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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/nla-digbench/sqrt1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:26:25,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:26:25,102 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:26:25,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:26:25,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:26:25,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:26:25,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:26:25,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:26:25,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:26:25,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:26:25,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:26:25,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:26:25,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:26:25,138 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:26:25,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:26:25,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:26:25,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:26:25,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:26:25,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:26:25,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:26:25,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:26:25,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:26:25,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:26:25,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:26:25,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 13:26:25,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:26:25,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:26:25,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:26:25,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:26:25,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:26:25,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:26:25,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:26:25,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:26:25,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:26:25,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:26:25,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:26:25,169 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:26:25,191 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:26:25,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:26:25,192 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:26:25,192 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:26:25,193 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:26:25,193 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:26:25,193 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:26:25,193 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:26:25,193 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:26:25,194 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:26:25,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:26:25,195 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:26:25,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:26:25,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:26:25,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:26:25,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:26:25,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:26:25,197 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:26:25,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:26:25,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:26:25,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:26:25,198 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:26:25,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:26:25,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:26:25,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:26:25,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:26:25,199 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:26:25,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:26:25,199 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:26:25,200 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:26:25,252 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:26:25,265 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:26:25,268 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:26:25,269 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:26:25,270 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:26:25,271 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/sqrt1.c [2019-09-20 13:26:25,329 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3d8a8ebf/eeb11744b0454a5b9599d8407e773474/FLAGa8d8730bc [2019-09-20 13:26:25,761 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:26:25,762 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/sqrt1.c [2019-09-20 13:26:25,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3d8a8ebf/eeb11744b0454a5b9599d8407e773474/FLAGa8d8730bc [2019-09-20 13:26:26,155 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3d8a8ebf/eeb11744b0454a5b9599d8407e773474 [2019-09-20 13:26:26,165 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:26:26,166 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:26:26,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:26:26,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:26:26,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:26:26,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:26:26" (1/1) ... [2019-09-20 13:26:26,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36edca5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:26, skipping insertion in model container [2019-09-20 13:26:26,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:26:26" (1/1) ... [2019-09-20 13:26:26,181 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:26:26,199 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:26:26,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:26:26,353 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:26:26,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:26:26,384 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:26:26,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:26 WrapperNode [2019-09-20 13:26:26,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:26:26,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:26:26,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:26:26,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:26:26,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:26" (1/1) ... [2019-09-20 13:26:26,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:26" (1/1) ... [2019-09-20 13:26:26,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:26" (1/1) ... [2019-09-20 13:26:26,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:26" (1/1) ... [2019-09-20 13:26:26,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:26" (1/1) ... [2019-09-20 13:26:26,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:26" (1/1) ... [2019-09-20 13:26:26,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:26" (1/1) ... [2019-09-20 13:26:26,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:26:26,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:26:26,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:26:26,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:26:26,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:26" (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 [2019-09-20 13:26:26,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:26:26,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:26:26,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 13:26:26,582 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:26:26,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:26:26,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:26:26,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-20 13:26:26,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 13:26:26,583 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:26:26,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:26:26,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:26:26,743 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:26:26,743 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-20 13:26:26,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:26:26 BoogieIcfgContainer [2019-09-20 13:26:26,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:26:26,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:26:26,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:26:26,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:26:26,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:26:26" (1/3) ... [2019-09-20 13:26:26,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b6fe1b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:26:26, skipping insertion in model container [2019-09-20 13:26:26,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:26" (2/3) ... [2019-09-20 13:26:26,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b6fe1b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:26:26, skipping insertion in model