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-f4eb214f-m [2019-10-13 23:01:00,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:01:00,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:01:00,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:01:00,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:01:00,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:01:00,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:01:00,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:01:00,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:01:00,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:01:00,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:01:00,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:01:00,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:01:00,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:01:00,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:01:00,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:01:00,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:01:00,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:01:00,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:01:00,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:01:00,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:01:00,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:01:00,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:01:00,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:01:00,203 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 23:01:00,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:01:00,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:01:00,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:01:00,212 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:01:00,232 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:01:00,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:01:00,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:01:00,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:01:00,235 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:01:00,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:01:00,235 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:01:00,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:01:00,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:01:00,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:01:00,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:01:00,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:01:00,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:01:00,237 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:01:00,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:01:00,238 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:01:00,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:01:00,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:01:00,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:01:00,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:01:00,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:01:00,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:01:00,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:01:00,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:01:00,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:01:00,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:01:00,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:01:00,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:01:00,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:01:00,509 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:01:00,529 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:01:00,532 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:01:00,533 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:01:00,534 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:01:00,534 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/sqrt1.c [2019-10-13 23:01:00,602 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7994cbd94/3a017cffcbe846848db661cdc8a19e3f/FLAG33cfed862 [2019-10-13 23:01:01,042 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:01:01,043 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/sqrt1.c [2019-10-13 23:01:01,050 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7994cbd94/3a017cffcbe846848db661cdc8a19e3f/FLAG33cfed862 [2019-10-13 23:01:01,481 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7994cbd94/3a017cffcbe846848db661cdc8a19e3f [2019-10-13 23:01:01,491 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:01:01,493 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:01:01,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:01:01,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:01:01,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:01:01,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:01:01" (1/1) ... [2019-10-13 23:01:01,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e9b8ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:01, skipping insertion in model container [2019-10-13 23:01:01,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:01:01" (1/1) ... [2019-10-13 23:01:01,508 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:01:01,524 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:01:01,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:01:01,694 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:01:01,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:01:01,724 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:01:01,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:01 WrapperNode [2019-10-13 23:01:01,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:01:01,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:01:01,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:01:01,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:01:01,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:01" (1/1) ... [2019-10-13 23:01:01,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:01" (1/1) ... [2019-10-13 23:01:01,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:01" (1/1) ... [2019-10-13 23:01:01,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:01" (1/1) ... [2019-10-13 23:01:01,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:01" (1/1) ... [2019-10-13 23:01:01,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:01" (1/1) ... [2019-10-13 23:01:01,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:01" (1/1) ... [2019-10-13 23:01:01,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:01:01,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:01:01,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:01:01,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:01:01,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:01:01,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:01:01,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:01:01,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 23:01:01,886 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:01:01,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:01:01,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:01:01,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 