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/large_const_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-19 08:01:28,091 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 08:01:28,093 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 08:01:28,107 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 08:01:28,108 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 08:01:28,109 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 08:01:28,111 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 08:01:28,115 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 08:01:28,117 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 08:01:28,118 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 08:01:28,119 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 08:01:28,119 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 08:01:28,120 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 08:01:28,121 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 08:01:28,122 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 08:01:28,123 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 08:01:28,124 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 08:01:28,126 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 08:01:28,128 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 08:01:28,129 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 08:01:28,130 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 08:01:28,132 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 08:01:28,134 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 08:01:28,134 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 08:01:28,134 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 08:01:28,135 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 08:01:28,136 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 08:01:28,137 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 08:01:28,138 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 08:01:28,139 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 08:01:28,139 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 08:01:28,140 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-19 08:01:28,142 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 [2018-09-19 08:01:28,161 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 08:01:28,164 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 08:01:28,165 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 08:01:28,165 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-19 08:01:28,165 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-19 08:01:28,166 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-19 08:01:28,166 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-19 08:01:28,166 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-19 08:01:28,166 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-19 08:01:28,167 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-19 08:01:28,167 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-19 08:01:28,167 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-19 08:01:28,167 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-19 08:01:28,168 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 08:01:28,168 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-19 08:01:28,168 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 08:01:28,168 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 08:01:28,169 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 08:01:28,169 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 08:01:28,169 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 08:01:28,169 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 08:01:28,169 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 08:01:28,170 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 08:01:28,170 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 08:01:28,170 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 08:01:28,170 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 08:01:28,170 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 08:01:28,171 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 08:01:28,171 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 08:01:28,171 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-19 08:01:28,171 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 08:01:28,171 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-19 08:01:28,172 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 08:01:28,172 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-19 08:01:28,172 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-19 08:01:28,234 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 08:01:28,257 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 08:01:28,264 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 08:01:28,266 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 08:01:28,266 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 08:01:28,267 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/large_const_true-unreach-call_true-termination.i [2018-09-19 08:01:28,622 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/060dd2462/9b935a4a3afd496196c88829979716a9/FLAG7e02a39f3 [2018-09-19 08:01:28,790 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 08:01:28,791 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const_true-unreach-call_true-termination.i [2018-09-19 08:01:28,798 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/060dd2462/9b935a4a3afd496196c88829979716a9/FLAG7e02a39f3 [2018-09-19 08:01:28,814 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/060dd2462/9b935a4a3afd496196c88829979716a9 [2018-09-19 08:01:28,826 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 08:01:28,831 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-19 08:01:28,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 08:01:28,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 08:01:28,840 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 08:01:28,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 08:01:28" (1/1) ... [2018-09-19 08:01:28,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cedc78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:28, skipping insertion in model container [2018-09-19 08:01:28,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 08:01:28" (1/1) ... [2018-09-19 08:01:28,857 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 08:01:29,044 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 08:01:29,062 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 08:01:29,069 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 08:01:29,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:29 WrapperNode [2018-09-19 08:01:29,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 08:01:29,084 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-19 08:01:29,084 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-19 08:01:29,084 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-19 08:01:29,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:29" (1/1) ... [2018-09-19 08:01:29,101 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:29" (1/1) ... [2018-09-19 08:01:29,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-19 08:01:29,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 08:01:29,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 08:01:29,109 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 08:01:29,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:29" (1/1) ... [2018-09-19 08:01:29,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:29" (1/1) ... [2018-09-19 08:01:29,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:29" (1/1) ... [2018-09-19 08:01:29,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:29" (1/1) ... [2018-09-19 08:01:29,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:29" (1/1) ... [2018-09-19 