container [2019-09-20 13:26:26,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:26:26" (3/3) ... [2019-09-20 13:26:26,753 INFO L109 eAbstractionObserver]: Analyzing ICFG sqrt1.c [2019-09-20 13:26:26,763 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:26:26,771 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:26:26,788 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:26:26,830 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:26:26,830 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:26:26,830 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:26:26,830 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:26:26,831 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:26:26,831 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:26:26,831 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:26:26,831 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:26:26,851 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-09-20 13:26:26,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-20 13:26:26,861 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:26:26,862 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:26:26,870 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:26:26,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:26:26,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1435220999, now seen corresponding path program 1 times [2019-09-20 13:26:26,879 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:26:26,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:26,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:26:26,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:26,943 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:26:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:26:27,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:26:27,010 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:26:27,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:26:27,011 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:26:27,015 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:26:27,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:26:27,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:26:27,033 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-09-20 13:26:27,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:26:27,050 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2019-09-20 13:26:27,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:26:27,052 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-20 13:26:27,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:26:27,061 INFO L225 Difference]: With dead ends: 24 [2019-09-20 13:26:27,061 INFO L226 Difference]: Without dead ends: 19 [2019-09-20 13:26:27,063 INFO L636 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 [2019-09-20 13:26:27,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-09-20 13:26:27,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-09-20 13:26:27,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-09-20 13:26:27,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2019-09-20 13:26:27,103 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 10 [2019-09-20 13:26:27,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:26:27,103 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2019-09-20 13:26:27,104 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:26:27,104 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2019-09-20 13:26:27,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-20 13:26:27,104 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:26:27,105 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:26:27,105 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:26:27,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:26:27,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1444634955, now seen corresponding path program 1 times [2019-09-20 13:26:27,106 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:26:27,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:27,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:26:27,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:27,108 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:26:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:26:27,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:26:27,231 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:26:27,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:26:27,231 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:26:27,233 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:26:27,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:26:27,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:26:27,234 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 5 states. [2019-09-20 13:26:27,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:26:27,313 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2019-09-20 13:26:27,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:26:27,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-20 13:26:27,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:26:27,315 INFO L225 Difference]: With dead ends: 23 [2019-09-20 13:26:27,315 INFO L226 Difference]: Without dead ends: 23 [2019-09-20 13:26:27,316 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:26:27,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-09-20 13:26:27,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-09-20 13:26:27,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-09-20 13:26:27,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-09-20 13:26:27,325 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 10 [2019-09-20 13:26:27,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:26:27,325 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-09-20 13:26:27,326 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:26:27,326 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-09-20 13:26:27,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-20 13:26:27,327 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:26:27,327 INFO L407 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:26:27,327 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:26:27,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:26:27,328 INFO L82 PathProgramCache]: Analyzing trace with hash -892290774, now seen corresponding path program 1 times [2019-09-20 13:26:27,328 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:26:27,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:27,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:26:27,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:27,330 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:26:27,338 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-20 13:26:27,339 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-20 13:26:27,339 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG 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) [2019-09-20 13:26:27,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:26:27,358 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-20 13:26:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:26:27,369 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2019-09-20 13:26:27,371 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [30], [33], [35], [38], [40], [41], [42], [43], [45], [46], [47] [2019-09-20 13:26:27,404 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:26:27,404 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:26:27,506 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-20 13:26:27,508 INFO L272 AbstractInterpreter]: Visited 14 different actions 19 times. Never merged. Never widened. Performed 17 root evaluator evaluations with a maximum evaluation depth of 7. Performed 17 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Never found a fixpoint. Largest state had 5 variables. [2019-09-20 13:26:27,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:26:27,512 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-20 13:26:27,512 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:26:27,512 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:26:27,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:26:27,543 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-20 13:26:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:26:27,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-20 13:26:27,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:26:27,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:26:27,681 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-20 13:26:27,757 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:26:27,784 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:26:27,788 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:26:27,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:26:27,821 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:26:27,822 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2019-09-20 13:26:27,822 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-20 13:26:27,822 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-20 13:26:27,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-20 