23:01:01,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 23:01:01,887 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:01:01,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:01:01,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:01:02,056 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:01:02,056 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 23:01:02,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:01:02 BoogieIcfgContainer [2019-10-13 23:01:02,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:01:02,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:01:02,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:01:02,061 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:01:02,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:01:01" (1/3) ... [2019-10-13 23:01:02,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d593f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:01:02, skipping insertion in model container [2019-10-13 23:01:02,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:01" (2/3) ... [2019-10-13 23:01:02,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d593f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:01:02, skipping insertion in model container [2019-10-13 23:01:02,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:01:02" (3/3) ... [2019-10-13 23:01:02,065 INFO L109 eAbstractionObserver]: Analyzing ICFG sqrt1.c [2019-10-13 23:01:02,074 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:01:02,081 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:01:02,091 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:01:02,115 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:01:02,115 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:01:02,115 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:01:02,116 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:01:02,116 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:01:02,116 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:01:02,116 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:01:02,116 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:01:02,133 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-10-13 23:01:02,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-13 23:01:02,139 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:01:02,139 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:01:02,141 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:01:02,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:01:02,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1402897764, now seen corresponding path program 1 times [2019-10-13 23:01:02,153 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:01:02,153 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673100519] [2019-10-13 23:01:02,153 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:02,153 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:02,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:01:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:01:02,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:01:02,243 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673100519] [2019-10-13 23:01:02,244 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:01:02,244 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:01:02,244 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337826914] [2019-10-13 23:01:02,248 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:01:02,248 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:01:02,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:01:02,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:01:02,260 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2019-10-13 23:01:02,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:01:02,285 INFO L93 Difference]: Finished difference Result 41 states and 61 transitions. [2019-10-13 23:01:02,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:01:02,287 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-13 23:01:02,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:01:02,296 INFO L225 Difference]: With dead ends: 41 [2019-10-13 23:01:02,296 INFO L226 Difference]: Without dead ends: 19 [2019-10-13 23:01:02,300 INFO L600 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 [2019-10-13 23:01:02,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-13 23:01:02,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-13 23:01:02,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-13 23:01:02,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2019-10-13 23:01:02,341 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 10 [2019-10-13 23:01:02,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:01:02,341 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2019-10-13 23:01:02,341 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:01:02,342 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2019-10-13 23:01:02,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-13 23:01:02,342 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:01:02,344 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:01:02,344 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:01:02,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:01:02,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1444634955, now seen corresponding path program 1 times [2019-10-13 23:01:02,346 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:01:02,346 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425985807] [2019-10-13 23:01:02,346 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:02,346 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:02,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:01:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:01:02,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:01:02,467 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425985807] [2019-10-13 23:01:02,467 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:01:02,467 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:01:02,467 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943441605] [2019-10-13 23:01:02,469 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:01:02,469 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:01:02,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:01:02,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:01:02,470 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 5 states. [2019-10-13 23:01:02,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:01:02,647 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2019-10-13 23:01:02,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:01:02,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-13 23:01:02,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:01:02,649 INFO L225 Difference]: With dead ends: 25 [2019-10-13 23:01:02,650 INFO L226 Difference]: Without dead ends: 23 [2019-10-13 23:01:02,651 