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_INTCON-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-invgen/fragtest_simple_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-19 11:36:19,170 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 11:36:19,173 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 11:36:19,192 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 11:36:19,193 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 11:36:19,194 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 11:36:19,196 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 11:36:19,199 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 11:36:19,201 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 11:36:19,202 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 11:36:19,211 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 11:36:19,211 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 11:36:19,212 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 11:36:19,213 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 11:36:19,215 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 11:36:19,215 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 11:36:19,216 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 11:36:19,218 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 11:36:19,220 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 11:36:19,221 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 11:36:19,223 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 11:36:19,224 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 11:36:19,226 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 11:36:19,226 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 11:36:19,226 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 11:36:19,227 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 11:36:19,228 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 11:36:19,229 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 11:36:19,230 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 11:36:19,231 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 11:36:19,231 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 11:36:19,232 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-19 11:36:19,236 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf [2018-09-19 11:36:19,263 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 11:36:19,264 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 11:36:19,266 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 11:36:19,266 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-19 11:36:19,267 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-19 11:36:19,267 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-19 11:36:19,267 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-19 11:36:19,267 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-19 11:36:19,268 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-19 11:36:19,268 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-19 11:36:19,268 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-19 11:36:19,269 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-19 11:36:19,271 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 11:36:19,272 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-19 11:36:19,272 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 11:36:19,272 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 11:36:19,272 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 11:36:19,274 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 11:36:19,274 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 11:36:19,274 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 11:36:19,274 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 11:36:19,275 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 11:36:19,275 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 11:36:19,275 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 11:36:19,275 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 11:36:19,276 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 11:36:19,276 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 11:36:19,276 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 11:36:19,276 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-19 11:36:19,276 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 11:36:19,277 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-19 11:36:19,277 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 11:36:19,277 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-19 11:36:19,277 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-19 11:36:19,328 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 11:36:19,342 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 11:36:19,348 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 11:36:19,349 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 11:36:19,349 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 11:36:19,350 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/fragtest_simple_true-unreach-call_true-termination.i [2018-09-19 11:36:19,688 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f8d10576/9d2758f6d9b74c69acf5f7f6de4c3be8/FLAG915161550 [2018-09-19 11:36:19,877 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 11:36:19,878 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/fragtest_simple_true-unreach-call_true-termination.i [2018-09-19 11:36:19,887 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f8d10576/9d2758f6d9b74c69acf5f7f6de4c3be8/FLAG915161550 [2018-09-19 11:36:19,906 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f8d10576/9d2758f6d9b74c69acf5f7f6de4c3be8 [2018-09-19 11:36:19,918 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 11:36:19,922 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-19 11:36:19,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 11:36:19,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 11:36:19,931 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 11:36:19,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 11:36:19" (1/1) ... [2018-09-19 11:36:19,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29daa24b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:19, skipping insertion in model container [2018-09-19 11:36:19,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 11:36:19" (1/1) ... [2018-09-19 11:36:19,948 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 11:36:20,144 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 11:36:20,162 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 11:36:20,170 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 11:36:20,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:20 WrapperNode [2018-09-19 11:36:20,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 11:36:20,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-19 11:36:20,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-19 11:36:20,186 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-19 11:36:20,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:20" (1/1) ... [2018-09-19 11:36:20,203 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:20" (1/1) ... [2018-09-19 11:36:20,210 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-19 11:36:20,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 11:36:20,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 11:36:20,211 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 11:36:20,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:20" (1/1) ... [2018-09-19 11:36:20,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:20" (1/1) ... [2018-09-19 11:36:20,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:20" (1/1) ... [2018-09-19 11:36:20,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:20" (1/1) ... [2018-09-19 11:36:20,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:20" (1/1) ... [2018-09-19 11:36:20,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:20" (1/1) ... [2018-09-19 11:36:20,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:20" (1/1) ... [2018-09-19 11:36:20,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 11:36:20,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 11:36:20,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 11:36:20,235 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 11:36:20,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:20" (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 [2018-09-19 11:36:20,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 11:36:20,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 11:36:20,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 11:36:20,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 11:36:20,314 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 11:36:20,315 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 11:36:20,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-19 