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-invgen/fragtest_simple_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 17:20:12,106 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 17:20:12,109 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 17:20:12,121 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 17:20:12,121 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 17:20:12,122 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 17:20:12,124 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 17:20:12,126 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 17:20:12,128 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 17:20:12,129 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 17:20:12,130 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 17:20:12,130 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 17:20:12,131 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 17:20:12,132 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 17:20:12,136 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 17:20:12,138 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 17:20:12,139 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 17:20:12,140 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 17:20:12,142 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 17:20:12,144 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 17:20:12,145 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 17:20:12,147 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 17:20:12,150 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-15 17:20:12,160 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 17:20:12,176 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 17:20:12,176 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 17:20:12,177 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 17:20:12,178 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 17:20:12,178 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 17:20:12,178 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 17:20:12,178 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-15 17:20:12,178 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 17:20:12,179 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-15 17:20:12,179 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 17:20:12,179 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 17:20:12,179 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-15 17:20:12,180 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 17:20:12,180 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 17:20:12,181 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 17:20:12,181 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 17:20:12,181 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 17:20:12,181 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 17:20:12,181 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 17:20:12,181 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 17:20:12,182 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 17:20:12,182 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 17:20:12,182 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 17:20:12,182 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 17:20:12,182 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 17:20:12,183 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 17:20:12,183 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 17:20:12,183 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 17:20:12,183 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 17:20:12,183 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 17:20:12,184 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 17:20:12,184 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 17:20:12,184 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 17:20:12,184 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 17:20:12,231 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 17:20:12,244 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 17:20:12,248 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 17:20:12,250 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 17:20:12,250 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 17:20:12,251 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/fragtest_simple_true-unreach-call_true-termination.i [2018-09-15 17:20:12,590 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb561c59f/55987c75a62f4a8ea539449aa0b6079c/FLAGc3dd3c3ef [2018-09-15 17:20:12,741 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 17:20:12,741 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/fragtest_simple_true-unreach-call_true-termination.i [2018-09-15 17:20:12,748 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb561c59f/55987c75a62f4a8ea539449aa0b6079c/FLAGc3dd3c3ef [2018-09-15 17:20:12,766 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb561c59f/55987c75a62f4a8ea539449aa0b6079c [2018-09-15 17:20:12,782 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 17:20:12,785 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 17:20:12,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 17:20:12,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 17:20:12,795 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 17:20:12,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 05:20:12" (1/1) ... [2018-09-15 17:20:12,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63fb7c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:12, skipping insertion in model container [2018-09-15 17:20:12,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 05:20:12" (1/1) ... [2018-09-15 17:20:12,813 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 17:20:13,023 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 17:20:13,042 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 17:20:13,050 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 17:20:13,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:13 WrapperNode [2018-09-15 17:20:13,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 17:20:13,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 17:20:13,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 17:20:13,066 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 17:20:13,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:13" (1/1) ... [2018-09-15 17:20:13,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:13" (1/1) ... [2018-09-15 17:20:13,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 17:20:13,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 17:20:13,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 17:20:13,092 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 17:20:13,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:13" (1/1) ... [2018-09-15 17:20:13,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:13" (1/1) ... [2018-09-15 17:20:13,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:13" (1/1) ... [2018-09-15 17:20:13,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:13" (1/1) ... [2018-09-15 17:20:13,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:13" (1/1) ... [2018-09-15 17:20:13,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:13" (1/1) ... [2018-09-15 17:20:13,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:13" (1/1) ... [2018-09-15 17:20:13,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 17:20:13,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 17:20:13,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 17:20:13,127 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 17:20:13,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:13" (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 17:20:13,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 17:20:13,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 17:20:13,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 17:20:13,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 17:20:13,215 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 17:20:13,216 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 17:20:13,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-15 17:20:13,216 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-15 17:20:13,702 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 17:20:13,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 05:20:13 BoogieIcfgContainer [2018-09-15 17:20:13,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 17:20:13,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 17:20:13,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 17:20:13,717 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 17:20:13,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 05:20:12" (1/3) ... [2018-09-15 17:20:13,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14622a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 05:20:13, skipping insertion in model container [2018-09-15 17:20:13,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:13" (2/3) ... [2018-09-15 