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/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf -i ../../../trunk/examples/svcomp/loop-lit/cggmp2005_true-unreach-call_true-termination.c.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 18:17:13,197 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 18:17:13,199 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 18:17:13,211 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 18:17:13,211 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 18:17:13,212 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 18:17:13,213 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 18:17:13,215 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 18:17:13,217 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 18:17:13,218 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 18:17:13,219 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 18:17:13,219 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 18:17:13,220 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 18:17:13,221 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 18:17:13,224 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 18:17:13,230 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 18:17:13,231 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 18:17:13,236 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 18:17:13,240 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 18:17:13,242 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 18:17:13,243 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 18:17:13,246 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 18:17:13,249 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-23 18:17:13,264 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf [2018-07-23 18:17:13,287 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 18:17:13,287 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 18:17:13,288 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 18:17:13,288 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 18:17:13,289 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 18:17:13,289 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 18:17:13,289 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 18:17:13,292 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 18:17:13,292 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 18:17:13,292 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 18:17:13,292 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 18:17:13,293 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 18:17:13,293 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 18:17:13,294 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 18:17:13,294 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 18:17:13,294 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 18:17:13,294 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 18:17:13,296 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 18:17:13,296 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 18:17:13,296 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 18:17:13,296 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 18:17:13,297 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 18:17:13,297 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 18:17:13,297 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 18:17:13,297 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 18:17:13,298 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 18:17:13,298 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 18:17:13,298 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 18:17:13,298 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 18:17:13,298 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 18:17:13,299 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 18:17:13,299 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 18:17:13,299 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 18:17:13,363 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 18:17:13,378 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 18:17:13,383 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 18:17:13,385 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 18:17:13,385 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 18:17:13,386 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005_true-unreach-call_true-termination.c.i [2018-07-23 18:17:13,745 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/645ee7f3f/138bca4770e74c72aa141a22cecbebcd/FLAGc8aedf6c0 [2018-07-23 18:17:13,896 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 18:17:13,897 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005_true-unreach-call_true-termination.c.i [2018-07-23 18:17:13,904 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/645ee7f3f/138bca4770e74c72aa141a22cecbebcd/FLAGc8aedf6c0 [2018-07-23 18:17:13,918 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/645ee7f3f/138bca4770e74c72aa141a22cecbebcd [2018-07-23 18:17:13,929 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 18:17:13,930 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 18:17:13,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 18:17:13,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 18:17:13,938 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 18:17:13,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 06:17:13" (1/1) ... [2018-07-23 18:17:13,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cde9ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:17:13, skipping insertion in model container [2018-07-23 18:17:13,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 06:17:13" (1/1) ... [2018-07-23 18:17:14,098 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 18:17:14,131 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 18:17:14,148 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 18:17:14,152 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 18:17:14,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:17:14 WrapperNode [2018-07-23 18:17:14,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 18:17:14,168 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 18:17:14,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 18:17:14,169 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 18:17:14,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:17:14" (1/1) ... [2018-07-23 18:17:14,184 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:17:14" (1/1) ... [2018-07-23 18:17:14,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 18:17:14,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 18:17:14,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 18:17:14,191 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 18:17:14,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:17:14" (1/1) ... [2018-07-23 18:17:14,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:17:14" (1/1) ... [2018-07-23 18:17:14,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:17:14" (1/1) ... [2018-07-23 18:17:14,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:17:14" (1/1) ... [2018-07-23 18:17:14,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:17:14" (1/1) ... [2018-07-23 18:17:14,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:17:14" (1/1) ... [2018-07-23 18:17:14,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:17:14" (1/1) ... [2018-07-23 18:17:14,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 18:17:14,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 18:17:14,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 18:17:14,215 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 18:17:14,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:17:14" (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 [2018-07-23 18:17:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 18:17:14,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 18:17:14,287 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_lit_cggmp_____true_unreach_call_true_termination_c_i____VERIFIER_assert [2018-07-23 18:17:14,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_lit_cggmp_____true_unreach_call_true_termination_c_i____VERIFIER_assert [2018-07-23 18:17:14,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 18:17:14,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 18:17:14,288 