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:01:02,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-13 23:01:02,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-10-13 23:01:02,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-13 23:01:02,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-10-13 23:01:02,661 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 10 [2019-10-13 23:01:02,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:01:02,662 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-10-13 23:01:02,662 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:01:02,662 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-10-13 23:01:02,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-13 23:01:02,663 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:01:02,663 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:01:02,663 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:01:02,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:01:02,664 INFO L82 PathProgramCache]: Analyzing trace with hash -892290774, now seen corresponding path program 1 times [2019-10-13 23:01:02,664 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:01:02,664 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164308251] [2019-10-13 23:01:02,665 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:02,665 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:02,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:01:02,675 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 23:01:02,675 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349137763] [2019-10-13 23:01:02,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:01:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:01:02,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-13 23:01:02,729 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:01:02,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:01:02,851 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:01:02,921 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:01:02,950 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:01:02,954 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:01:02,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:01:02,996 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164308251] [2019-10-13 23:01:02,997 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 23:01:02,997 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349137763] [2019-10-13 23:01:02,997 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2081792826] [2019-10-13 23:01:03,026 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-10-13 23:01:03,026 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:01:03,035 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:01:03,057 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:01:03,059 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:01:03,120 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-13 23:01:03,304 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-13 23:01:03,338 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-13 23:01:03,341 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:01:03,342 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:01:03,342 INFO L193 IcfgInterpreter]: Reachable states at location L24-1 satisfy 62#(and (<= main_~s~0 1) (= main_~s~0 1) (<= main_~n~0 2147483647) (<= 1 main_~t~0) (= main_~t~0 1) (= (+ (* main_~a~0 2) 1) main_~t~0) (= main_~a~0 0) (<= main_~a~0 0) (<= main_~t~0 1) (<= 0 (+ main_~n~0 2147483648)) (<= 0 main_~a~0) (<= 1 main_~s~0)) [2019-10-13 23:01:03,342 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initFINAL satisfy 105#true [2019-10-13 23:01:03,343 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 101#(and (= |__VERIFIER_assert_#in~cond| 1) (not (= 0 __VERIFIER_assert_~cond)) (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 23:01:03,343 INFO L193 IcfgInterpreter]: Reachable states at location L24 satisfy 43#(and (<= main_~s~0 1) (= main_~s~0 1) (<= main_~n~0 2147483647) (<= 1 main_~t~0) (= main_~t~0 1) (= main_~a~0 0) (<= main_~a~0 0) (<= main_~t~0 1) (<= 0 (+ main_~n~0 2147483648)) (<= 0 main_~a~0) (<= 1 main_~s~0)) [2019-10-13 23:01:03,343 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#true [2019-10-13 23:01:03,344 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#true [2019-10-13 23:01:03,344 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 110#true [2019-10-13 23:01:03,344 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 81#(and (= |__VERIFIER_assert_#in~cond| 1) (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 23:01:03,344 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:01:03,345 INFO L193 IcfgInterpreter]: Reachable states at location L7-2 satisfy 96#(and (= |__VERIFIER_assert_#in~cond| 1) (not (= 0 __VERIFIER_assert_~cond)) (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 23:01:03,345 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 76#(and (= |__VERIFIER_assert_#in~cond| 1) (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) [2019-10-13 23:01:03,345 INFO L193 IcfgInterpreter]: Reachable states at location L23-2 satisfy 38#(and (<= main_~s~0 1) (= main_~s~0 1) (<= main_~n~0 2147483647) (<= 1 main_~t~0) (= main_~t~0 1) (= main_~a~0 0) (<= main_~a~0 0) (<= main_~t~0 1) (<= 0 (+ main_~n~0 2147483648)) (<= 0 main_~a~0) (<= 1 main_~s~0)) [2019-10-13 23:01:03,346 INFO L193 IcfgInterpreter]: Reachable states at location L8 satisfy 86#false [2019-10-13 23:01:03,346 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 91#false [2019-10-13 23:01:03,501 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:01:03,502 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 7] total 14 [2019-10-13 23:01:03,502 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715252489] [2019-10-13 23:01:03,504 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:01:03,505 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:01:03,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:01:03,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2019-10-13 23:01:03,505 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 5 states. [2019-10-13 23:01:03,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:01:03,603 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2019-10-13 23:01:03,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:01:03,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-10-13 23:01:03,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:01:03,605 INFO L225 Difference]: With dead ends: 41 [2019-10-13 23:01:03,605 INFO L226 Difference]: Without dead ends: 36 [2019-10-13 23:01:03,606 INFO L600 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 [2019-10-13 23:01:03,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-13 23:01:03,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-10-13 23:01:03,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-13 23:01:03,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2019-10-13 23:01:03,624 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 15 [2019-10-13 23:01:03,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:01:03,626 