java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-invgen/large_const_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 10:54:07,192 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 10:54:07,193 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 10:54:07,205 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 10:54:07,205 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 10:54:07,206 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 10:54:07,207 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 10:54:07,209 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 10:54:07,211 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 10:54:07,211 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 10:54:07,212 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 10:54:07,213 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 10:54:07,213 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 10:54:07,214 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 10:54:07,216 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 10:54:07,216 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 10:54:07,217 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 10:54:07,219 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 10:54:07,221 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 10:54:07,223 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 10:54:07,224 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 10:54:07,225 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 10:54:07,227 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 10:54:07,228 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 10:54:07,228 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 10:54:07,229 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 10:54:07,230 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 10:54:07,231 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 10:54:07,231 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 10:54:07,232 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 10:54:07,233 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 10:54:07,233 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 10:54:07,234 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 10:54:07,234 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 10:54:07,235 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 10:54:07,238 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 10:54:07,239 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 10:54:07,263 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 10:54:07,264 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 10:54:07,265 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 10:54:07,265 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 10:54:07,266 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 10:54:07,266 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 10:54:07,266 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 10:54:07,266 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 10:54:07,266 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 10:54:07,267 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 10:54:07,267 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 10:54:07,268 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 10:54:07,268 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 10:54:07,268 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 10:54:07,269 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 10:54:07,269 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 10:54:07,269 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 10:54:07,269 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 10:54:07,269 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 10:54:07,270 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 10:54:07,270 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 10:54:07,270 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 10:54:07,270 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 10:54:07,272 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 10:54:07,272 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 10:54:07,272 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 10:54:07,272 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 10:54:07,273 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 10:54:07,273 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 10:54:07,273 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 10:54:07,273 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 10:54:07,273 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 10:54:07,274 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 10:54:07,325 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 10:54:07,343 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 10:54:07,349 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 10:54:07,350 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 10:54:07,351 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 10:54:07,352 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/large_const_true-unreach-call_true-termination.i [2018-07-24 10:54:07,691 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ff23fe44/48555531bc7c4f75a050f634cf195c7c/FLAGb7d485bd8 [2018-07-24 10:54:07,838 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 10:54:07,839 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const_true-unreach-call_true-termination.i [2018-07-24 10:54:07,846 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ff23fe44/48555531bc7c4f75a050f634cf195c7c/FLAGb7d485bd8 [2018-07-24 10:54:07,861 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ff23fe44/48555531bc7c4f75a050f634cf195c7c [2018-07-24 10:54:07,872 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 10:54:07,873 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 10:54:07,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 10:54:07,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 10:54:07,882 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 10:54:07,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 10:54:07" (1/1) ... [2018-07-24 10:54:07,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53775257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:07, skipping insertion in model container [2018-07-24 10:54:07,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 10:54:07" (1/1) ... [2018-07-24 10:54:08,069 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 10:54:08,118 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 10:54:08,133 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 10:54:08,141 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 10:54:08,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:08 WrapperNode [2018-07-24 10:54:08,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 10:54:08,159 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 10:54:08,159 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 10:54:08,159 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 10:54:08,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:08" (1/1) ... [2018-07-24 10:54:08,176 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:08" (1/1) ... [2018-07-24 10:54:08,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 10:54:08,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 10:54:08,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 10:54:08,184 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 10:54:08,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:08" (1/1) ... [2018-07-24 10:54:08,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:08" (1/1) ... [2018-07-24 10:54:08,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:08" (1/1) ... [2018-07-24 10:54:08,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:08" (1/1) ... [2018-07-24 10:54:08,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:08" (1/1) ... [2018-07-24 