-07 04:05:16,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:15" (1/1) ... [2019-11-07 04:05:16,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:05:16,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:05:16,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:05:16,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:05:16,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:15" (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 04:05:16,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:05:16,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:05:16,155 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 04:05:16,156 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:05:16,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:05:16,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:05:16,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 04:05:16,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 04:05:16,156 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:05:16,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:05:16,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:05:16,370 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:05:16,371 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 04:05:16,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:05:16 BoogieIcfgContainer [2019-11-07 04:05:16,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:05:16,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:05:16,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:05:16,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:05:16,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:05:15" (1/3) ... [2019-11-07 04:05:16,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@253615c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:05:16, skipping insertion in model container [2019-11-07 04:05:16,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:15" (2/3) ... [2019-11-07 04:05:16,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@253615c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:05:16, skipping insertion in model container [2019-11-07 04:05:16,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:05:16" (3/3) ... [2019-11-07 04:05:16,387 INFO L109 eAbstractionObserver]: Analyzing ICFG sqrt1.c [2019-11-07 04:05:16,398 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:05:16,404 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:05:16,414 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:05:16,438 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:05:16,438 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:05:16,438 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:05:16,439 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:05:16,439 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:05:16,439 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:05:16,439 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:05:16,439 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:05:16,456 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-07 04:05:16,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 04:05:16,462 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:05:16,463 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:05:16,465 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:05:16,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:05:16,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1402897764, now seen corresponding path program 1 times [2019-11-07 04:05:16,477 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:05:16,478 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699749215] [2019-11-07 04:05:16,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:05:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:05:16,569 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 04:05:16,570 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699749215] [2019-11-07 04:05:16,571 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:05:16,571 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:05:16,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634090985] [2019-11-07 04:05:16,578 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:05:16,579 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:05:16,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:05:16,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:05:16,591 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2019-11-07 04:05:16,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:05:16,616 INFO L93 Difference]: Finished difference Result 41 states and 61 transitions. [2019-11-07 04:05:16,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:05:16,618 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-07 04:05:16,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:05:16,627 INFO L225 Difference]: With dead ends: 41 [2019-11-07 04:05:16,627 INFO L226 Difference]: Without dead ends: 19 [2019-11-07 04:05:16,631 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:05:16,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-07 04:05:16,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-11-07 04:05:16,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-07 04:05:16,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2019-11-07 04:05:16,675 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 10 [2019-11-07 04:05:16,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:05:16,675 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2019-11-07 04:05:16,675 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:05:16,676 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2019-11-07 04:05:16,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 04:05:16,676 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:05:16,676 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:05:16,677 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:05:16,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:05:16,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1444634955, now seen corresponding path program 1 times [2019-11-07 04:05:16,678 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:05:16,678 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347159555] [2019-11-07 