11:36:20,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-19 11:36:21,025 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 11:36:21,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 11:36:21 BoogieIcfgContainer [2018-09-19 11:36:21,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 11:36:21,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 11:36:21,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 11:36:21,038 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 11:36:21,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 11:36:19" (1/3) ... [2018-09-19 11:36:21,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548c5e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 11:36:21, skipping insertion in model container [2018-09-19 11:36:21,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:20" (2/3) ... [2018-09-19 11:36:21,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548c5e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 11:36:21, skipping insertion in model container [2018-09-19 11:36:21,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 11:36:21" (3/3) ... [2018-09-19 11:36:21,042 INFO L112 eAbstractionObserver]: Analyzing ICFG fragtest_simple_true-unreach-call_true-termination.i [2018-09-19 11:36:21,053 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 11:36:21,061 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 11:36:21,115 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 11:36:21,116 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 11:36:21,116 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 11:36:21,116 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 11:36:21,116 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 11:36:21,116 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 11:36:21,117 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 11:36:21,117 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 11:36:21,117 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 11:36:21,137 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-09-19 11:36:21,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-09-19 11:36:21,144 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 11:36:21,146 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 11:36:21,147 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 11:36:21,153 INFO L82 PathProgramCache]: Analyzing trace with hash 62896836, now seen corresponding path program 1 times [2018-09-19 11:36:21,156 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 11:36:21,157 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-09-19 11:36:21,159 INFO L202 CegarAbsIntRunner]: [0], [4], [17], [21], [25], [38], [40], [44], [50], [63], [66], [68], [74], [75], [76], [78] [2018-09-19 11:36:21,198 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 11:36:21,198 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 11:36:21,279 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 11:36:21,280 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Never found a fixpoint. Largest state had 7 variables. [2018-09-19 11:36:21,296 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 11:36:21,345 INFO L224 lantSequenceWeakener]: Could never weaken! [2018-09-19 11:36:21,345 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 11:36:21,359 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 11:36:21,361 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 11:36:21,361 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-19 11:36:21,361 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 11:36:21,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-19 11:36:21,371 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-19 11:36:21,372 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 11:36:21,374 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 3 states. [2018-09-19 11:36:21,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 11:36:21,512 INFO L93 Difference]: Finished difference Result 65 states and 89 transitions. [2018-09-19 11:36:21,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-19 11:36:21,514 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-09-19 11:36:21,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 11:36:21,525 INFO L225 Difference]: With dead ends: 65 [2018-09-19 11:36:21,525 INFO L226 Difference]: Without dead ends: 38 [2018-09-19 11:36:21,528 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 [2018-09-19 11:36:21,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-09-19 11:36:21,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25. [2018-09-19 11:36:21,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-09-19 11:36:21,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2018-09-19 11:36:21,572 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2018-09-19 11:36:21,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 11:36:21,573 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-09-19 11:36:21,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-19 11:36:21,573 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2018-09-19 11:36:21,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-19 11:36:21,574 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 11:36:21,575 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] [2018-09-19 11:36:21,575 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 11:36:21,576 INFO L82 PathProgramCache]: Analyzing trace with hash -111227420, now seen corresponding path program 1 times [2018-09-19 11:36:21,576 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 11:36:21,576 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-09-19 11:36:21,577 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [10], [13], [21], [25], [29], [31], [34], [40], [44], [50], [63], [66], [68], [74], [75], [76], [78] [2018-09-19 11:36:21,579 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 11:36:21,579 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 11:36:21,611 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-19 11:36:21,611 INFO L272 AbstractInterpreter]: Visited 20 different actions 20 times. Never merged. Never widened. Never found a fixpoint. Largest state had 9 variables. [2018-09-19 11:36:21,620 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-19 11:36:21,639 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-19 11:36:21,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 11:36:21 BoogieIcfgContainer [2018-09-19 11:36:21,639 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 11:36:21,640 INFO L168 Benchmark]: Toolchain (without parser) took 1721.96 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 721.9 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -733.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 11:36:21,643 INFO L168 Benchmark]: CDTParser took 0.16 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. [2018-09-19 11:36:21,643 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.60 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. [2018-09-19 11:36:21,645 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.58 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. [2018-09-19 11:36:21,645 INFO L168 Benchmark]: Boogie Preprocessor took 24.13 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. [2018-09-19 11:36:21,646 INFO L168 Benchmark]: RCFGBuilder took 791.79 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 721.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -773.0 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2018-09-19 11:36:21,647 INFO L168 Benchmark]: TraceAbstraction took 612.22 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 29.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 7.1 GB. [2018-09-19 11:36:21,652 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 261.60 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 24.58 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 24.13 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 791.79 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 721.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -773.0 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 612.22 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 29.3 MB). Peak memory consumption was 29.3 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 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 TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 30 locations, 1 error locations. UNKNOWN Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 26 SDtfs, 10 SDslu, 23 SDs, 0 SdLazy, 17 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.6666666666666666 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 13 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/fragtest_simple_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-19_11-36-21-665.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/fragtest_simple_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-19_11-36-21-665.csv Received shutdown request...