08:01:29,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:29" (1/1) ... [2018-09-19 08:01:29,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:29" (1/1) ... [2018-09-19 08:01:29,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 08:01:29,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 08:01:29,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 08:01:29,133 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 08:01:29,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:29" (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 08:01:29,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 08:01:29,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 08:01:29,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 08:01:29,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 08:01:29,198 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 08:01:29,199 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 08:01:29,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-19 08:01:29,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-19 08:01:29,668 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 08:01:29,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 08:01:29 BoogieIcfgContainer [2018-09-19 08:01:29,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 08:01:29,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 08:01:29,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 08:01:29,673 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 08:01:29,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 08:01:28" (1/3) ... [2018-09-19 08:01:29,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54922514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 08:01:29, skipping insertion in model container [2018-09-19 08:01:29,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:29" (2/3) ... [2018-09-19 08:01:29,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54922514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 08:01:29, skipping insertion in model container [2018-09-19 08:01:29,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 08:01:29" (3/3) ... [2018-09-19 08:01:29,677 INFO L112 eAbstractionObserver]: Analyzing ICFG large_const_true-unreach-call_true-termination.i [2018-09-19 08:01:29,687 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 08:01:29,695 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 08:01:29,744 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 08:01:29,744 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 08:01:29,745 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 08:01:29,745 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 08:01:29,745 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 08:01:29,745 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 08:01:29,745 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 08:01:29,746 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 08:01:29,746 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 08:01:29,765 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-09-19 08:01:29,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-19 08:01:29,772 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 08:01:29,774 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 08:01:29,775 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 08:01:29,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1169309281, now seen corresponding path program 1 times [2018-09-19 08:01:29,783 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 08:01:29,785 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-09-19 08:01:29,787 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [35], [37], [41], [47], [55], [58], [60], [66], [67], [68], [70] [2018-09-19 08:01:29,843 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 08:01:29,844 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 08:01:29,914 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 08:01:29,915 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 15 variables. [2018-09-19 08:01:29,934 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 08:01:30,003 INFO L232 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 86.67% of their original sizes. [2018-09-19 08:01:30,003 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 08:01:30,054 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 08:01:30,055 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 08:01:30,056 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 08:01:30,056 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 08:01:30,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 08:01:30,066 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 08:01:30,067 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-19 08:01:30,069 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 4 states. [2018-09-19 08:01:30,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 08:01:30,330 INFO L93 Difference]: Finished difference Result 56 states and 76 transitions. [2018-09-19 08:01:30,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 08:01:30,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-09-19 08:01:30,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 08:01:30,343 INFO L225 Difference]: With dead ends: 56 [2018-09-19 08:01:30,343 INFO L226 Difference]: Without dead ends: 32 [2018-09-19 08:01:30,347 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-19 08:01:30,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-09-19 08:01:30,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 22. [2018-09-19 08:01:30,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-09-19 08:01:30,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2018-09-19 08:01:30,395 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 14 [2018-09-19 08:01:30,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 08:01:30,396 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2018-09-19 08:01:30,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 08:01:30,396 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2018-09-19 08:01:30,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-19 08:01:30,398 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 08:01:30,399 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 08:01:30,399 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 08:01:30,399 INFO L82 PathProgramCache]: Analyzing trace with hash -659000362, now seen corresponding path program 1 times [2018-09-19 08:01:30,400 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 08:01:30,400 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-09-19 08:01:30,400 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [37], [41], [47], [55], [58], [60], [66], [67], [68], [70] [2018-09-19 08:01:30,404 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 08:01:30,407 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 08:01:30,420 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 08:01:30,420 INFO L272 AbstractInterpreter]: Visited 11 different actions 11 times. Never merged. Never widened. Never found a fixpoint. Largest state had 15 variables. [2018-09-19 08:01:30,433 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 08:01:30,473 INFO L232 lantSequenceWeakener]: Weakened 6 states. On average, predicates are now at 79.53% of their original sizes. [2018-09-19 08:01:30,474 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 08:01:30,617 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 08:01:30,618 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 08:01:30,618 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-19 08:01:30,618 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 08:01:30,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-19 08:01:30,621 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-19 08:01:30,622 