13:26:27,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-09-20 13:26:27,823 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 12 states. [2019-09-20 13:26:28,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:26:28,066 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2019-09-20 13:26:28,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-20 13:26:28,067 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2019-09-20 13:26:28,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:26:28,069 INFO L225 Difference]: With dead ends: 41 [2019-09-20 13:26:28,070 INFO L226 Difference]: Without dead ends: 38 [2019-09-20 13:26:28,070 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:26:28,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-09-20 13:26:28,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2019-09-20 13:26:28,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-09-20 13:26:28,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2019-09-20 13:26:28,078 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 15 [2019-09-20 13:26:28,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:26:28,078 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2019-09-20 13:26:28,079 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-20 13:26:28,079 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2019-09-20 13:26:28,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-09-20 13:26:28,080 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:26:28,080 INFO L407 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:26:28,081 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:26:28,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:26:28,081 INFO L82 PathProgramCache]: Analyzing trace with hash -2078000632, now seen corresponding path program 1 times [2019-09-20 13:26:28,081 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:26:28,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:28,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:26:28,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:28,083 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:26:28,089 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-20 13:26:28,090 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-20 13:26:28,090 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-20 13:26:28,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:26:28,118 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-20 13:26:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:26:28,134 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 38 with the following transitions: [2019-09-20 13:26:28,134 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [21], [30], [33], [35], [38], [40], [41], [42], [43], [45], [46], [47], [48], [49], [50] [2019-09-20 13:26:28,137 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:26:28,137 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:26:28,560 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-20 13:26:28,577 INFO L272 AbstractInterpreter]: Visited 18 different actions 166 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Performed 218 root evaluator evaluations with a maximum evaluation depth of 10. Performed 218 inverse root evaluator evaluations with a maximum inverse evaluation depth of 10. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2019-09-20 13:26:28,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:26:28,577 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-20 13:26:28,578 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:26:28,578 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:26:28,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:26:28,609 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-20 13:26:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:26:28,643 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 21 conjunts are in the unsatisfiable core [2019-09-20 13:26:28,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:26:28,756 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-09-20 13:26:28,756 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-20 13:26:28,852 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:26:28,878 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:26:28,918 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-09-20 13:26:28,923 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:26:28,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2019-09-20 13:26:28,923 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-20 13:26:28,925 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-20 13:26:28,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-20 13:26:28,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:26:28,926 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 13 states. [2019-09-20 13:26:29,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:26:29,192 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2019-09-20 13:26:29,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-20 13:26:29,193 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2019-09-20 13:26:29,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:26:29,194 INFO L225 Difference]: With dead ends: 46 [2019-09-20 13:26:29,194 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:26:29,195 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2019-09-20 13:26:29,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:26:29,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:26:29,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:26:29,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:26:29,196 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2019-09-20 13:26:29,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:26:29,196 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:26:29,197 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-20 13:26:29,197 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:26:29,197 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:26:29,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:26:29 BoogieIcfgContainer [2019-09-20 13:26:29,203 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:26:29,206 INFO L168 Benchmark]: Toolchain (without parser) took 3038.43 ms. Allocated memory was 133.2 MB in the beginning and 224.9 MB in the end (delta: 91.8 MB). Free memory was 88.5 MB in the beginning and 68.7 MB in the end (delta: 19.8 MB). Peak memory consumption was 111.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:29,207 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 133.2 MB. Free memory was 107.3 MB in the beginning and 107.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:26:29,208 INFO L168 Benchmark]: CACSL2BoogieTranslator took 217.61 ms. Allocated memory is still 133.2 MB. Free memory was 88.3 MB in the beginning and 78.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:29,213 INFO L168 Benchmark]: Boogie Preprocessor took 131.14 ms. Allocated memory was 133.2 MB in the beginning and 200.3 MB in the end (delta: 67.1 MB). Free memory was 78.8 MB in the beginning and 176.7 MB in the end (delta: -97.9 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:29,214 INFO L168 Benchmark]: RCFGBuilder took 228.13 ms. Allocated memory is still 200.3 MB. Free memory was 176.7 MB in the beginning and 164.9 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:29,216 INFO L168 Benchmark]: TraceAbstraction took 2457.11 ms. Allocated memory was 200.3 MB in the beginning and 224.9 MB in the end (delta: 24.6 MB). Free memory was 164.2 MB in the beginning and 68.7 MB in the end (delta: 95.6 MB). Peak memory consumption was 120.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:29,239 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 133.2 MB. Free memory was 107.3 MB in the beginning and 107.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 217.61 ms. Allocated memory is still 133.2 MB. Free memory was 88.3 MB in the beginning and 78.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.14 ms. Allocated memory was 133.2 MB in the beginning and 200.3 MB in the end (delta: 67.1 MB). Free memory was 78.8 MB in the beginning and 176.7 MB in the end (delta: -97.9 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 228.13 ms. Allocated memory is still 200.3 MB. Free memory was 176.7 MB in the beginning and 164.9 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2457.11 ms. Allocated memory was 200.3 MB in the beginning and 224.9 MB in the end (delta: 24.6 MB). Free memory was 164.2 MB in the beginning and 68.7 MB in the end (delta: 95.6 MB). Peak memory consumption was 120.2 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. SAFE Result, 2.3s OverallTime, 4 OverallIterations, 6 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 79 SDtfs, 47 SDslu, 186 SDs, 0 SdLazy, 265 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s 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, 0.5s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 13882 SizeOfPredicates, 8 NumberOfNonLiveVariables, 122 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 80/112 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...