04:05:16,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:05:16,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:05:16,934 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2019-11-07 04:05:16,958 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 04:05:16,958 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347159555] [2019-11-07 04:05:16,959 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:05:16,959 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:05:16,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469820638] [2019-11-07 04:05:16,961 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:05:16,961 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:05:16,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:05:16,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:05:16,962 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 5 states. [2019-11-07 04:05:17,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:05:17,080 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2019-11-07 04:05:17,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:05:17,081 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-07 04:05:17,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:05:17,082 INFO L225 Difference]: With dead ends: 25 [2019-11-07 04:05:17,083 INFO L226 Difference]: Without dead ends: 23 [2019-11-07 04:05:17,085 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:05:17,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-07 04:05:17,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-07 04:05:17,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-07 04:05:17,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-11-07 04:05:17,104 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 10 [2019-11-07 04:05:17,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:05:17,105 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-11-07 04:05:17,105 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:05:17,105 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-11-07 04:05:17,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-07 04:05:17,106 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:05:17,106 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:05:17,107 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:05:17,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:05:17,107 INFO L82 PathProgramCache]: Analyzing trace with hash -892290774, now seen corresponding path program 1 times [2019-11-07 04:05:17,108 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:05:17,108 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465240711] [2019-11-07 04:05:17,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:05:17,131 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 04:05:17,131 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1246594011] [2019-11-07 04:05:17,132 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 04:05:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:05:17,173 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-07 04:05:17,179 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:05:17,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:05:17,286 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:05:17,363 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:05:17,392 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:05:17,396 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:05:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:05:17,438 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465240711] [2019-11-07 04:05:17,439 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 04:05:17,439 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246594011] [2019-11-07 04:05:17,439 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1285487466] [2019-11-07 04:05:17,472 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-11-07 04:05:17,473 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:05:17,480 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:05:17,487 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:05:17,488 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:05:17,549 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-11-07 04:05:17,675 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-11-07 04:05:17,680 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-11-07 04:05:17,688 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:05:17,832 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:05:17,832 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 7] total 14 [2019-11-07 04:05:17,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359573301] [2019-11-07 04:05:17,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:05:17,834 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:05:17,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:05:17,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2019-11-07 04:05:17,835 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 5 states. [2019-11-07 04:05:17,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:05:17,943 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2019-11-07 04:05:17,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:05:17,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-11-07 04:05:17,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:05:17,945 INFO L225 Difference]: With dead ends: 41 [2019-11-07 04:05:17,946 INFO L226 Difference]: Without dead ends: 36 [2019-11-07 04:05:17,946 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2019-11-07 04:05:17,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-07 04:05:17,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-11-07 04:05:17,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-07 04:05:17,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2019-11-07 04:05:17,964 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 15 [2019-11-07 04:05:17,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:05:17,964 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2019-11-07 04:05:17,964 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:05:17,964 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2019-11-07 04:05:17,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-07 04:05:17,966 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:05:17,966 