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-19 08:01:30,622 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 6 states. [2018-09-19 08:01:30,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 08:01:30,932 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2018-09-19 08:01:30,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-19 08:01:30,933 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-09-19 08:01:30,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 08:01:30,934 INFO L225 Difference]: With dead ends: 37 [2018-09-19 08:01:30,934 INFO L226 Difference]: Without dead ends: 24 [2018-09-19 08:01:30,936 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-09-19 08:01:30,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-09-19 08:01:30,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-09-19 08:01:30,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-09-19 08:01:30,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2018-09-19 08:01:30,943 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2018-09-19 08:01:30,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 08:01:30,944 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-09-19 08:01:30,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-19 08:01:30,944 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2018-09-19 08:01:30,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-19 08:01:30,945 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 08:01:30,945 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 08:01:30,945 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 08:01:30,946 INFO L82 PathProgramCache]: Analyzing trace with hash 701537581, now seen corresponding path program 1 times [2018-09-19 08:01:30,946 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 08:01:30,946 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-09-19 08:01:30,946 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [22], [25], [37], [41], [47], [55], [58], [60], [66], [67], [68], [70] [2018-09-19 08:01:30,948 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 08:01:30,948 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 08:01:31,137 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 08:01:31,137 INFO L272 AbstractInterpreter]: Visited 17 different actions 223 times. Merged at 8 different actions 151 times. Widened at 2 different actions 30 times. Found 1 fixpoints after 1 different actions. Largest state had 17 variables. [2018-09-19 08:01:31,177 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 08:01:31,232 INFO L232 lantSequenceWeakener]: Weakened 12 states. On average, predicates are now at 72.16% of their original sizes. [2018-09-19 08:01:31,233 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 08:01:31,901 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 08:01:31,901 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 08:01:31,901 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-19 08:01:31,902 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 08:01:31,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-19 08:01:31,902 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-19 08:01:31,903 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-09-19 08:01:31,903 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 12 states. [2018-09-19 08:01:32,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 08:01:32,561 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2018-09-19 08:01:32,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-19 08:01:32,562 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2018-09-19 08:01:32,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 08:01:32,564 INFO L225 Difference]: With dead ends: 58 [2018-09-19 08:01:32,565 INFO L226 Difference]: Without dead ends: 42 [2018-09-19 08:01:32,566 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2018-09-19 08:01:32,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-09-19 08:01:32,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2018-09-19 08:01:32,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-09-19 08:01:32,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-09-19 08:01:32,582 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 19 [2018-09-19 08:01:32,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 08:01:32,582 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-09-19 08:01:32,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-19 08:01:32,583 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-09-19 08:01:32,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-19 08:01:32,583 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 08:01:32,584 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 08:01:32,584 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 08:01:32,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1708424439, now seen corresponding path program 1 times [2018-09-19 08:01:32,584 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 08:01:32,585 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-09-19 08:01:32,585 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [22], [27], [32], [37], [41], [47], [55], [58], [60], [66], [67], [68], [70] [2018-09-19 08:01:32,587 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 08:01:32,587 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 08:01:32,704 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 08:01:32,705 INFO L272 AbstractInterpreter]: Visited 18 different actions 159 times. Merged at 9 different actions 107 times. Widened at 2 different actions 16 times. Found 1 fixpoints after 1 different actions. Largest state had 17 variables. [2018-09-19 08:01:32,713 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 08:01:32,753 INFO L232 lantSequenceWeakener]: Weakened 13 states. On average, predicates are now at 71.34% of their original sizes. [2018-09-19 08:01:32,753 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 08:01:33,516 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 08:01:33,516 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 08:01:33,517 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-09-19 08:01:33,517 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 08:01:33,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-19 08:01:33,517 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-19 08:01:33,518 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2018-09-19 08:01:33,518 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 13 states. [2018-09-19 08:01:34,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 08:01:34,192 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2018-09-19 08:01:34,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-19 08:01:34,193 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2018-09-19 08:01:34,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 08:01:34,197 INFO L225 Difference]: With dead ends: 68 [2018-09-19 08:01:34,197 INFO L226 Difference]: Without dead ends: 52 [2018-09-19 08:01:34,198 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2018-09-19 08:01:34,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-09-19 08:01:34,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 37. [2018-09-19 08:01:34,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-09-19 08:01:34,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2018-09-19 08:01:34,214 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 20 [2018-09-19 08:01:34,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 08:01:34,214 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2018-09-19 08:01:34,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-19 08:01:34,215 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2018-09-19 08:01:34,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-19 08:01:34,216 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 08:01:34,216 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 