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 18:17:14,288 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 18:17:14,734 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 18:17:14,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 06:17:14 BoogieIcfgContainer [2018-07-23 18:17:14,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 18:17:14,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 18:17:14,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 18:17:14,740 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 18:17:14,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 06:17:13" (1/3) ... [2018-07-23 18:17:14,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45abaeaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 06:17:14, skipping insertion in model container [2018-07-23 18:17:14,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:17:14" (2/3) ... [2018-07-23 18:17:14,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45abaeaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 06:17:14, skipping insertion in model container [2018-07-23 18:17:14,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 06:17:14" (3/3) ... [2018-07-23 18:17:14,744 INFO L112 eAbstractionObserver]: Analyzing ICFG cggmp2005_true-unreach-call_true-termination.c.i [2018-07-23 18:17:14,754 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 18:17:14,764 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 18:17:14,814 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 18:17:14,815 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 18:17:14,815 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 18:17:14,815 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 18:17:14,816 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 18:17:14,816 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 18:17:14,816 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 18:17:14,816 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 18:17:14,816 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 18:17:14,835 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-07-23 18:17:14,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-23 18:17:14,840 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:17:14,841 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:17:14,842 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_lit_cggmp_____true_unreach_call_true_termination_c_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:17:14,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1546450035, now seen corresponding path program 1 times [2018-07-23 18:17:14,850 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:17:14,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:17:14,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:17:14,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:17:14,905 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:17:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:17:14,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:17:14,967 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 18:17:14,967 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 18:17:14,968 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:17:14,972 INFO L450 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-07-23 18:17:14,986 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-07-23 18:17:14,987 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-07-23 18:17:14,989 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-07-23 18:17:15,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:17:15,008 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-07-23 18:17:15,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-07-23 18:17:15,010 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-07-23 18:17:15,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:17:15,019 INFO L225 Difference]: With dead ends: 31 [2018-07-23 18:17:15,020 INFO L226 Difference]: Without dead ends: 12 [2018-07-23 18:17:15,023 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 [2018-07-23 18:17:15,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-07-23 18:17:15,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-07-23 18:17:15,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-07-23 18:17:15,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-07-23 18:17:15,064 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-07-23 18:17:15,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:17:15,064 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-07-23 18:17:15,064 INFO L472 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-07-23 18:17:15,065 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-07-23 18:17:15,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-23 18:17:15,065 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:17:15,066 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:17:15,066 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_lit_cggmp_____true_unreach_call_true_termination_c_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:17:15,066 INFO L82 PathProgramCache]: Analyzing trace with hash -935310064, now seen corresponding path program 1 times [2018-07-23 18:17:15,067 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:17:15,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:17:15,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:17:15,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:17:15,068 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:17:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:17:15,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:17:15,154 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 18:17:15,154 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 18:17:15,154 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:17:15,156 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 18:17:15,157 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 18:17:15,157 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 18:17:15,158 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-07-23 18:17:15,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:17:15,215 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-07-23 18:17:15,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 18:17:15,215 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-07-23 18:17:15,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:17:15,216 INFO L225 Difference]: With dead ends: 19 [2018-07-23 18:17:15,216 INFO L226 Difference]: Without dead ends: 14 [2018-07-23 18:17:15,217 INFO L573 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 [2018-07-23 18:17:15,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-07-23 18:17:15,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-07-23 18:17:15,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-07-23 18:17:15,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-07-23 18:17:15,222 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-07-23 18:17:15,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:17:15,222 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-07-23 18:17:15,222 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 18:17:15,229 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-07-23 18:17:15,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-23 18:17:15,229 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:17:15,230 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:17:15,230 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_lit_cggmp_____true_unreach_call_true_termination_c_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:17:15,230 INFO L82 PathProgramCache]: Analyzing trace with hash 124771254, now seen corresponding path program 1 times [2018-07-23 18:17:15,230 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:17:15,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:17:15,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:17:15,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:17:15,232 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:17:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:17:15,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:17:15,302 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:17:15,302 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:17:15,303 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 14 with