10:54:08,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:08" (1/1) ... [2018-07-24 10:54:08,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:08" (1/1) ... [2018-07-24 10:54:08,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 10:54:08,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 10:54:08,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 10:54:08,216 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 10:54:08,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:08" (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 [2018-07-24 10:54:08,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 10:54:08,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 10:54:08,290 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_large_const_true_unreach_call_true_termination_i____VERIFIER_assert [2018-07-24 10:54:08,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_large_const_true_unreach_call_true_termination_i____VERIFIER_assert [2018-07-24 10:54:08,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 10:54:08,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 10:54:08,291 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 10:54:08,291 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 10:54:08,912 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 10:54:08,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 10:54:08 BoogieIcfgContainer [2018-07-24 10:54:08,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 10:54:08,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 10:54:08,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 10:54:08,918 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 10:54:08,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 10:54:07" (1/3) ... [2018-07-24 10:54:08,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59edd2de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 10:54:08, skipping insertion in model container [2018-07-24 10:54:08,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:08" (2/3) ... [2018-07-24 10:54:08,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59edd2de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 10:54:08, skipping insertion in model container [2018-07-24 10:54:08,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 10:54:08" (3/3) ... [2018-07-24 10:54:08,921 INFO L112 eAbstractionObserver]: Analyzing ICFG large_const_true-unreach-call_true-termination.i [2018-07-24 10:54:08,931 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 10:54:08,939 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 10:54:08,986 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 10:54:08,987 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 10:54:08,987 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 10:54:08,987 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 10:54:08,987 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 10:54:08,987 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 10:54:08,987 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 10:54:08,987 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 10:54:08,988 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 10:54:09,005 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-07-24 10:54:09,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-24 10:54:09,011 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:09,012 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:54:09,012 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_large_const_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:09,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1750555721, now seen corresponding path program 1 times [2018-07-24 10:54:09,020 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:09,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:09,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:09,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:09,069 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:09,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:09,135 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 10:54:09,136 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-24 10:54:09,136 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:54:09,141 INFO L450 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-07-24 10:54:09,156 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-07-24 10:54:09,156 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-07-24 10:54:09,159 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2018-07-24 10:54:09,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:09,182 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2018-07-24 10:54:09,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-07-24 10:54:09,183 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-07-24 10:54:09,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:09,194 INFO L225 Difference]: With dead ends: 43 [2018-07-24 10:54:09,194 INFO L226 Difference]: Without dead ends: 22 [2018-07-24 10:54:09,198 INFO L573 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 [2018-07-24 10:54:09,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-07-24 10:54:09,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-07-24 10:54:09,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-07-24 10:54:09,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2018-07-24 10:54:09,237 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 14 [2018-07-24 10:54:09,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:09,238 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2018-07-24 10:54:09,238 INFO L472 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-07-24 10:54:09,238 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2018-07-24 10:54:09,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-24 10:54:09,239 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:09,239 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:54:09,240 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_large_const_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:09,240 INFO L82 PathProgramCache]: Analyzing trace with hash -325731125, now seen corresponding path program 1 times [2018-07-24 10:54:09,240 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:09,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:09,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:09,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:09,242 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:09,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:09,343 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 10:54:09,344 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 10:54:09,344 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:54:09,345 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 10:54:09,346 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 10:54:09,346 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 10:54:09,346 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 5 states. [2018-07-24 10:54:09,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:09,496 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2018-07-24 10:54:09,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 10:54:09,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-07-24 10:54:09,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:09,498 INFO L225 Difference]: With dead ends: 37 [2018-07-24 10:54:09,498 INFO L226 Difference]: Without dead ends: 24 [2018-07-24 10:54:09,499 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-24 10:54:09,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-07-24 10:54:09,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-07-24 10:54:09,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-07-24 10:54:09,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2018-07-24 10:54:09,505 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2018-07-24 10:54:09,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:09,506 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-07-24 