java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-lit/cggmp2005_variant_true-unreach-call_true-termination.c.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 17:20:21,036 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 17:20:21,039 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 17:20:21,053 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 17:20:21,054 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 17:20:21,055 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 17:20:21,057 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 17:20:21,059 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 17:20:21,061 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 17:20:21,062 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 17:20:21,063 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 17:20:21,063 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 17:20:21,064 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 17:20:21,065 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 17:20:21,066 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 17:20:21,067 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 17:20:21,068 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 17:20:21,070 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 17:20:21,072 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 17:20:21,074 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 17:20:21,075 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 17:20:21,076 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 17:20:21,078 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-15 17:20:21,093 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf [2018-09-15 17:20:21,121 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 17:20:21,122 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 17:20:21,122 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 17:20:21,123 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 17:20:21,123 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 17:20:21,123 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 17:20:21,123 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-15 17:20:21,123 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 17:20:21,124 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-15 17:20:21,124 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 17:20:21,124 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 17:20:21,124 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-15 17:20:21,125 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 17:20:21,125 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 17:20:21,125 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 17:20:21,126 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 17:20:21,126 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 17:20:21,126 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 17:20:21,126 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 17:20:21,126 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 17:20:21,127 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 17:20:21,127 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 17:20:21,127 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 17:20:21,127 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 17:20:21,127 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 17:20:21,128 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 17:20:21,128 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 17:20:21,128 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 17:20:21,128 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 17:20:21,129 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 17:20:21,129 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 17:20:21,129 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 17:20:21,129 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 17:20:21,129 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 17:20:21,186 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 17:20:21,202 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 17:20:21,209 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 17:20:21,210 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 17:20:21,211 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 17:20:21,212 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005_variant_true-unreach-call_true-termination.c.i [2018-09-15 17:20:21,558 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64c5a2b28/cc7bd2ac9c494991a7dfe29348850d37/FLAG2def8901b [2018-09-15 17:20:21,730 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 17:20:21,731 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005_variant_true-unreach-call_true-termination.c.i [2018-09-15 17:20:21,740 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64c5a2b28/cc7bd2ac9c494991a7dfe29348850d37/FLAG2def8901b [2018-09-15 17:20:21,766 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64c5a2b28/cc7bd2ac9c494991a7dfe29348850d37 [2018-09-15 17:20:21,780 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 17:20:21,786 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 17:20:21,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 17:20:21,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 17:20:21,795 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 17:20:21,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 05:20:21" (1/1) ... [2018-09-15 17:20:21,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c4d8d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:21, skipping insertion in model container [2018-09-15 17:20:21,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 05:20:21" (1/1) ... [2018-09-15 17:20:21,810 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 17:20:22,058 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 17:20:22,077 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 17:20:22,085 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 17:20:22,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:22 WrapperNode [2018-09-15 17:20:22,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 17:20:22,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 17:20:22,104 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 17:20:22,104 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 17:20:22,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:22" (1/1) ... [2018-09-15 17:20:22,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:22" (1/1) ... [2018-09-15 17:20:22,129 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 17:20:22,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 17:20:22,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 17:20:22,129 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 17:20:22,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:22" (1/1) ... [2018-09-15 17:20:22,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:22" (1/1) ... [2018-09-15 17:20:22,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:22" (1/1) ... [2018-09-15 17:20:22,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:22" (1/1) ... [2018-09-15 17:20:22,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:22" (1/1) ... [2018-09-15 17:20:22,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:22" (1/1) ... [2018-09-15 17:20:22,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:22" (1/1) ... [2018-09-15 17:20:22,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 17:20:22,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 17:20:22,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 17:20:22,160 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 17:20:22,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:22" (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 [2018-09-15 17:20:22,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 17:20:22,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 17:20:22,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 17:20:22,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 17:20:22,238 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 17:20:22,238 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 17:20:22,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-15 17:20:22,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-15 17:20:22,521 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 17:20:22,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 05:20:22 BoogieIcfgContainer [2018-09-15 17:20:22,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 17:20:22,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 17:20:22,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 17:20:22,536 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 17:20:22,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 05:20:21" (1/3) ... [2018-09-15 17:20:22,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13789f04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 05:20:22, skipping insertion in model container [2018-09-15 17:20:22,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:22" (2/3) ... [2018-09-15 17:20:22,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13789f04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 05:20:22, skipping insertion in model container [2018-09-15 17:20:22,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 05:20:22" (3/3) ... [2018-09-15 17:20:22,546 INFO L112 eAbstractionObserver]: Analyzing ICFG cggmp2005_variant_true-unreach-call_true-termination.c.i [2018-09-15 17:20:22,580 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 17:20:22,604 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 17:20:22,660 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 17:20:22,661 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 17:20:22,661 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 17:20:22,662 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 17:20:22,662 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 17:20:22,662 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 17:20:22,662 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 