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2019-10-13 23:01:03,626 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:01:03,626 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2019-10-13 23:01:03,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-13 23:01:03,627 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:01:03,627 INFO L380 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:01:03,840 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:01:03,841 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:01:03,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:01:03,842 INFO L82 PathProgramCache]: Analyzing trace with hash -751011113, now seen corresponding path program 1 times [2019-10-13 23:01:03,842 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:01:03,842 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424282219] [2019-10-13 23:01:03,843 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:03,843 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:03,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:01:03,849 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 23:01:03,850 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [66515165] [2019-10-13 23:01:03,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:01:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:01:03,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-13 23:01:03,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:01:03,968 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 23:01:03,969 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:01:04,115 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 23:01:04,116 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424282219] [2019-10-13 23:01:04,116 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 23:01:04,116 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66515165] [2019-10-13 23:01:04,117 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1903229100] [2019-10-13 23:01:04,118 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-13 23:01:04,119 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:01:04,120 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:01:04,120 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:01:04,121 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:01:04,143 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-13 23:01:04,746 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2019-10-13 23:01:04,804 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-13 23:01:04,806 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:01:04,806 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:01:04,806 INFO L193 IcfgInterpreter]: Reachable states at location L24-1 satisfy 170#(and (<= main_~n~0 2147483647) (<= 1 main_~t~0) (= (+ (* main_~a~0 2) 1) main_~t~0) (<= 0 (+ main_~n~0 2147483648)) (<= 0 main_~a~0) (<= 1 main_~s~0)) [2019-10-13 23:01:04,807 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initFINAL satisfy 286#true [2019-10-13 23:01:04,807 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 282#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= 0 __VERIFIER_assert_~cond)) (<= 0 |__VERIFIER_assert_#in~cond|) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (not (= 0 __VERIFIER_assert_~cond)) (<= 0 |__VERIFIER_assert_#in~cond|) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1)) [2019-10-13 23:01:04,807 INFO L193 IcfgInterpreter]: Reachable states at location L24 satisfy 158#(and (<= main_~n~0 2147483647) (<= 1 main_~t~0) (<= 0 (+ main_~n~0 2147483648)) (<= 0 main_~a~0) (<= 1 main_~s~0)) [2019-10-13 23:01:04,807 INFO L193 IcfgInterpreter]: Reachable states at location L25 satisfy 248#(and (<= main_~n~0 2147483647) (<= 1 main_~t~0) (= (* (+ main_~a~0 1) (+ main_~a~0 1)) main_~s~0) (= (+ (* main_~a~0 2) 1) main_~t~0) (<= 0 (+ main_~n~0 2147483648)) (<= 0 main_~a~0) (<= 1 main_~s~0)) [2019-10-13 23:01:04,808 INFO L193 IcfgInterpreter]: Reachable states at location L26 satisfy 236#(and (<= main_~n~0 2147483647) (<= 1 main_~t~0) (= (* (+ main_~a~0 1) (+ main_~a~0 1)) main_~s~0) (= (+ (* main_~a~0 2) 1) main_~t~0) (<= 0 (+ main_~n~0 2147483648)) (<= 0 main_~a~0) (= 0 (+ (* main_~t~0 main_~t~0) (* main_~s~0 (- 4)) (* main_~t~0 2) 1)) (<= 1 main_~s~0)) [2019-10-13 23:01:04,808 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#true [2019-10-13 23:01:04,808 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#true [2019-10-13 23:01:04,808 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 262#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (or (and (<= __VERIFIER_assert_~cond 0) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1)))) [2019-10-13 23:01:04,809 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 291#true [2019-10-13 23:01:04,809 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:01:04,809 INFO L193 IcfgInterpreter]: Reachable states at location L7-2 satisfy 277#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= 0 __VERIFIER_assert_~cond)) (<= 0 |__VERIFIER_assert_#in~cond|) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (not (= 0 __VERIFIER_assert_~cond)) (<= 0 |__VERIFIER_assert_#in~cond|) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1)) [2019-10-13 23:01:04,809 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 257#(and (or (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)))) [2019-10-13 23:01:04,810 INFO L193 IcfgInterpreter]: Reachable states at location L23-2 satisfy 153#(and (<= main_~n~0 2147483647) (<= 1 main_~t~0) (<= 0 (+ main_~n~0 2147483648)) (<= 0 main_~a~0) (<= 1 main_~s~0)) [2019-10-13 23:01:04,810 INFO L193 IcfgInterpreter]: Reachable states at location L8 satisfy 267#(and (<= __VERIFIER_assert_~cond 0) (<= |__VERIFIER_assert_#in~cond| 0) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 23:01:04,810 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 272#(and (<= __VERIFIER_assert_~cond 0) (<= |__VERIFIER_assert_#in~cond| 0) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 23:01:05,103 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-13 23:01:05,104 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2019-10-13 23:01:05,104 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599234068] [2019-10-13 23:01:05,105 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-13 23:01:05,105 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:01:05,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-13 23:01:05,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2019-10-13 23:01:05,106 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 20 states. [2019-10-13 23:01:05,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:01:05,443 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2019-10-13 23:01:05,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:01:05,445 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 32 [2019-10-13 23:01:05,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:01:05,446 INFO L225 Difference]: With dead ends: 44 [2019-10-13 23:01:05,446 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 23:01:05,447 