17:20:13,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14622a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 05:20:13, skipping insertion in model container [2018-09-15 17:20:13,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 05:20:13" (3/3) ... [2018-09-15 17:20:13,733 INFO L112 eAbstractionObserver]: Analyzing ICFG fragtest_simple_true-unreach-call_true-termination.i [2018-09-15 17:20:13,749 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 17:20:13,762 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 17:20:13,817 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 17:20:13,818 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 17:20:13,818 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 17:20:13,818 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 17:20:13,818 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 17:20:13,818 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 17:20:13,818 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 17:20:13,818 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 17:20:13,818 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 17:20:13,837 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-09-15 17:20:13,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-09-15 17:20:13,843 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:13,844 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:13,845 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:13,851 INFO L82 PathProgramCache]: Analyzing trace with hash 62896836, now seen corresponding path program 1 times [2018-09-15 17:20:13,854 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:13,855 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-09-15 17:20:13,858 INFO L202 CegarAbsIntRunner]: [0], [4], [17], [21], [25], [38], [40], [44], [50], [63], [66], [68], [74], [75], [76], [78] [2018-09-15 17:20:13,912 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:13,912 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:13,957 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:13,958 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Never found a fixpoint. Largest state had 7 variables. [2018-09-15 17:20:13,971 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:14,021 INFO L224 lantSequenceWeakener]: Could never weaken! [2018-09-15 17:20:14,022 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:14,052 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:14,053 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:14,054 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-15 17:20:14,054 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:14,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-15 17:20:14,065 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-15 17:20:14,066 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-15 17:20:14,068 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 3 states. [2018-09-15 17:20:14,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:14,265 INFO L93 Difference]: Finished difference Result 65 states and 89 transitions. [2018-09-15 17:20:14,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-15 17:20:14,267 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-09-15 17:20:14,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:14,285 INFO L225 Difference]: With dead ends: 65 [2018-09-15 17:20:14,285 INFO L226 Difference]: Without dead ends: 38 [2018-09-15 17:20:14,291 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-15 17:20:14,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-09-15 17:20:14,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25. [2018-09-15 17:20:14,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-09-15 17:20:14,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2018-09-15 17:20:14,348 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2018-09-15 17:20:14,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:14,349 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-09-15 17:20:14,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-15 17:20:14,349 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2018-09-15 17:20:14,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-15 17:20:14,350 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:14,350 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:14,351 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:14,351 INFO L82 PathProgramCache]: Analyzing trace with hash -111227420, now seen corresponding path program 1 times [2018-09-15 17:20:14,352 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:14,352 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-09-15 17:20:14,352 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [10], [13], [21], [25], [29], [31], [34], [40], [44], [50], [63], [66], [68], [74], [75], [76], [78] [2018-09-15 17:20:14,355 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:14,355 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:14,393 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:14,393 INFO L272 AbstractInterpreter]: Visited 19 different actions 19 times. Never merged. Never widened. Never found a fixpoint. Largest state had 9 variables. [2018-09-15 17:20:14,430 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:14,518 INFO L232 lantSequenceWeakener]: Weakened 9 states. On average, predicates are now at 53.52% of their original sizes. [2018-09-15 17:20:14,518 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:14,854 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:14,854 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:14,854 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-15 17:20:14,855 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:14,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-15 17:20:14,856 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-15 17:20:14,856 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-09-15 17:20:14,857 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 9 states. [2018-09-15 17:20:15,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:15,537 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2018-09-15 17:20:15,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-15 17:20:15,538 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2018-09-15 17:20:15,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:15,540 INFO L225 Difference]: With dead ends: 52 [2018-09-15 17:20:15,540 INFO L226 Difference]: Without dead ends: 50 [2018-09-15 17:20:15,541 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-09-15 17:20:15,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-09-15 17:20:15,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 36. [2018-09-15 17:20:15,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-09-15 17:20:15,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-09-15 17:20:15,553 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 20 [2018-09-15 17:20:15,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:15,553 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-09-15 17:20:15,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-15 17:20:15,554 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-09-15 17:20:15,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-09-15 17:20:15,555 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:15,555 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:15,555 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:15,556 INFO L82 PathProgramCache]: Analyzing trace with hash 689567936, now seen corresponding path program 1 times [2018-09-15 17:20:15,556 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:15,556 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2018-09-15 17:20:15,557 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [10], [13], [21], [25], [29], [31], [34], [36], [40], [44], [50], [63], [66], [68], [74], [75], [76], [78] [2018-09-15 17:20:15,559 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:15,559 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:15,634 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:15,635 INFO L272 AbstractInterpreter]: Visited 20 different actions 90 times. Merged at 7 different actions 49 times. Widened at 2 different actions 6 times. Found 1 fixpoints after 1 different actions. Largest state had 9 variables. [2018-09-15 17:20:15,656 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:15,696 INFO L232 lantSequenceWeakener]: Weakened 12 states. On average, predicates are now at 47.78% of their original sizes. [2018-09-15 17:20:15,696 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:15,917 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:15,917 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:15,917 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-15 17:20:15,918 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:15,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-15 17:20:15,918 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-15 17:20:15,919 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-09-15 17:20:15,919 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 