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/loops/while_infinite_loop_2_true-unreach-call_false-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-19 08:01:13,907 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 08:01:13,909 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 08:01:13,927 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 08:01:13,927 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 08:01:13,929 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 08:01:13,931 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 08:01:13,935 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 08:01:13,937 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 08:01:13,939 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 08:01:13,942 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 08:01:13,942 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 08:01:13,943 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 08:01:13,944 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 08:01:13,946 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 08:01:13,949 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 08:01:13,951 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 08:01:13,957 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 08:01:13,962 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 08:01:13,967 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 08:01:13,968 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 08:01:13,971 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 08:01:13,975 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-19 08:01:13,993 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 08:01:14,017 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 08:01:14,018 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 08:01:14,019 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 08:01:14,019 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-19 08:01:14,019 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-19 08:01:14,020 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-19 08:01:14,020 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-19 08:01:14,020 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-19 08:01:14,020 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-19 08:01:14,021 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-19 08:01:14,021 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-19 08:01:14,021 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-19 08:01:14,021 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-19 08:01:14,022 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 08:01:14,022 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-19 08:01:14,022 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 08:01:14,023 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 08:01:14,023 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 08:01:14,023 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 08:01:14,023 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 08:01:14,025 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 08:01:14,025 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 08:01:14,026 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 08:01:14,026 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 08:01:14,026 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 08:01:14,026 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 08:01:14,026 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 08:01:14,026 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 08:01:14,027 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 08:01:14,027 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-19 08:01:14,027 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 08:01:14,027 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-19 08:01:14,027 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 08:01:14,028 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-19 08:01:14,028 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-19 08:01:14,091 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 08:01:14,107 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 08:01:14,112 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 08:01:14,114 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 08:01:14,114 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 08:01:14,115 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_2_true-unreach-call_false-termination.i [2018-09-19 08:01:14,462 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ecdba95a/c130b067e42f4b65928c966ad8f2f8dd/FLAG49107b288 [2018-09-19 08:01:14,647 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 08:01:14,648 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_2_true-unreach-call_false-termination.i [2018-09-19 08:01:14,656 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ecdba95a/c130b067e42f4b65928c966ad8f2f8dd/FLAG49107b288 [2018-09-19 08:01:14,676 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ecdba95a/c130b067e42f4b65928c966ad8f2f8dd [2018-09-19 08:01:14,691 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 08:01:14,695 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-19 08:01:14,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 08:01:14,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 08:01:14,704 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 08:01:14,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 08:01:14" (1/1) ... [2018-09-19 08:01:14,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cf4e0c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:14, skipping insertion in model container [2018-09-19 08:01:14,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 08:01:14" (1/1) ... [2018-09-19 08:01:14,721 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 08:01:14,951 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 08:01:14,971 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 08:01:14,975 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 08:01:14,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:14 WrapperNode [2018-09-19 08:01:14,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 08:01:14,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-19 08:01:14,992 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-19 08:01:14,992 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-19 08:01:15,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:14" (1/1) ... [2018-09-19 08:01:15,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:14" (1/1) ... [2018-09-19 08:01:15,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-19 08:01:15,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 08:01:15,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 08:01:15,023 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 08:01:15,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:14" (1/1) ... [2018-09-19 08:01:15,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:14" (1/1) ... [2018-09-19 08:01:15,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:14" (1/1) ... [2018-09-19 08:01:15,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:14" (1/1) ... [2018-09-19 08:01:15,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:14" (1/1) ... [2018-09-19 08:01:15,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:14" (1/1) ... [2018-09-19 08:01:15,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:14" (1/1) ... [2018-09-19 08:01:15,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 08:01:15,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 08:01:15,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 08:01:15,049 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 08:01:15,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 08:01:15,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 08:01:15,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 08:01:15,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 08:01:15,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 08:01:15,128 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 08:01:15,128 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 08:01:15,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-19 08:01:15,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-19 08:01:15,441 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 08:01:15,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 08:01:15 BoogieIcfgContainer [2018-09-19 08:01:15,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 08:01:15,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 08:01:15,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 08:01:15,446 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 08:01:15,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 08:01:14" (1/3) ... [2018-09-19 08:01:15,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f2e0e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 08:01:15, skipping insertion in model container [2018-09-19 08:01:15,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:14" (2/3) ... [2018-09-19 08:01:15,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f2e0e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 08:01:15, skipping insertion in model container [2018-09-19 08:01:15,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 08:01:15" (3/3) ... [2018-09-19 08:01:15,450 INFO L112 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_2_true-unreach-call_false-termination.i [2018-09-19 08:01:15,460 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 08:01:15,469 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 08:01:15,519 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 08:01:15,520 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 08:01:15,520 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 08:01:15,520 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 08:01:15,520 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 08:01:15,520 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 08:01:15,521 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 08:01:15,521 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 08:01:15,521 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 08:01:15,541 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-09-19 08:01:15,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-19 08:01:15,547 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 08:01:15,548 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 