the following transitions: [2018-07-23 18:17:15,306 INFO L201 CegarAbsIntRunner]: [0], [1], [4], [6], [15], [19], [23], [25], [32], [33], [34], [36] [2018-07-23 18:17:15,344 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 18:17:15,345 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 18:17:15,486 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-07-23 18:17:15,488 INFO L272 AbstractInterpreter]: Visited 12 different actions 38 times. Merged at 3 different actions 14 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 2 variables. [2018-07-23 18:17:15,522 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-07-23 18:17:15,523 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:17:15,523 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 [2018-07-23 18:17:15,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:17:15,533 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-23 18:17:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:17:15,572 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:17:15,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:17:15,667 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:17:15,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:17:15,763 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:17:15,764 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 [2018-07-23 18:17:15,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:17:15,780 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-23 18:17:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:17:15,797 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:17:15,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:17:15,804 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:17:15,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:17:15,835 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-23 18:17:15,835 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4] total 8 [2018-07-23 18:17:15,835 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-23 18:17:15,836 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 18:17:15,836 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 18:17:15,836 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2018-07-23 18:17:15,837 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 6 states. [2018-07-23 18:17:15,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:17:15,893 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-07-23 18:17:15,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 18:17:15,895 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-07-23 18:17:15,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:17:15,897 INFO L225 Difference]: With dead ends: 21 [2018-07-23 18:17:15,897 INFO L226 Difference]: Without dead ends: 16 [2018-07-23 18:17:15,898 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2018-07-23 18:17:15,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-07-23 18:17:15,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-07-23 18:17:15,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-07-23 18:17:15,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-07-23 18:17:15,904 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-07-23 18:17:15,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:17:15,905 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-07-23 18:17:15,905 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 18:17:15,906 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-07-23 18:17:15,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-23 18:17:15,906 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:17:15,906 INFO L353 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:17:15,907 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_lit_cggmp_____true_unreach_call_true_termination_c_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:17:15,907 INFO L82 PathProgramCache]: Analyzing trace with hash 955668700, now seen corresponding path program 2 times [2018-07-23 18:17:15,907 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:17:15,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:17:15,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:17:15,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:17:15,910 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:17:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:17:16,018 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:17:16,019 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:17:16,019 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:17:16,019 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-23 18:17:16,019 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 18:17:16,019 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:17:16,020 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 [2018-07-23 18:17:16,032 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-23 18:17:16,032 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-23 18:17:16,048 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-23 18:17:16,048 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 18:17:16,050 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:17:16,373 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:17:16,374 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:17:16,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:17:16,470 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:17:16,470 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 [2018-07-23 18:17:16,486 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-23 18:17:16,487 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-23 18:17:16,505 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-23 18:17:16,505 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 18:17:16,508 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:17:16,515 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:17:16,515 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:17:16,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:17:16,568 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-23 18:17:16,569 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 9 [2018-07-23 18:17:16,569 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-23 18:17:16,569 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 18:17:16,570 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 18:17:16,570 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-07-23 18:17:16,570 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 8 states. [2018-07-23 18:17:16,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:17:16,607 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-07-23 18:17:16,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 18:17:16,609 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2018-07-23 18:17:16,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:17:16,610 INFO L225 Difference]: With dead ends: 23 [2018-07-23 18:17:16,610 INFO L226 Difference]: Without dead ends: 18 [2018-07-23 18:17:16,611 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-07-23 18:17:16,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-07-23 18:17:16,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-07-23 18:17:16,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-07-23 18:17:16,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-07-23 18:17:16,617 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-07-23 18:17:16,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:17:16,617 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-07-23 18:17:16,617 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 18:17:16,617 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-07-23 18:17:16,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-23 18:17:16,618 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:17:16,618 INFO L353 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:17:16,619 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_lit_cggmp_____true_unreach_call_true_termination_c_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:17:16,619 INFO L82 PathProgramCache]: Analyzing trace with hash 584197250, now seen corresponding path program 3 times [2018-07-23 18:17:16,619 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:17:16,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:17:16,620 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-23 