08:01:34,216 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 08:01:34,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1315397429, now seen corresponding path program 1 times [2018-09-19 08:01:34,217 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 08:01:34,217 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-09-19 08:01:34,217 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [22], [27], [30], [37], [41], [47], [55], [58], [60], [66], [67], [68], [70] [2018-09-19 08:01:34,219 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 08:01:34,219 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 08:01:34,384 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 08:01:34,385 INFO L272 AbstractInterpreter]: Visited 18 different actions 363 times. Merged at 9 different actions 260 times. Widened at 2 different actions 50 times. Found 1 fixpoints after 1 different actions. Largest state had 17 variables. [2018-09-19 08:01:34,386 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 08:01:34,423 INFO L232 lantSequenceWeakener]: Weakened 13 states. On average, predicates are now at 71.34% of their original sizes. [2018-09-19 08:01:34,423 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 08:01:34,694 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 08:01:34,695 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 08:01:34,695 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-09-19 08:01:34,695 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 08:01:34,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-19 08:01:34,696 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-19 08:01:34,697 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2018-09-19 08:01:34,697 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 13 states. [2018-09-19 08:01:35,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 08:01:35,619 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2018-09-19 08:01:35,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-19 08:01:35,619 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2018-09-19 08:01:35,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 08:01:35,621 INFO L225 Difference]: With dead ends: 62 [2018-09-19 08:01:35,622 INFO L226 Difference]: Without dead ends: 46 [2018-09-19 08:01:35,623 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2018-09-19 08:01:35,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-09-19 08:01:35,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2018-09-19 08:01:35,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-09-19 08:01:35,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-09-19 08:01:35,641 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 20 [2018-09-19 08:01:35,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 08:01:35,641 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-09-19 08:01:35,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-19 08:01:35,642 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-09-19 08:01:35,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-09-19 08:01:35,644 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 08:01:35,644 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 08:01:35,644 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 08:01:35,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1155724272, now seen corresponding path program 1 times [2018-09-19 08:01:35,645 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 08:01:35,645 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 28 with the following transitions: [2018-09-19 08:01:35,645 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [22], [25], [37], [41], [47], [49], [55], [58], [60], [63], [65], [66], [67], [68], [70], [71] [2018-09-19 08:01:35,647 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 08:01:35,648 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 08:01:35,772 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-19 08:01:35,773 INFO L272 AbstractInterpreter]: Visited 22 different actions 328 times. Merged at 10 different actions 175 times. Widened at 3 different actions 32 times. Found 20 fixpoints after 3 different actions. Largest state had 19 variables. [2018-09-19 08:01:35,781 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-19 08:01:35,801 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-19 08:01:35,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 08:01:35 BoogieIcfgContainer [2018-09-19 08:01:35,802 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 08:01:35,804 INFO L168 Benchmark]: Toolchain (without parser) took 6977.73 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 705.2 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -258.1 MB). Peak memory consumption was 447.0 MB. Max. memory is 7.1 GB. [2018-09-19 08:01:35,806 INFO L168 Benchmark]: CDTParser took 0.24 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 08:01:35,807 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.74 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-19 08:01:35,808 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.87 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 08:01:35,809 INFO L168 Benchmark]: Boogie Preprocessor took 23.60 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 08:01:35,809 INFO L168 Benchmark]: RCFGBuilder took 536.66 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 705.2 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -742.5 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-09-19 08:01:35,810 INFO L168 Benchmark]: TraceAbstraction took 6132.56 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 473.8 MB). Peak memory consumption was 473.8 MB. Max. memory is 7.1 GB. [2018-09-19 08:01:35,815 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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. * CACSL2BoogieTranslator took 250.74 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 23.87 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 23.60 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 536.66 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 705.2 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -742.5 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6132.56 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 473.8 MB). Peak memory consumption was 473.8 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 c1 = 4000; [L12] int c2 = 2000; [L13] int c3 = 10000; [L14] int n, v; [L15] int i, k, j; [L16] n = __VERIFIER_nondet_int() [L17] COND FALSE !(!(0 <= n && n < 10)) [L18] k = 0 [L19] i = 0 [L20] COND TRUE i < n [L21] i++ [L21] i++ [L22] v = __VERIFIER_nondet_int() [L23] COND FALSE !(!(0 <= v && n < 2)) [L24] COND TRUE v == 0 [L25] k += c1 [L20] COND FALSE !(i < n) [L31] j = 0 [L32] COND TRUE j < n [L33] CALL __VERIFIER_assert(k > 0) [L4] COND FALSE, RET !(!(cond)) [L33] __VERIFIER_assert(k > 0) [L34] j++ [L34] j++ [L35] k-- [L35] k-- [L32] COND TRUE j < n [L33] CALL __VERIFIER_assert(k > 0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. UNKNOWN Result, 6.0s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 2.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 102 SDtfs, 222 SDslu, 351 SDs, 0 SdLazy, 435 SolverSat, 74 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 94 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.8s AbstIntTime, 6 AbstIntIterations, 5 AbstIntStrong, 0.8638554216867467 AbsIntWeakeningRatio, 1.216867469879518 AbsIntAvgWeakeningVarsNumRemoved, 30.265060240963855 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 46 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/large_const_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-19_08-01-35-826.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/large_const_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-19_08-01-35-826.csv Received shutdown request...