10:54:09,506 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 10:54:09,506 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2018-07-24 10:54:09,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-07-24 10:54:09,507 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:09,507 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:54:09,508 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_large_const_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:09,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1659274082, now seen corresponding path program 1 times [2018-07-24 10:54:09,508 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:09,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:09,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:09,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:09,510 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:09,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:09,687 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:09,687 INFO L191 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 [2018-07-24 10:54:09,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:09,705 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:54:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:09,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:09,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:09,978 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:10,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:10,306 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:10,306 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:54:10,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:10,323 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:54:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:10,351 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:10,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:10,378 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:10,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:10,426 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:54:10,426 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7] total 13 [2018-07-24 10:54:10,426 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:54:10,426 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 10:54:10,427 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 10:54:10,427 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2018-07-24 10:54:10,428 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 8 states. [2018-07-24 10:54:10,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:10,720 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2018-07-24 10:54:10,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 10:54:10,720 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2018-07-24 10:54:10,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:10,723 INFO L225 Difference]: With dead ends: 47 [2018-07-24 10:54:10,723 INFO L226 Difference]: Without dead ends: 45 [2018-07-24 10:54:10,724 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-07-24 10:54:10,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-24 10:54:10,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2018-07-24 10:54:10,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-07-24 10:54:10,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2018-07-24 10:54:10,737 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 19 [2018-07-24 10:54:10,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:10,738 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2018-07-24 10:54:10,738 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 10:54:10,738 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2018-07-24 10:54:10,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-24 10:54:10,739 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:10,739 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:54:10,739 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_large_const_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:10,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1678569579, now seen corresponding path program 1 times [2018-07-24 10:54:10,740 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:10,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:10,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:10,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:10,741 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:10,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:10,969 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:10,969 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:54:10,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:10,988 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:54:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:11,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:11,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:11,216 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:11,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:11,344 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:11,344 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:54:11,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:11,361 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:54:11,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:11,385 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:11,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:11,421 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:11,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:11,429 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:54:11,430 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7] total 13 [2018-07-24 10:54:11,430 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:54:11,430 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 10:54:11,430 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 10:54:11,431 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2018-07-24 10:54:11,431 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 8 states. [2018-07-24 10:54:11,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:11,616 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2018-07-24 10:54:11,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 10:54:11,617 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-07-24 10:54:11,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:11,621 INFO L225 Difference]: With dead ends: 59 [2018-07-24 10:54:11,621 INFO L226 Difference]: Without dead ends: 57 [2018-07-24 10:54:11,622 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-07-24 10:54:11,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-24 10:54:11,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 43. [2018-07-24 10:54:11,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-24 10:54:11,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-07-24 10:54:11,631 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 20 [2018-07-24 10:54:11,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:11,631 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-07-24 10:54:11,631 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 10:54:11,631 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-07-24 10:54:11,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-24 10:54:11,632 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:11,633 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:54:11,633 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_large_const_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:11,633 INFO L82 PathProgramCache]: Analyzing trace with hash -2071596589, now seen corresponding path program 1 times [2018-07-24 10:54:11,633 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:11,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:11,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:11,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:11,635 