18:17:16,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:17:16,621 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:17:16,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:17:16,764 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:17:16,764 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:17:16,764 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:17:16,765 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-23 18:17:16,765 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 18:17:16,765 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:17:16,765 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 [2018-07-23 18:17:16,780 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-07-23 18:17:16,780 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-07-23 18:17:16,837 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-07-23 18:17:16,838 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 18:17:16,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:17:16,957 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:17:16,957 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:17:17,040 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:17:17,061 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:17:17,061 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 [2018-07-23 18:17:17,077 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-07-23 18:17:17,077 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-07-23 18:17:17,101 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-07-23 18:17:17,101 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 18:17:17,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:17:17,122 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:17:17,123 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:17:17,170 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:17:17,178 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-23 18:17:17,179 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6] total 10 [2018-07-23 18:17:17,179 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-23 18:17:17,179 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 18:17:17,180 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 18:17:17,180 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-07-23 18:17:17,180 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 10 states. [2018-07-23 18:17:17,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:17:17,223 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-07-23 18:17:17,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 18:17:17,223 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-07-23 18:17:17,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:17:17,224 INFO L225 Difference]: With dead ends: 25 [2018-07-23 18:17:17,224 INFO L226 Difference]: Without dead ends: 20 [2018-07-23 18:17:17,225 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-07-23 18:17:17,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-07-23 18:17:17,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-07-23 18:17:17,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-07-23 18:17:17,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-07-23 18:17:17,230 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2018-07-23 18:17:17,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:17:17,230 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-07-23 18:17:17,230 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 18:17:17,230 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-07-23 18:17:17,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-07-23 18:17:17,231 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:17:17,231 INFO L353 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:17:17,231 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_lit_cggmp_____true_unreach_call_true_termination_c_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:17:17,232 INFO L82 PathProgramCache]: Analyzing trace with hash 82419368, now seen corresponding path program 4 times [2018-07-23 18:17:17,232 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:17:17,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:17:17,233 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-23 18:17:17,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:17:17,233 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:17:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:17:17,665 WARN L169 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-07-23 18:17:17,693 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:17:17,694 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:17:17,694 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:17:17,694 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-23 18:17:17,695 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 18:17:17,695 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:17:17,695 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 [2018-07-23 18:17:17,708 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-07-23 18:17:17,708 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-07-23 18:17:17,725 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-07-23 18:17:17,726 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 18:17:17,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:17:17,800 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:17:17,800 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:17:17,965 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:17:17,987 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:17:17,987 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 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-23 18:17:18,002 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-07-23 18:17:18,003 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-07-23 18:17:18,017 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-07-23 18:17:18,018 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 18:17:18,021 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:17:18,067 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:17:18,067 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:17:18,110 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:17:18,111 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-23 18:17:18,111 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9] total 11 [2018-07-23 18:17:18,112 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-23 18:17:18,112 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 18:17:18,112 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 18:17:18,112 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2018-07-23 18:17:18,113 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 9 states. [2018-07-23 18:17:18,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:17:18,218 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-07-23 18:17:18,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-23 18:17:18,219 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2018-07-23 18:17:18,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:17:18,221 INFO L225 Difference]: With dead ends: 27 [2018-07-23 18:17:18,221 INFO L226 Difference]: Without dead ends: 22 [2018-07-23 18:17:18,222 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 68 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-07-23 18:17:18,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-07-23 18:17:18,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-07-23 18:17:18,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-07-23 18:17:18,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-07-23 18:17:18,227 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2018-07-23 18:17:18,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:17:18,227 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-07-23 18:17:18,227 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 18:17:18,227 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-07-23 18:17:18,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-23 18:17:18,228 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:17:18,228 INFO L353 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:17:18,228 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_lit_cggmp_____true_unreach_call_true_termination_c_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:17:18,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1089788082, now