17:20:22,662 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 17:20:22,663 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 17:20:22,692 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-09-15 17:20:22,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-15 17:20:22,700 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:22,701 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:22,702 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:22,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1281911547, now seen corresponding path program 1 times [2018-09-15 17:20:22,711 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:22,712 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 12 with the following transitions: [2018-09-15 17:20:22,714 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [20], [25], [28], [30], [36], [37], [38], [40] [2018-09-15 17:20:22,780 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:22,780 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:22,828 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:22,830 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 4 variables. [2018-09-15 17:20:22,856 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:22,902 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 33.33% of their original sizes. [2018-09-15 17:20:22,902 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:22,943 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:22,944 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:22,945 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-15 17:20:22,945 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:22,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-15 17:20:22,957 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-15 17:20:22,958 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-15 17:20:22,961 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2018-09-15 17:20:23,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:23,105 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2018-09-15 17:20:23,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-15 17:20:23,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-09-15 17:20:23,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:23,116 INFO L225 Difference]: With dead ends: 40 [2018-09-15 17:20:23,116 INFO L226 Difference]: Without dead ends: 16 [2018-09-15 17:20:23,119 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-09-15 17:20:23,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-09-15 17:20:23,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2018-09-15 17:20:23,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-09-15 17:20:23,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-09-15 17:20:23,155 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-09-15 17:20:23,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:23,156 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-09-15 17:20:23,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-15 17:20:23,156 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-09-15 17:20:23,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-15 17:20:23,157 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:23,157 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:23,158 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:23,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1335306055, now seen corresponding path program 1 times [2018-09-15 17:20:23,159 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:23,159 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 13 with the following transitions: [2018-09-15 17:20:23,160 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [25], [28], [30], [36], [37], [38], [40] [2018-09-15 17:20:23,161 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:23,162 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:23,166 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:23,166 INFO L272 AbstractInterpreter]: Visited 8 different actions 8 times. Never merged. Never widened. Never found a fixpoint. Largest state had 4 variables. [2018-09-15 17:20:23,192 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:23,211 INFO L224 lantSequenceWeakener]: Could never weaken! [2018-09-15 17:20:23,212 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:23,262 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:23,263 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:23,263 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-15 17:20:23,263 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:23,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-15 17:20:23,264 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-15 17:20:23,264 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-15 17:20:23,265 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2018-09-15 17:20:23,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:23,340 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-09-15 17:20:23,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-15 17:20:23,341 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-09-15 17:20:23,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:23,342 INFO L225 Difference]: With dead ends: 20 [2018-09-15 17:20:23,342 INFO L226 Difference]: Without dead ends: 15 [2018-09-15 17:20:23,346 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-15 17:20:23,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-09-15 17:20:23,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-09-15 17:20:23,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-09-15 17:20:23,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-09-15 17:20:23,354 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-09-15 17:20:23,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:23,354 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-09-15 17:20:23,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-15 17:20:23,354 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-09-15 17:20:23,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-15 17:20:23,355 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:23,355 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:23,358 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:23,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1931535679, now seen corresponding path program 1 times [2018-09-15 17:20:23,359 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:23,359 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-09-15 17:20:23,359 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [25], [28], [30], [36], [37], [38], [40] [2018-09-15 17:20:23,362 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:23,362 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:23,431 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-15 17:20:23,432 INFO L272 AbstractInterpreter]: Visited 13 different actions 65 times. Merged at 3 different actions 23 times. Widened at 1 different actions 4 times. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2018-09-15 17:20:23,460 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-15 17:20:23,475 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-15 17:20:23,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 05:20:23 BoogieIcfgContainer [2018-09-15 17:20:23,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-15 17:20:23,477 INFO L168 Benchmark]: Toolchain (without parser) took 1697.08 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 733.0 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -728.2 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2018-09-15 17:20:23,479 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-09-15 17:20:23,480 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.91 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. [2018-09-15 17:20:23,481 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.85 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. [2018-09-15 17:20:23,482 INFO L168 Benchmark]: Boogie Preprocessor took 24.83 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. [2018-09-15 17:20:23,482 INFO L168 Benchmark]: RCFGBuilder took 362.78 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 733.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -785.8 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2018-09-15 17:20:23,483 INFO L168 Benchmark]: TraceAbstraction took 953.38 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. [2018-09-15 17:20:23,488 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 315.91 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 24.85 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 24.83 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 362.78 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 733.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -785.8 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 953.38 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 5]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L11] int lo, mid, hi; [L12] lo = 0 [L13] mid = __VERIFIER_nondet_int() [L14] COND FALSE !(!(mid > 0 && mid <= 1000000)) [L15] hi = 2*mid [L16] COND TRUE mid > 0 [L17] lo = lo + 1 [L18] hi = hi - 1 [L19] mid = mid - 1 [L16] COND FALSE !(mid > 0) [L21] CALL __VERIFIER_assert(lo == hi) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. UNKNOWN Result, 0.8s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 31 SDtfs, 12 SDslu, 44 SDs, 0 SdLazy, 14 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9761904761904762 AbsIntWeakeningRatio, 0.5714285714285714 AbsIntAvgWeakeningVarsNumRemoved, 0.47619047619047616 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: No data available, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/cggmp2005_variant_true-unreach-call_true-termination.c.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-15_17-20-23-501.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/cggmp2005_variant_true-unreach-call_true-termination.c.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-15_17-20-23-501.csv Received shutdown request...