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:11,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:11,712 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:11,712 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:54:11,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:11,721 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:54:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:11,736 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:11,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:11,812 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:11,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:11,934 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:11,934 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:54:11,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:11,951 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:54:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:11,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:12,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:12,076 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:12,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:12,091 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:54:12,091 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7] total 13 [2018-07-24 10:54:12,091 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:54:12,092 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 10:54:12,092 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 10:54:12,092 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2018-07-24 10:54:12,093 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 8 states. [2018-07-24 10:54:12,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:12,262 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2018-07-24 10:54:12,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 10:54:12,263 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-07-24 10:54:12,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:12,264 INFO L225 Difference]: With dead ends: 64 [2018-07-24 10:54:12,264 INFO L226 Difference]: Without dead ends: 62 [2018-07-24 10:54:12,265 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-07-24 10:54:12,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-07-24 10:54:12,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 49. [2018-07-24 10:54:12,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-24 10:54:12,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2018-07-24 10:54:12,274 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 20 [2018-07-24 10:54:12,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:12,275 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2018-07-24 10:54:12,275 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 10:54:12,275 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2018-07-24 10:54:12,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-24 10:54:12,276 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:12,276 INFO L353 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:54:12,276 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_large_const_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:12,277 INFO L82 PathProgramCache]: Analyzing trace with hash 2027540318, now seen corresponding path program 1 times [2018-07-24 10:54:12,277 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:12,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:12,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:12,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:12,278 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:12,348 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:12,348 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:12,349 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:54:12,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:12,356 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:54:12,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:12,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:12,392 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:12,393 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:12,416 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:12,436 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 10:54:12,436 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2018-07-24 10:54:12,437 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:54:12,437 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 10:54:12,438 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 10:54:12,438 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-07-24 10:54:12,438 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand 5 states. [2018-07-24 10:54:12,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:12,465 INFO L93 Difference]: Finished difference Result 73 states and 89 transitions. [2018-07-24 10:54:12,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 10:54:12,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-07-24 10:54:12,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:12,471 INFO L225 Difference]: With dead ends: 73 [2018-07-24 10:54:12,471 INFO L226 Difference]: Without dead ends: 35 [2018-07-24 10:54:12,472 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-07-24 10:54:12,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-24 10:54:12,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2018-07-24 10:54:12,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-24 10:54:12,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-07-24 10:54:12,478 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 24 [2018-07-24 10:54:12,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:12,479 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-07-24 10:54:12,479 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 10:54:12,479 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-07-24 10:54:12,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-07-24 10:54:12,482 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:12,482 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:54:12,482 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_large_const_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:12,482 INFO L82 PathProgramCache]: Analyzing trace with hash 539091162, now seen corresponding path program 1 times [2018-07-24 10:54:12,482 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:12,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:12,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:12,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:12,483 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:12,676 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 10:54:12,676 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 10:54:12,676 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:54:12,676 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 10:54:12,677 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 10:54:12,677 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 10:54:12,677 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 5 states. [2018-07-24 10:54:12,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:12,891 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2018-07-24 10:54:12,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 10:54:12,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-07-24 10:54:12,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:12,893 INFO L225 Difference]: With dead ends: 34 [2018-07-24 10:54:12,893 INFO L226 Difference]: Without dead ends: 0 [2018-07-24 10:54:12,894 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-24 10:54:12,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-24 10:54:12,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-24 10:54:12,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-24 10:54:12,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-24 10:54:12,896 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-07-24 10:54:12,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:12,896 