java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/loop-lit/cggmp2005_variant_true-unreach-call_true-termination.c.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 20:41:24,099 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 20:41:24,101 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 20:41:24,119 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 20:41:24,120 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 20:41:24,121 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 20:41:24,125 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 20:41:24,129 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 20:41:24,132 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 20:41:24,133 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 20:41:24,135 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 20:41:24,136 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 20:41:24,137 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 20:41:24,138 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 20:41:24,139 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 20:41:24,148 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 20:41:24,149 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 20:41:24,152 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 20:41:24,157 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 20:41:24,159 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 20:41:24,163 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 20:41:24,164 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 20:41:24,166 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 20:41:24,166 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 20:41:24,166 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 20:41:24,169 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 20:41:24,170 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 20:41:24,170 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 20:41:24,171 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 20:41:24,174 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 20:41:24,174 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 20:41:24,175 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-12 20:41:24,178 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 20:41:24,207 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 20:41:24,207 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 20:41:24,208 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 20:41:24,208 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 20:41:24,208 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 20:41:24,209 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 20:41:24,209 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 20:41:24,210 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 20:41:24,210 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 20:41:24,210 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 20:41:24,210 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 20:41:24,210 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 20:41:24,211 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 20:41:24,211 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 20:41:24,212 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 20:41:24,212 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 20:41:24,212 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 20:41:24,212 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 20:41:24,212 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 20:41:24,213 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 20:41:24,213 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 20:41:24,213 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 20:41:24,213 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 20:41:24,213 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 20:41:24,214 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 20:41:24,214 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 20:41:24,214 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 20:41:24,214 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 20:41:24,214 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 20:41:24,215 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 20:41:24,215 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 20:41:24,215 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 20:41:24,215 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 20:41:24,215 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 20:41:24,216 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 20:41:24,272 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 20:41:24,287 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 20:41:24,292 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 20:41:24,294 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 20:41:24,294 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 20:41:24,295 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005_variant_true-unreach-call_true-termination.c.i [2018-11-12 20:41:24,364 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/863a5da7e/4aa5488bc96a42f8aebe3ca145d9549d/FLAGeead68be8 [2018-11-12 20:41:24,804 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 20:41:24,805 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005_variant_true-unreach-call_true-termination.c.i [2018-11-12 20:41:24,813 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/863a5da7e/4aa5488bc96a42f8aebe3ca145d9549d/FLAGeead68be8 [2018-11-12 20:41:24,837 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/863a5da7e/4aa5488bc96a42f8aebe3ca145d9549d [2018-11-12 20:41:24,848 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 20:41:24,850 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 20:41:24,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 20:41:24,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 20:41:24,854 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 20:41:24,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:41:24" (1/1) ... [2018-11-12 20:41:24,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c65d7eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:24, skipping insertion in model container [2018-11-12 20:41:24,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:41:24" (1/1) ... [2018-11-12 20:41:24,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 20:41:24,893 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 20:41:25,123 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 20:41:25,127 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 20:41:25,149 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 20:41:25,169 INFO L193 MainTranslator]: Completed translation [2018-11-12 20:41:25,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:25 WrapperNode [2018-11-12 20:41:25,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 20:41:25,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 20:41:25,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 20:41:25,171 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 20:41:25,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:25" (1/1) ... [2018-11-12 20:41:25,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:25" (1/1) ... [2018-11-12 20:41:25,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 20:41:25,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 20:41:25,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 20:41:25,197 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 20:41:25,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:25" (1/1) ... [2018-11-12 20:41:25,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:25" (1/1) ... [2018-11-12 20:41:25,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:25" (1/1) ... [2018-11-12 20:41:25,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:25" (1/1) ... [2018-11-12 20:41:25,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:25" (1/1) ... [2018-11-12 20:41:25,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:25" (1/1) ... [2018-11-12 20:41:25,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:25" (1/1) ... [2018-11-12 20:41:25,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 20:41:25,222 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 20:41:25,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 20:41:25,223 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 20:41:25,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:25" (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 [2018-11-12 20:41:25,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 20:41:25,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 20:41:25,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 20:41:25,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 20:41:25,361 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 20:41:25,361 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 20:41:25,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-12 20:41:25,362 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-12 20:41:25,588 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 20:41:25,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:41:25 BoogieIcfgContainer [2018-11-12 20:41:25,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 20:41:25,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 20:41:25,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 20:41:25,593 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 