seen corresponding path program 5 times [2018-07-23 18:17:18,229 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:17:18,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:17:18,230 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-23 18:17:18,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:17:18,230 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:17:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:17:18,316 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:17:18,316 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 18:17:18,316 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 18:17:18,317 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:17:18,317 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 18:17:18,317 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 18:17:18,317 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-23 18:17:18,318 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 7 states. [2018-07-23 18:17:18,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:17:18,340 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-07-23 18:17:18,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 18:17:18,344 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-07-23 18:17:18,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:17:18,345 INFO L225 Difference]: With dead ends: 22 [2018-07-23 18:17:18,345 INFO L226 Difference]: Without dead ends: 0 [2018-07-23 18:17:18,346 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-23 18:17:18,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-23 18:17:18,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-23 18:17:18,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-23 18:17:18,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-23 18:17:18,347 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-07-23 18:17:18,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:17:18,347 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-23 18:17:18,347 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 18:17:18,347 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-23 18:17:18,348 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-23 18:17:18,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-23 18:17:18,566 WARN L169 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2018-07-23 18:17:18,570 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-07-23 18:17:18,570 INFO L424 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-07-23 18:17:18,570 INFO L424 ceAbstractionStarter]: At program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_lit_cggmp_____true_unreach_call_true_termination_c_i____VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-07-23 18:17:18,570 INFO L421 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-07-23 18:17:18,571 INFO L421 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-07-23 18:17:18,571 INFO L421 ceAbstractionStarter]: For program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_lit_cggmp_____true_unreach_call_true_termination_c_i____VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-07-23 18:17:18,571 INFO L421 ceAbstractionStarter]: For program point L4''(lines 3 8) no Hoare annotation was computed. [2018-07-23 18:17:18,571 INFO L421 ceAbstractionStarter]: For program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_lit_cggmp_____true_unreach_call_true_termination_c_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-07-23 18:17:18,571 INFO L424 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-07-23 18:17:18,571 INFO L424 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-07-23 18:17:18,571 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-07-23 18:17:18,572 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-07-23 18:17:18,572 INFO L417 ceAbstractionStarter]: At program point L14'''(lines 14 17) the Hoare annotation is: (and (<= 6 main_~j~0) (<= main_~j~0 6)) [2018-07-23 18:17:18,572 INFO L421 ceAbstractionStarter]: For program point mainFINAL(lines 10 20) no Hoare annotation was computed. [2018-07-23 18:17:18,572 INFO L417 ceAbstractionStarter]: At program point L14''(lines 14 17) the Hoare annotation is: (or (and (<= 8 main_~j~0) (<= main_~j~0 (+ main_~i~0 3)) (<= main_~i~0 5)) (and (<= 6 main_~j~0) (<= (+ main_~j~0 3) main_~i~0) (<= main_~j~0 6)) (and (<= main_~j~0 (+ main_~i~0 9)) (<= main_~i~0 1) (<= 10 main_~j~0)) (and (<= 7 main_~j~0) (<= main_~j~0 main_~i~0) (<= main_~i~0 7)) (and (<= main_~i~0 3) (<= main_~j~0 (+ main_~i~0 6)) (<= 9 main_~j~0))) [2018-07-23 18:17:18,572 INFO L421 ceAbstractionStarter]: For program point L14(lines 14 17) no Hoare annotation was computed. [2018-07-23 18:17:18,573 INFO L421 ceAbstractionStarter]: For program point mainEXIT(lines 10 20) no Hoare annotation was computed. [2018-07-23 18:17:18,573 INFO L424 ceAbstractionStarter]: At program point mainENTRY(lines 10 20) the Hoare annotation is: true [2018-07-23 18:17:18,573 INFO L421 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-07-23 18:17:18,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 06:17:18 BoogieIcfgContainer [2018-07-23 18:17:18,587 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 18:17:18,588 INFO L168 Benchmark]: Toolchain (without parser) took 4658.19 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 773.8 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -574.1 MB). Peak memory consumption was 199.7 MB. Max. memory is 7.1 GB. [2018-07-23 18:17:18,589 INFO L168 Benchmark]: CDTParser took 0.25 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. [2018-07-23 18:17:18,590 INFO L168 Benchmark]: CACSL2BoogieTranslator took 236.74 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. [2018-07-23 18:17:18,591 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.92 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. [2018-07-23 18:17:18,591 INFO L168 Benchmark]: Boogie Preprocessor took 24.14 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. [2018-07-23 18:17:18,592 INFO L168 Benchmark]: RCFGBuilder took 520.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 773.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -824.9 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-07-23 18:17:18,593 INFO L168 Benchmark]: TraceAbstraction took 3850.78 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: 240.2 MB). Peak memory consumption was 240.2 MB. Max. memory is 7.1 GB. [2018-07-23 18:17:18,598 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 236.74 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 21.92 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 24.14 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 520.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 773.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -824.9 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3850.78 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: 240.2 MB). Peak memory consumption was 240.2 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: 14]: Loop Invariant Derived loop invariant: (((((8 <= j && j <= i + 3) && i <= 5) || ((6 <= j && j + 3 <= i) && j <= 6)) || ((j <= i + 9 && i <= 1) && 10 <= j)) || ((7 <= j && j <= i) && i <= 7)) || ((i <= 3 && j <= i + 6) && 9 <= j) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 3.7s OverallTime, 7 OverallIterations, 6 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 86 SDtfs, 1 SDslu, 206 SDs, 0 SdLazy, 98 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 285 GetRequests, 232 SyntacticMatches, 16 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 13 PreInvPairs, 19 NumberOfFragments, 71 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 234 NumberOfCodeBlocks, 234 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 339 ConstructedInterpolants, 0 QuantifiedInterpolants, 18193 SizeOfPredicates, 16 NumberOfNonLiveVariables, 320 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 23 InterpolantComputations, 3 PerfectInterpolantSequences, 30/230 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/cggmp2005_true-unreach-call_true-termination.c.i_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-23_18-17-18-614.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/cggmp2005_true-unreach-call_true-termination.c.i_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_18-17-18-614.csv Received shutdown request...