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-24 10:54:12,896 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 10:54:12,896 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-24 10:54:12,896 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-24 10:54:12,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-24 10:54:13,187 WARN L169 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 29 [2018-07-24 10:54:13,415 WARN L169 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2018-07-24 10:54:13,418 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-07-24 10:54:13,419 INFO L424 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-07-24 10:54:13,419 INFO L424 ceAbstractionStarter]: At program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_large_const_true_unreach_call_true_termination_i____VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-07-24 10:54:13,419 INFO L421 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-07-24 10:54:13,419 INFO L421 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-07-24 10:54:13,419 INFO L421 ceAbstractionStarter]: For program point L4''(lines 3 8) no Hoare annotation was computed. [2018-07-24 10:54:13,419 INFO L421 ceAbstractionStarter]: For program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_large_const_true_unreach_call_true_termination_i____VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-07-24 10:54:13,419 INFO L421 ceAbstractionStarter]: For program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_large_const_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-07-24 10:54:13,419 INFO L424 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-07-24 10:54:13,419 INFO L424 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-07-24 10:54:13,420 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-07-24 10:54:13,420 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-07-24 10:54:13,420 INFO L421 ceAbstractionStarter]: For program point L20(lines 20 30) no Hoare annotation was computed. [2018-07-24 10:54:13,420 INFO L421 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-07-24 10:54:13,420 INFO L417 ceAbstractionStarter]: At program point L32''(lines 32 36) the Hoare annotation is: (let ((.cse1 (<= 10000 main_~c3~0)) (.cse2 (<= 2000 main_~c2~0)) (.cse3 (<= 4000 main_~c1~0)) (.cse0 (<= 1 main_~i~0)) (.cse4 (<= main_~n~0 1)) (.cse5 (<= main_~n~0 main_~j~0))) (or (and .cse0 (and .cse1 (and .cse2 .cse3 (<= 2000 main_~k~0))) .cse4 (<= main_~n~0 (+ main_~j~0 1))) (and (<= main_~n~0 0) (<= main_~i~0 0) .cse5) (and .cse1 .cse2 .cse3 .cse0 .cse4 .cse5))) [2018-07-24 10:54:13,420 INFO L421 ceAbstractionStarter]: For program point L24(lines 24 29) no Hoare annotation was computed. [2018-07-24 10:54:13,420 INFO L421 ceAbstractionStarter]: For program point L26(lines 26 29) no Hoare annotation was computed. [2018-07-24 10:54:13,421 INFO L421 ceAbstractionStarter]: For program point L33'(line 33) no Hoare annotation was computed. [2018-07-24 10:54:13,421 INFO L421 ceAbstractionStarter]: For program point mainFINAL(lines 10 38) no Hoare annotation was computed. [2018-07-24 10:54:13,421 INFO L421 ceAbstractionStarter]: For program point L32(lines 32 36) no Hoare annotation was computed. [2018-07-24 10:54:13,421 INFO L421 ceAbstractionStarter]: For program point L32'''(lines 32 36) no Hoare annotation was computed. [2018-07-24 10:54:13,421 INFO L421 ceAbstractionStarter]: For program point L20''(lines 20 30) no Hoare annotation was computed. [2018-07-24 10:54:13,421 INFO L417 ceAbstractionStarter]: At program point L33(line 33) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 2000 main_~c2~0) (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (<= main_~n~0 1) (<= main_~n~0 (+ main_~j~0 1))) [2018-07-24 10:54:13,421 INFO L421 ceAbstractionStarter]: For program point mainEXIT(lines 10 38) no Hoare annotation was computed. [2018-07-24 10:54:13,422 INFO L424 ceAbstractionStarter]: At program point mainENTRY(lines 10 38) the Hoare annotation is: true [2018-07-24 10:54:13,422 INFO L421 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-07-24 10:54:13,422 INFO L417 ceAbstractionStarter]: At program point L26''(lines 20 30) the Hoare annotation is: (let ((.cse0 (<= 10000 main_~c3~0)) (.cse1 (<= 2000 main_~c2~0)) (.cse2 (<= 4000 main_~c1~0))) (or (and (and .cse0 .cse1 .cse2 (<= 1 main_~i~0) (<= 2000 main_~k~0)) (<= main_~n~0 1)) (and .cse0 .cse1 .cse2 (<= 0 main_~i~0) (<= 0 main_~k~0) (<= main_~i~0 0)))) [2018-07-24 10:54:13,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 10:54:13 BoogieIcfgContainer [2018-07-24 10:54:13,436 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 10:54:13,437 INFO L168 Benchmark]: Toolchain (without parser) took 5565.16 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.7 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -485.0 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-07-24 10:54:13,439 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. [2018-07-24 10:54:13,440 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.92 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. [2018-07-24 10:54:13,440 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.85 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. [2018-07-24 10:54:13,441 INFO L168 Benchmark]: Boogie Preprocessor took 30.28 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. [2018-07-24 10:54:13,442 INFO L168 Benchmark]: RCFGBuilder took 699.73 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -775.6 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2018-07-24 10:54:13,443 INFO L168 Benchmark]: TraceAbstraction took 4522.14 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 280.0 MB). Peak memory consumption was 280.0 MB. Max. memory is 7.1 GB. [2018-07-24 10:54:13,452 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 283.92 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 23.85 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 30.28 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 699.73 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -775.6 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4522.14 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 280.0 MB). Peak memory consumption was 280.0 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: 32]: Loop Invariant Derived loop invariant: ((((1 <= i && 10000 <= c3 && (2000 <= c2 && 4000 <= c1) && 2000 <= k) && n <= 1) && n <= j + 1) || ((n <= 0 && i <= 0) && n <= j)) || (((((10000 <= c3 && 2000 <= c2) && 4000 <= c1) && 1 <= i) && n <= 1) && n <= j) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (((((10000 <= c3 && 2000 <= c2) && 4000 <= c1) && 1 <= i) && 2000 <= k) && n <= 1) || (((((10000 <= c3 && 2000 <= c2) && 4000 <= c1) && 0 <= i) && 0 <= k) && i <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. SAFE Result, 4.4s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 190 SDtfs, 157 SDslu, 408 SDs, 0 SdLazy, 209 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 325 GetRequests, 264 SyntacticMatches, 8 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 40 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 13 PreInvPairs, 19 NumberOfFragments, 127 HoareAnnotationTreeSize, 13 FomulaSimplifications, 127 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 101 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 281 NumberOfCodeBlocks, 281 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 402 ConstructedInterpolants, 0 QuantifiedInterpolants, 21382 SizeOfPredicates, 20 NumberOfNonLiveVariables, 479 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 21 InterpolantComputations, 4 PerfectInterpolantSequences, 27/61 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/large_const_true-unreach-call_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_10-54-13-472.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/large_const_true-unreach-call_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_10-54-13-472.csv Received shutdown request...