10 states. [2018-09-15 17:20:16,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:16,507 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2018-09-15 17:20:16,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-15 17:20:16,510 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2018-09-15 17:20:16,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:16,513 INFO L225 Difference]: With dead ends: 60 [2018-09-15 17:20:16,513 INFO L226 Difference]: Without dead ends: 58 [2018-09-15 17:20:16,514 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-09-15 17:20:16,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-09-15 17:20:16,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 32. [2018-09-15 17:20:16,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-09-15 17:20:16,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2018-09-15 17:20:16,525 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 23 [2018-09-15 17:20:16,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:16,526 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2018-09-15 17:20:16,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-15 17:20:16,526 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2018-09-15 17:20:16,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-09-15 17:20:16,527 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:16,527 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:16,528 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:16,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1352658359, now seen corresponding path program 1 times [2018-09-15 17:20:16,528 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:16,528 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 30 with the following transitions: [2018-09-15 17:20:16,529 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [10], [13], [21], [25], [29], [31], [34], [40], [44], [50], [52], [57], [63], [66], [68], [71], [73], [74], [75], [76], [78], [79] [2018-09-15 17:20:16,531 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:16,531 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:16,537 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:16,538 INFO L272 AbstractInterpreter]: Visited 24 different actions 24 times. Never merged. Never widened. Never found a fixpoint. Largest state had 9 variables. [2018-09-15 17:20:16,580 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:16,622 INFO L232 lantSequenceWeakener]: Weakened 17 states. On average, predicates are now at 50.1% of their original sizes. [2018-09-15 17:20:16,622 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:17,269 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:17,270 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:17,270 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-15 17:20:17,270 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:17,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-15 17:20:17,271 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-15 17:20:17,271 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-09-15 17:20:17,272 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 11 states. [2018-09-15 17:20:18,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:18,239 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2018-09-15 17:20:18,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-15 17:20:18,239 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-09-15 17:20:18,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:18,242 INFO L225 Difference]: With dead ends: 69 [2018-09-15 17:20:18,242 INFO L226 Difference]: Without dead ends: 43 [2018-09-15 17:20:18,243 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2018-09-15 17:20:18,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-15 17:20:18,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2018-09-15 17:20:18,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-09-15 17:20:18,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-09-15 17:20:18,252 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 29 [2018-09-15 17:20:18,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:18,252 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-09-15 17:20:18,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-15 17:20:18,252 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-09-15 17:20:18,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-09-15 17:20:18,254 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:18,254 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:18,254 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:18,254 INFO L82 PathProgramCache]: Analyzing trace with hash -38707475, now seen corresponding path program 1 times [2018-09-15 17:20:18,254 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:18,255 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2018-09-15 17:20:18,255 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [10], [13], [21], [25], [29], [31], [34], [36], [40], [44], [50], [52], [57], [63], [66], [68], [71], [73], [74], [75], [76], [78], [79] [2018-09-15 17:20:18,257 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:18,257 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:18,336 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-15 17:20:18,336 INFO L272 AbstractInterpreter]: Visited 26 different actions 215 times. Merged at 10 different actions 103 times. Widened at 3 different actions 14 times. Found 7 fixpoints after 2 different actions. Largest state had 9 variables. [2018-09-15 17:20:18,381 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-15 17:20:18,402 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-15 17:20:18,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 05:20:18 BoogieIcfgContainer [2018-09-15 17:20:18,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-15 17:20:18,404 INFO L168 Benchmark]: Toolchain (without parser) took 5621.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 770.7 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -629.4 MB). Peak memory consumption was 141.4 MB. Max. memory is 7.1 GB. [2018-09-15 17:20:18,410 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-15 17:20:18,411 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.20 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 17:20:18,412 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-15 17:20:18,413 INFO L168 Benchmark]: Boogie Preprocessor took 34.79 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 17:20:18,414 INFO L168 Benchmark]: RCFGBuilder took 577.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 770.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -816.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-09-15 17:20:18,415 INFO L168 Benchmark]: TraceAbstraction took 4698.37 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: 176.8 MB). Peak memory consumption was 176.8 MB. Max. memory is 7.1 GB. [2018-09-15 17:20:18,423 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 278.20 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 25.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.79 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 577.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 770.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -816.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4698.37 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: 176.8 MB). Peak memory consumption was 176.8 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 i,pvlen ; [L12] int tmp___1 ; [L13] int k = 0; [L14] int n; [L15] i = 0 [L16] pvlen = __VERIFIER_nondet_int() [L17] COND FALSE !(__VERIFIER_nondet_int() && i <= 1000000) [L20] COND TRUE i > pvlen [L21] pvlen = i [L23] i = 0 [L24] COND TRUE __VERIFIER_nondet_int() && i <= 1000000 [L25] tmp___1 = i [L26] i = i + 1 [L27] k = k + 1 [L24] COND FALSE !(__VERIFIER_nondet_int() && i <= 1000000) [L29] int j = 0; [L30] n = i [L31] COND TRUE 1 [L32] CALL __VERIFIER_assert(k >= 0) [L4] COND FALSE, RET !(!(cond)) [L32] __VERIFIER_assert(k >= 0) [L33] k = k -1 [L34] i = i - 1 [L35] j = j + 1 [L36] COND FALSE !(j >= n) [L31] COND TRUE 1 [L32] CALL __VERIFIER_assert(k >= 0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 30 locations, 1 error locations. UNKNOWN Result, 4.5s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 2.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 80 SDtfs, 109 SDslu, 313 SDs, 0 SdLazy, 283 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 94 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.4s AbstIntTime, 5 AbstIntIterations, 4 AbstIntStrong, 0.9576719576719575 AbsIntWeakeningRatio, 0.5119047619047619 AbsIntAvgWeakeningVarsNumRemoved, 9.380952380952381 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 61 StatesRemovedByMinimization, 4 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/fragtest_simple_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-15_17-20-18-444.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/fragtest_simple_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-15_17-20-18-444.csv Received shutdown request...