20:41:25,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:41:24" (1/3) ... [2018-11-12 20:41:25,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7facb12c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:41:25, skipping insertion in model container [2018-11-12 20:41:25,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:25" (2/3) ... [2018-11-12 20:41:25,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7facb12c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:41:25, skipping insertion in model container [2018-11-12 20:41:25,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:41:25" (3/3) ... [2018-11-12 20:41:25,596 INFO L112 eAbstractionObserver]: Analyzing ICFG cggmp2005_variant_true-unreach-call_true-termination.c.i [2018-11-12 20:41:25,607 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 20:41:25,615 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 20:41:25,638 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 20:41:25,713 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 20:41:25,713 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 20:41:25,713 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 20:41:25,715 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 20:41:25,715 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 20:41:25,715 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 20:41:25,715 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 20:41:25,716 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 20:41:25,738 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-12 20:41:25,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-12 20:41:25,745 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:41:25,746 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 20:41:25,749 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:41:25,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:41:25,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1281911547, now seen corresponding path program 1 times [2018-11-12 20:41:25,762 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:41:25,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:25,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:41:25,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:25,807 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:41:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:41:25,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:41:25,870 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 20:41:25,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-12 20:41:25,871 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 20:41:25,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-12 20:41:25,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-12 20:41:25,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-12 20:41:25,892 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-11-12 20:41:25,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:41:25,917 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-11-12 20:41:25,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-12 20:41:25,919 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-11-12 20:41:25,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:41:25,927 INFO L225 Difference]: With dead ends: 32 [2018-11-12 20:41:25,927 INFO L226 Difference]: Without dead ends: 13 [2018-11-12 20:41:25,930 INFO L604 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 [2018-11-12 20:41:25,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-12 20:41:25,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-12 20:41:25,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-12 20:41:25,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-12 20:41:25,979 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-11-12 20:41:25,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:41:25,980 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-12 20:41:25,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-12 20:41:25,980 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-12 20:41:25,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-12 20:41:25,983 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:41:25,984 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 20:41:25,984 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:41:25,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:41:25,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1335306055, now seen corresponding path program 1 times [2018-11-12 20:41:25,985 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:41:25,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:25,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:41:25,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:25,987 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:41:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:41:26,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:41:26,068 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 20:41:26,068 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 20:41:26,069 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 20:41:26,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 20:41:26,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 20:41:26,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 20:41:26,072 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2018-11-12 20:41:26,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:41:26,095 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-11-12 20:41:26,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 20:41:26,096 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-11-12 20:41:26,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:41:26,096 INFO L225 Difference]: With dead ends: 20 [2018-11-12 20:41:26,097 INFO L226 Difference]: Without dead ends: 15 [2018-11-12 20:41:26,098 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 20:41:26,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-12 20:41:26,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-12 20:41:26,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-12 20:41:26,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-12 20:41:26,106 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-11-12 20:41:26,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:41:26,107 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-12 20:41:26,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 20:41:26,107 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-12 20:41:26,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-12 20:41:26,108 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:41:26,108 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 20:41:26,108 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:41:26,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:41:26,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1931535679, now seen corresponding path program 1 times [2018-11-12 20:41:26,111 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:41:26,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:26,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:41:26,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:26,113 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:41:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:41:26,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:41:26,531 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:41:26,531 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 20:41:26,532 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-11-12 20:41:26,536 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [25], [28], [30], [36], [37], [38], [40] [2018-11-12 20:41:26,572 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 20:41:26,573 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 20:41:26,893 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 20:41:26,894 INFO L272 AbstractInterpreter]: Visited 13 different actions 58 times. Merged at 3 different actions 20 times. Widened at 1 different actions 3 times. Performed 194 root evaluator evaluations with a maximum evaluation depth of 4. Performed 194 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2018-11-12 20:41:26,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:41:26,940 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 20:41:26,940 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:41:26,940 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 20:41:26,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:41:26,961 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 20:41:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:41:27,013 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:41:27,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:41:27,567 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:41:27,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:41:27,928 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 20:41:27,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2018-11-12 20:41:27,928 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 20:41:27,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 20:41:27,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 20:41:27,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-11-12 20:41:27,930 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 11 states. [2018-11-12 20:41:28,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:41:28,110 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-11-12 