08:01:15,549 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 08:01:15,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1870526464, now seen corresponding path program 1 times [2018-09-19 08:01:15,557 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 08:01:15,558 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 11 with the following transitions: [2018-09-19 08:01:15,561 INFO L202 CegarAbsIntRunner]: [0], [4], [17], [21], [24], [26], [32], [33], [34], [38] [2018-09-19 08:01:15,612 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 08:01:15,613 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 08:01:15,652 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 08:01:15,654 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Never found a fixpoint. Largest state had 1 variables. [2018-09-19 08:01:15,688 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 08:01:15,725 INFO L224 lantSequenceWeakener]: Could never weaken! [2018-09-19 08:01:15,725 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 08:01:15,749 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 08:01:15,751 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 08:01:15,751 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-19 08:01:15,751 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 08:01:15,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-19 08:01:15,765 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-19 08:01:15,766 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 08:01:15,779 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2018-09-19 08:01:15,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 08:01:15,843 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2018-09-19 08:01:15,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-19 08:01:15,845 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-09-19 08:01:15,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 08:01:15,855 INFO L225 Difference]: With dead ends: 28 [2018-09-19 08:01:15,855 INFO L226 Difference]: Without dead ends: 14 [2018-09-19 08:01:15,859 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 9 GetRequests, 8 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 08:01:15,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-09-19 08:01:15,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-09-19 08:01:15,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-19 08:01:15,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-09-19 08:01:15,928 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2018-09-19 08:01:15,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 08:01:15,929 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-09-19 08:01:15,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-19 08:01:15,929 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-09-19 08:01:15,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-19 08:01:15,935 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 08:01:15,936 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 08:01:15,936 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 08:01:15,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1863838843, now seen corresponding path program 1 times [2018-09-19 08:01:15,937 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 08:01:15,937 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 12 with the following transitions: [2018-09-19 08:01:15,937 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [14], [21], [24], [26], [32], [33], [34], [36] [2018-09-19 08:01:15,941 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 08:01:15,941 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 08:01:15,958 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 08:01:15,959 INFO L272 AbstractInterpreter]: Visited 10 different actions 10 times. Never merged. Never widened. Never found a fixpoint. Largest state had 2 variables. [2018-09-19 08:01:15,991 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 08:01:16,011 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 50% of their original sizes. [2018-09-19 08:01:16,011 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 08:01:16,099 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 08:01:16,100 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 08:01:16,100 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-19 08:01:16,100 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 08:01:16,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-19 08:01:16,101 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-19 08:01:16,102 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-19 08:01:16,102 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 5 states. [2018-09-19 08:01:16,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 08:01:16,175 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-09-19 08:01:16,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-19 08:01:16,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-09-19 08:01:16,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 08:01:16,176 INFO L225 Difference]: With dead ends: 14 [2018-09-19 08:01:16,176 INFO L226 Difference]: Without dead ends: 0 [2018-09-19 08:01:16,178 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-19 08:01:16,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-19 08:01:16,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-19 08:01:16,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-19 08:01:16,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-19 08:01:16,180 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2018-09-19 08:01:16,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 08:01:16,180 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-19 08:01:16,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-19 08:01:16,181 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-19 08:01:16,181 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-19 08:01:16,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-19 08:01:16,296 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-09-19 08:01:16,296 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-19 08:01:16,296 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-19 08:01:16,297 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-19 08:01:16,297 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-19 08:01:16,297 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-19 08:01:16,297 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 9 18) the Hoare annotation is: true [2018-09-19 08:01:16,297 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 9 18) no Hoare annotation was computed. [2018-09-19 08:01:16,298 INFO L422 ceAbstractionStarter]: At program point L14(line 14) the Hoare annotation is: (let ((.cse0 (* 2 main_~x~0))) (and (<= .cse0 0) (<= 0 .cse0))) [2018-09-19 08:01:16,298 INFO L422 ceAbstractionStarter]: At program point L14-1(lines 12 15) the Hoare annotation is: (let ((.cse0 (* 2 main_~x~0))) (and (<= .cse0 0) (<= 0 .cse0))) [2018-09-19 08:01:16,298 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 9 18) no Hoare annotation was computed. [2018-09-19 08:01:16,298 INFO L426 ceAbstractionStarter]: For program point L12-1(lines 12 15) no Hoare annotation was computed. [2018-09-19 08:01:16,299 INFO L422 ceAbstractionStarter]: At program point L12-3(lines 12 15) the Hoare annotation is: false [2018-09-19 08:01:16,299 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-09-19 08:01:16,300 INFO L429 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-09-19 08:01:16,300 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-09-19 08:01:16,300 INFO L426 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-09-19 08:01:16,300 INFO L426 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-09-19 08:01:16,300 INFO L426 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-09-19 08:01:16,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 08:01:16 BoogieIcfgContainer [2018-09-19 08:01:16,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 08:01:16,310 INFO L168 Benchmark]: Toolchain (without parser) took 1618.52 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.2 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -743.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 08:01:16,312 INFO L168 Benchmark]: CDTParser took 0.53 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 08:01:16,313 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.79 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 08:01:16,314 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.43 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 08:01:16,315 INFO L168 Benchmark]: Boogie Preprocessor took 29.17 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 08:01:16,316 INFO L168 Benchmark]: RCFGBuilder took 393.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -798.3 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-09-19 08:01:16,317 INFO L168 Benchmark]: TraceAbstraction took 866.39 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: 44.8 MB). Peak memory consumption was 44.8 MB. Max. memory is 7.1 GB. [2018-09-19 08:01:16,322 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 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 294.79 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 26.43 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 29.17 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 393.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -798.3 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 866.39 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: 44.8 MB). Peak memory consumption was 44.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 2 * x <= 0 && 0 <= 2 * x - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 7 SDslu, 31 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 2 AbstIntStrong, 0.9210526315789473 AbsIntWeakeningRatio, 0.3157894736842105 AbsIntAvgWeakeningVarsNumRemoved, 0.3157894736842105 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 10 PreInvPairs, 12 NumberOfFragments, 28 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: No data available, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/while_infinite_loop_2_true-unreach-call_false-termination.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-19_08-01-16-337.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/while_infinite_loop_2_true-unreach-call_false-termination.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-19_08-01-16-337.csv Received shutdown request...