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:05:18,176 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:05:18,176 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:05:18,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:05:18,177 INFO L82 PathProgramCache]: Analyzing trace with hash -751011113, now seen corresponding path program 1 times [2019-11-07 04:05:18,177 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:05:18,177 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141289961] [2019-11-07 04:05:18,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:05:18,209 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 04:05:18,209 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1048780141] [2019-11-07 04:05:18,209 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 04:05:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:05:18,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-07 04:05:18,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:05:18,340 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 04:05:18,340 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:05:18,505 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 04:05:18,506 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141289961] [2019-11-07 04:05:18,506 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 04:05:18,506 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048780141] [2019-11-07 04:05:18,507 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1473626232] [2019-11-07 04:05:18,508 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-11-07 04:05:18,509 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:05:18,509 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:05:18,509 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:05:18,510 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:05:18,525 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-11-07 04:05:19,128 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2019-11-07 04:05:19,135 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-11-07 04:05:19,136 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:05:19,418 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-07 04:05:19,418 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2019-11-07 04:05:19,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162231181] [2019-11-07 04:05:19,419 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-07 04:05:19,420 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:05:19,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-07 04:05:19,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2019-11-07 04:05:19,421 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 20 states. [2019-11-07 04:05:19,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:05:19,742 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2019-11-07 04:05:19,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:05:19,744 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 32 [2019-11-07 04:05:19,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:05:19,745 INFO L225 Difference]: With dead ends: 44 [2019-11-07 04:05:19,745 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 04:05:19,746 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2019-11-07 04:05:19,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 04:05:19,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 04:05:19,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 04:05:19,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 04:05:19,749 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2019-11-07 04:05:19,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:05:19,750 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 04:05:19,750 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-07 04:05:19,750 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 04:05:19,750 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 04:05:19,954 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:05:19,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 04:05:20,276 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-07 04:05:20,276 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 04:05:20,277 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 04:05:20,277 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 04:05:20,277 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 04:05:20,277 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 04:05:20,277 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 15 42) the Hoare annotation is: true [2019-11-07 04:05:20,277 INFO L443 ceAbstractionStarter]: For program point L26(lines 23 35) no Hoare annotation was computed. [2019-11-07 04:05:20,278 INFO L439 ceAbstractionStarter]: At program point L25(line 25) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~a~0) 1))) (and (<= main_~n~0 2147483647) (= (let ((.cse0 (+ main_~a~0 1))) (* .cse0 .cse0)) main_~s~0) (<= 0 (+ main_~n~0 2147483648)) (<= 0 main_~a~0) (<= .cse1 main_~t~0) (<= main_~t~0 .cse1))) [2019-11-07 04:05:20,278 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 15 42) no Hoare annotation was computed. [2019-11-07 04:05:20,278 INFO L439 ceAbstractionStarter]: At program point L24(line 24) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~a~0) 1))) (and (<= main_~n~0 2147483647) (= (let ((.cse0 (+ main_~a~0 1))) (* .cse0 .cse0)) main_~s~0) (<= 0 (+ main_~n~0 2147483648)) (<= 0 main_~a~0) (<= .cse1 main_~t~0) (<= main_~t~0 .cse1))) [2019-11-07 04:05:20,278 INFO L439 ceAbstractionStarter]: At program point L24-1(line 24) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~a~0) 1))) (and (<= main_~n~0 2147483647) (= (let ((.cse0 (+ main_~a~0 1))) (* .cse0 .cse0)) main_~s~0) (<= 0 (+ main_~n~0 2147483648)) (<= 0 main_~a~0) (<= .cse1 main_~t~0) (<= main_~t~0 .cse1))) [2019-11-07 04:05:20,279 INFO L439 ceAbstractionStarter]: At program point L23-2(lines 23 35) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~a~0) 1))) (and (<= main_~n~0 2147483647) (= (let ((.cse0 (+ main_~a~0 1))) (* .cse0 .cse0)) main_~s~0) (<= 0 (+ main_~n~0 2147483648)) (<= 0 main_~a~0) (<= .cse1 main_~t~0) (<= main_~t~0 .cse1))) [2019-11-07 04:05:20,279 INFO L439 ceAbstractionStarter]: At program point L23-3(lines 23 35) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~a~0) 1))) (and (<= main_~n~0 2147483647) (= (let ((.cse0 (+ main_~a~0 1))) (* .cse0 .cse0)) main_~s~0) (<= 0 (+ main_~n~0 2147483648)) (<= 0 main_~a~0) (<= .cse1 main_~t~0) (<= main_~t~0 .cse1))) [2019-11-07 04:05:20,279 INFO L443 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2019-11-07 04:05:20,279 INFO L439 ceAbstractionStarter]: At program point L38(line 38) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~a~0) 1))) (and (<= main_~n~0 2147483647) (= (let ((.cse0 (+ main_~a~0 1))) (* .cse0 .cse0)) main_~s~0) (<= 0 (+ main_~n~0 2147483648)) (<= 0 main_~a~0) (<= .cse1 main_~t~0) (<= main_~t~0 .cse1))) [2019-11-07 04:05:20,280 INFO L439 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~a~0) 1))) (and (<= main_~n~0 2147483647) (= (let ((.cse0 (+ main_~a~0 1))) (* .cse0 .cse0)) main_~s~0) (<= 0 (+ main_~n~0 2147483648)) (<= 0 main_~a~0) (<= .cse1 main_~t~0) (<= main_~t~0 .cse1))) [2019-11-07 04:05:20,280 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-11-07 04:05:20,280 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 6 12) the Hoare annotation is: true [2019-11-07 04:05:20,280 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 6 12) no Hoare annotation was computed. [2019-11-07 04:05:20,280 INFO L443 ceAbstractionStarter]: For program point L8(lines 8 9) no Hoare annotation was computed. [2019-11-07 04:05:20,280 INFO L443 ceAbstractionStarter]: For program point L7(lines 7 10) no Hoare annotation was computed. [2019-11-07 04:05:20,280 INFO L443 ceAbstractionStarter]: For program point L7-2(lines 6 12) no Hoare annotation was computed. [2019-11-07 04:05:20,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:05:20 BoogieIcfgContainer [2019-11-07 04:05:20,308 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 04:05:20,314 INFO L168 Benchmark]: Toolchain (without parser) took 4720.37 ms. Allocated memory was 145.2 MB in the beginning and 246.4 MB in the end (delta: 101.2 MB). Free memory was 103.3 MB in the beginning and 94.2 MB in the end (delta: 9.1 MB). Peak memory consumption was 110.3 MB. Max. memory is 7.1 GB. [2019-11-07 04:05:20,315 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 04:05:20,316 INFO L168 Benchmark]: CACSL2BoogieTranslator took 401.79 ms. Allocated memory is still 145.2 MB. Free memory was 103.1 MB in the beginning and 93.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-11-07 04:05:20,317 INFO L168 Benchmark]: Boogie Preprocessor took 103.46 ms. Allocated memory was 145.2 MB in the beginning and 200.8 MB in the end (delta: 55.6 MB). Free memory was 93.1 MB in the beginning and 179.5 MB in the end (delta: -86.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-11-07 04:05:20,318 INFO L168 Benchmark]: RCFGBuilder took 272.27 ms. Allocated memory is still 200.8 MB. Free memory was 179.5 MB in the beginning and 166.7 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2019-11-07 04:05:20,319 INFO L168 Benchmark]: TraceAbstraction took 3934.01 ms. Allocated memory was 200.8 MB in the beginning and 246.4 MB in the end (delta: 45.6 MB). Free memory was 166.7 MB in the beginning and 94.2 MB in the end (delta: 72.5 MB). Peak memory consumption was 118.1 MB. Max. memory is 7.1 GB. [2019-11-07 04:05:20,323 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 401.79 ms. Allocated memory is still 145.2 MB. Free memory was 103.1 MB in the beginning and 93.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.46 ms. Allocated memory was 145.2 MB in the beginning and 200.8 MB in the end (delta: 55.6 MB). Free memory was 93.1 MB in the beginning and 179.5 MB in the end (delta: -86.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 272.27 ms. Allocated memory is still 200.8 MB. Free memory was 179.5 MB in the beginning and 166.7 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3934.01 ms. Allocated memory was 200.8 MB in the beginning and 246.4 MB in the end (delta: 45.6 MB). Free memory was 166.7 MB in the beginning and 94.2 MB in the end (delta: 72.5 MB). Peak memory consumption was 118.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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: 23]: Loop Invariant Derived loop invariant: ((((n <= 2147483647 && (a + 1) * (a + 1) == s) && 0 <= n + 2147483648) && 0 <= a) && 2 * a + 1 <= t) && t <= 2 * a + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. Result: SAFE, OverallTime: 3.8s, OverallIterations: 4, TraceHistogramMax: 5, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, HoareTripleCheckerStatistics: 84 SDtfs, 36 SDslu, 204 SDs, 0 SdLazy, 244 SolverSat, 81 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 106 SyntacticMatches, 7 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=3, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 35 PreInvPairs, 56 NumberOfFragments, 250 HoareAnnotationTreeSize, 35 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 596 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 10061 SizeOfPredicates, 8 NumberOfNonLiveVariables, 113 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 48/74 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 845, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 43, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 29, TOOLS_POST_TIME[ms]: 20, TOOLS_POST_CALL_APPLICATIONS: 39, TOOLS_POST_CALL_TIME[ms]: 142, TOOLS_POST_RETURN_APPLICATIONS: 30, TOOLS_POST_RETURN_TIME[ms]: 55, TOOLS_QUANTIFIERELIM_APPLICATIONS: 98, TOOLS_QUANTIFIERELIM_TIME[ms]: 182, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 10, FLUID_QUERY_TIME[ms]: 6, FLUID_QUERIES: 119, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 33, DOMAIN_JOIN_TIME[ms]: 393, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 53, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 6, DOMAIN_ISBOTTOM_APPLICATIONS: 43, DOMAIN_ISBOTTOM_TIME[ms]: 72, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 489, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 488, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 30, CALL_SUMMARIZER_CACHE_MISSES: 4, CALL_SUMMARIZER_OVERALL_TIME[ms]: 16, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 15, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 5, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 30, DAG_COMPRESSION_PROCESSED_NODES: 194, DAG_COMPRESSION_RETAINED_NODES: 111, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...