20:41:28,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 20:41:28,114 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2018-11-12 20:41:28,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:41:28,115 INFO L225 Difference]: With dead ends: 22 [2018-11-12 20:41:28,115 INFO L226 Difference]: Without dead ends: 17 [2018-11-12 20:41:28,116 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-11-12 20:41:28,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-12 20:41:28,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-12 20:41:28,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-12 20:41:28,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-11-12 20:41:28,121 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-11-12 20:41:28,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:41:28,122 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-11-12 20:41:28,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 20:41:28,122 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-11-12 20:41:28,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-12 20:41:28,123 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:41:28,123 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 20:41:28,123 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:41:28,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:41:28,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1745348677, now seen corresponding path program 2 times [2018-11-12 20:41:28,124 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:41:28,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:28,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:41:28,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:28,126 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:41:28,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:41:28,567 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 5 [2018-11-12 20:41:28,681 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-12 20:41:28,682 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:41:28,682 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 20:41:28,682 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-12 20:41:28,683 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 20:41:28,683 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:41:28,683 INFO L192 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 [2018-11-12 20:41:28,696 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-12 20:41:28,696 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-12 20:41:28,713 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-12 20:41:28,713 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-12 20:41:28,716 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:41:29,008 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:41:29,009 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:41:29,224 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:41:29,247 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 20:41:29,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 17 [2018-11-12 20:41:29,248 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 20:41:29,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-12 20:41:29,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-12 20:41:29,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2018-11-12 20:41:29,250 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 12 states. [2018-11-12 20:41:29,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:41:29,691 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2018-11-12 20:41:29,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-12 20:41:29,691 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2018-11-12 20:41:29,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:41:29,692 INFO L225 Difference]: With dead ends: 20 [2018-11-12 20:41:29,692 INFO L226 Difference]: Without dead ends: 0 [2018-11-12 20:41:29,693 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2018-11-12 20:41:29,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-12 20:41:29,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-12 20:41:29,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-12 20:41:29,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-12 20:41:29,694 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2018-11-12 20:41:29,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:41:29,695 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-12 20:41:29,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-12 20:41:29,695 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-12 20:41:29,695 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-12 20:41:29,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-12 20:41:29,860 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-12 20:41:29,861 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-12 20:41:29,861 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-12 20:41:29,861 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-12 20:41:29,861 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-12 20:41:29,861 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-12 20:41:29,861 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 23) the Hoare annotation is: true [2018-11-12 20:41:29,861 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 23) no Hoare annotation was computed. [2018-11-12 20:41:29,861 INFO L425 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-11-12 20:41:29,861 INFO L425 ceAbstractionStarter]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2018-11-12 20:41:29,862 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-11-12 20:41:29,862 INFO L421 ceAbstractionStarter]: At program point L16-3(lines 16 20) the Hoare annotation is: (let ((.cse0 (+ (* 2 main_~mid~0) main_~lo~0))) (and (<= .cse0 main_~hi~0) (<= main_~hi~0 .cse0) (<= main_~lo~0 main_~hi~0))) [2018-11-12 20:41:29,862 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 23) no Hoare annotation was computed. [2018-11-12 20:41:29,862 INFO L421 ceAbstractionStarter]: At program point L16-4(lines 16 20) the Hoare annotation is: (or (let ((.cse0 (+ (* 2 main_~mid~0) main_~lo~0))) (and (<= .cse0 main_~hi~0) (<= main_~hi~0 main_~lo~0) (<= main_~hi~0 .cse0) (<= main_~lo~0 main_~hi~0))) (and (<= main_~lo~0 1) (exists ((v_main_~mid~0_8 Int)) (and (< 0 v_main_~mid~0_8) (= (* 2 v_main_~mid~0_8) (+ main_~hi~0 1)) (<= v_main_~mid~0_8 (+ main_~mid~0 1)))) (<= 1 main_~lo~0) (exists ((v_main_~mid~0_8 Int)) (and (< 0 v_main_~mid~0_8) (= (* 2 v_main_~mid~0_8) (+ main_~hi~0 1)) (<= v_main_~mid~0_8 1))))) [2018-11-12 20:41:29,862 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-12 20:41:29,862 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-12 20:41:29,863 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-12 20:41:29,863 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-12 20:41:29,863 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-12 20:41:29,863 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-12 20:41:29,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 08:41:29 BoogieIcfgContainer [2018-11-12 20:41:29,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 20:41:29,876 INFO L168 Benchmark]: Toolchain (without parser) took 5027.22 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.7 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -577.8 MB). Peak memory consumption was 159.9 MB. Max. memory is 7.1 GB. [2018-11-12 20:41:29,877 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 20:41:29,878 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-11-12 20:41:29,879 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.02 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 20:41:29,880 INFO L168 Benchmark]: Boogie Preprocessor took 24.98 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 20:41:29,880 INFO L168 Benchmark]: RCFGBuilder took 366.29 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -796.0 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2018-11-12 20:41:29,881 INFO L168 Benchmark]: TraceAbstraction took 4285.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 207.6 MB). Peak memory consumption was 207.6 MB. Max. memory is 7.1 GB. [2018-11-12 20:41:29,886 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 319.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 26.02 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.98 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 366.29 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -796.0 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4285.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 207.6 MB). Peak memory consumption was 207.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 16]: Loop Invariant Derived loop invariant: (2 * mid + lo <= hi && hi <= 2 * mid + lo) && lo <= hi - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. SAFE Result, 4.1s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 54 SDtfs, 13 SDslu, 101 SDs, 0 SdLazy, 73 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 43 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.4s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 17 NumberOfFragments, 84 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 118 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 105 ConstructedInterpolants, 6 QuantifiedInterpolants, 9429 SizeOfPredicates, 8 NumberOfNonLiveVariables, 86 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 2/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...