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2019-10-13 23:01:05,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 23:01:05,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 23:01:05,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 23:01:05,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 23:01:05,448 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2019-10-13 23:01:05,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:01:05,449 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 23:01:05,449 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-10-13 23:01:05,449 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 23:01:05,449 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 23:01:05,653 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:01:05,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 23:01:05,953 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-13 23:01:05,953 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 23:01:05,954 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 23:01:05,954 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 23:01:05,954 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 23:01:05,954 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 23:01:05,954 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 15 42) the Hoare annotation is: true [2019-10-13 23:01:05,954 INFO L443 ceAbstractionStarter]: For program point L26(lines 23 35) no Hoare annotation was computed. [2019-10-13 23:01:05,955 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))) [2019-10-13 23:01:05,955 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 15 42) no Hoare annotation was computed. [2019-10-13 23:01:05,955 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))) [2019-10-13 23:01:05,955 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))) [2019-10-13 23:01:05,956 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))) [2019-10-13 23:01:05,956 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))) [2019-10-13 23:01:05,956 INFO L443 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2019-10-13 23:01:05,956 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))) [2019-10-13 23:01:05,957 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))) [2019-10-13 23:01:05,957 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 6 12) the Hoare annotation is: true [2019-10-13 23:01:05,957 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-10-13 23:01:05,957 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 6 12) no Hoare annotation was computed. [2019-10-13 23:01:05,957 INFO L443 ceAbstractionStarter]: For program point L8(lines 8 9) no Hoare annotation was computed. [2019-10-13 23:01:05,957 INFO L443 ceAbstractionStarter]: For program point L7(lines 7 10) no Hoare annotation was computed. [2019-10-13 23:01:05,958 INFO L443 ceAbstractionStarter]: For program point L7-2(lines 6 12) no Hoare annotation was computed. [2019-10-13 23:01:05,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 11:01:05 BoogieIcfgContainer [2019-10-13 23:01:05,974 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 23:01:05,976 INFO L168 Benchmark]: Toolchain (without parser) took 4483.27 ms. Allocated memory was 136.8 MB in the beginning and 250.1 MB in the end (delta: 113.2 MB). Free memory was 100.1 MB in the beginning and 195.3 MB in the end (delta: -95.2 MB). Peak memory consumption was 123.9 MB. Max. memory is 7.1 GB. [2019-10-13 23:01:05,977 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 136.8 MB. Free memory was 118.9 MB in the beginning and 118.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 23:01:05,978 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.23 ms. Allocated memory is still 136.8 MB. Free memory was 99.9 MB in the beginning and 90.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-10-13 23:01:05,979 INFO L168 Benchmark]: Boogie Preprocessor took 107.30 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 90.4 MB in the beginning and 179.2 MB in the end (delta: -88.8 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2019-10-13 23:01:05,980 INFO L168 Benchmark]: RCFGBuilder took 225.01 ms. Allocated memory is still 200.3 MB. Free memory was 178.5 MB in the beginning and 166.7 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2019-10-13 23:01:05,981 INFO L168 Benchmark]: TraceAbstraction took 3915.68 ms. Allocated memory was 200.3 MB in the beginning and 250.1 MB in the end (delta: 49.8 MB). Free memory was 166.0 MB in the beginning and 195.3 MB in the end (delta: -29.2 MB). Peak memory consumption was 126.4 MB. Max. memory is 7.1 GB. [2019-10-13 23:01:05,987 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 136.8 MB. Free memory was 118.9 MB in the beginning and 118.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 231.23 ms. Allocated memory is still 136.8 MB. Free memory was 99.9 MB in the beginning and 90.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.30 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 90.4 MB in the beginning and 179.2 MB in the end (delta: -88.8 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 225.01 ms. Allocated memory is still 200.3 MB. Free memory was 178.5 MB in the beginning and 166.7 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3915.68 ms. Allocated memory was 200.3 MB in the beginning and 250.1 MB in the end (delta: 49.8 MB). Free memory was 166.0 MB in the beginning and 195.3 MB in the end (delta: -29.2 MB). Peak memory consumption was 126.4 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: 0.2s, 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, 0.9s 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, 216 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 413 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s 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]: 1012, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 96, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 30, TOOLS_POST_TIME[ms]: 15, TOOLS_POST_CALL_APPLICATIONS: 43, TOOLS_POST_CALL_TIME[ms]: 154, TOOLS_POST_RETURN_APPLICATIONS: 34, TOOLS_POST_RETURN_TIME[ms]: 45, TOOLS_QUANTIFIERELIM_APPLICATIONS: 107, TOOLS_QUANTIFIERELIM_TIME[ms]: 175, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 12, FLUID_QUERY_TIME[ms]: 7, FLUID_QUERIES: 99, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 69, DOMAIN_JOIN_TIME[ms]: 573, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 51, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 7, DOMAIN_ISBOTTOM_APPLICATIONS: 21, DOMAIN_ISBOTTOM_TIME[ms]: 42, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 391, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 390, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 34, CALL_SUMMARIZER_CACHE_MISSES: 4, CALL_SUMMARIZER_OVERALL_TIME[ms]: 26, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 26, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 5, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 28, DAG_COMPRESSION_PROCESSED_NODES: 193, DAG_COMPRESSION_RETAINED_NODES: 116, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...