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_CON-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-acceleration/functions_true-unreach-call1_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 15:47:44,781 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 15:47:44,784 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 15:47:44,796 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 15:47:44,797 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 15:47:44,798 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 15:47:44,799 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 15:47:44,801 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 15:47:44,803 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 15:47:44,804 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 15:47:44,805 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 15:47:44,806 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 15:47:44,807 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 15:47:44,808 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 15:47:44,809 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 15:47:44,810 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 15:47:44,811 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 15:47:44,813 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 15:47:44,815 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 15:47:44,817 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 15:47:44,818 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 15:47:44,820 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 15:47:44,822 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-15 15:47:44,823 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-15 15:47:44,823 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-15 15:47:44,824 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-15 15:47:44,825 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-15 15:47:44,826 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-15 15:47:44,827 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-15 15:47:44,829 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-15 15:47:44,829 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-15 15:47:44,830 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-15 15:47:44,830 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-15 15:47:44,831 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-15 15:47:44,832 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-15 15:47:44,833 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-15 15:47:44,833 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf [2018-09-15 15:47:44,850 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 15:47:44,850 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 15:47:44,851 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 15:47:44,851 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 15:47:44,852 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 15:47:44,852 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 15:47:44,852 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 15:47:44,852 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-15 15:47:44,853 INFO L133 SettingsManager]: * Abstract domain=CongruenceDomain [2018-09-15 15:47:44,853 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 15:47:44,853 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 15:47:44,853 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-15 15:47:44,854 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 15:47:44,854 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 15:47:44,854 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 15:47:44,855 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 15:47:44,855 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 15:47:44,855 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 15:47:44,855 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 15:47:44,855 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 15:47:44,856 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 15:47:44,856 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 15:47:44,856 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 15:47:44,856 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 15:47:44,856 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 15:47:44,857 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 15:47:44,857 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 15:47:44,857 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 15:47:44,857 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 15:47:44,857 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 15:47:44,858 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 15:47:44,858 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 15:47:44,858 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 15:47:44,858 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 15:47:44,904 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 15:47:44,919 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 15:47:44,923 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 15:47:44,925 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 15:47:44,926 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 15:47:44,927 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/functions_true-unreach-call1_true-termination.i [2018-09-15 15:47:45,335 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52d729a78/e496e21a41864f97950ae5a480ba82e1/FLAG7fb518b33 [2018-09-15 15:47:45,519 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 15:47:45,520 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/functions_true-unreach-call1_true-termination.i [2018-09-15 15:47:45,527 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52d729a78/e496e21a41864f97950ae5a480ba82e1/FLAG7fb518b33 [2018-09-15 15:47:45,547 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52d729a78/e496e21a41864f97950ae5a480ba82e1 [2018-09-15 15:47:45,557 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 15:47:45,560 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 15:47:45,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 15:47:45,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 15:47:45,569 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 15:47:45,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 03:47:45" (1/1) ... [2018-09-15 15:47:45,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31992bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:45, skipping insertion in model container [2018-09-15 15:47:45,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 03:47:45" (1/1) ... [2018-09-15 15:47:45,587 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 15:47:45,770 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 15:47:45,788 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 15:47:45,791 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 15:47:45,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:45 WrapperNode [2018-09-15 15:47:45,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 15:47:45,806 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 15:47:45,806 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 15:47:45,806 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 15:47:45,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:45" (1/1) ... [2018-09-15 15:47:45,823 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:45" (1/1) ... [2018-09-15 15:47:45,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 15:47:45,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 15:47:45,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 15:47:45,830 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 15:47:45,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:45" (1/1) ... [2018-09-15 15:47:45,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:45" (1/1) ... [2018-09-15 15:47:45,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:45" (1/1) ... [2018-09-15 15:47:45,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:45" (1/1) ... [2018-09-15 15:47:45,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:45" (1/1) ... [2018-09-15 15:47:45,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:45" (1/1) ... [2018-09-15 15:47:45,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:45" (1/1) ... [2018-09-15 15:47:45,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 15:47:45,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 15:47:45,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 15:47:45,854 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 15:47:45,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 15:47:45,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 15:47:45,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 15:47:45,937 INFO L130 BoogieDeclarations]: Found specification of procedure f [2018-09-15 15:47:45,938 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2018-09-15 15:47:45,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 15:47:45,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 15:47:45,938 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 15:47:45,938 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 15:47:45,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-15 15:47:45,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-15 15:47:46,378 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 15:47:46,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 03:47:46 BoogieIcfgContainer [2018-09-15 15:47:46,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 15:47:46,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 15:47:46,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 15:47:46,384 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 15:47:46,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 03:47:45" (1/3) ... [2018-09-15 15:47:46,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b667f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 03:47:46, skipping insertion in model container [2018-09-15 15:47:46,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:45" (2/3) ... [2018-09-15 15:47:46,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b667f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 03:47:46, skipping insertion in model container [2018-09-15 15:47:46,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 03:47:46" (3/3) ... [2018-09-15 15:47:46,388 INFO L112 eAbstractionObserver]: Analyzing ICFG functions_true-unreach-call1_true-termination.i [2018-09-15 15:47:46,397 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 15:47:46,404 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 15:47:46,448 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 15:47:46,449 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 15:47:46,449 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 15:47:46,449 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 15:47:46,449 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 15:47:46,449 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 15:47:46,449 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 15:47:46,450 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 15:47:46,450 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 15:47:46,477 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-09-15 15:47:46,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-15 15:47:46,485 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:47:46,487 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 15:47:46,489 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:47:46,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1196028990, now seen corresponding path program 1 times [2018-09-15 15:47:46,500 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:47:46,501 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 11 with the following transitions: [2018-09-15 15:47:46,503 INFO L202 CegarAbsIntRunner]: [0], [6], [20], [24], [27], [29], [35], [36], [37], [41] [2018-09-15 15:47:46,536 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:47:46,536 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:47:46,589 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:47:46,590 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Never found a fixpoint. Largest state had 1 variables. [2018-09-15 15:47:46,602 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:47:46,642 INFO L224 lantSequenceWeakener]: Could never weaken! [2018-09-15 15:47:46,642 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:47:46,670 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:47:46,671 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:47:46,672 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-15 15:47:46,672 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:47:46,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-15 15:47:46,691 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-15 15:47:46,691 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-15 15:47:46,694 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2018-09-15 15:47:46,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:47:46,768 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2018-09-15 15:47:46,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-15 15:47:46,770 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-09-15 15:47:46,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:47:46,782 INFO L225 Difference]: With dead ends: 38 [2018-09-15 15:47:46,782 INFO L226 Difference]: Without dead ends: 21 [2018-09-15 15:47:46,788 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 [2018-09-15 15:47:46,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-09-15 15:47:46,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2018-09-15 15:47:46,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-15 15:47:46,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-09-15 15:47:46,850 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2018-09-15 15:47:46,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:47:46,851 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-09-15 15:47:46,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-15 15:47:46,852 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-09-15 15:47:46,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-15 15:47:46,853 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:47:46,853 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 15:47:46,854 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:47:46,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1261609818, now seen corresponding path program 1 times [2018-09-15 15:47:46,854 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:47:46,855 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2018-09-15 15:47:46,855 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [16], [18], [24], [27], [29], [35], [36], [37], [39], [40], [41] [2018-09-15 15:47:46,857 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:47:46,857 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:47:46,913 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:47:46,913 INFO L272 AbstractInterpreter]: Visited 16 different actions 32 times. Merged at 4 different actions 8 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 3 variables. [2018-09-15 15:47:46,933 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:47:46,969 INFO L232 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 58.33% of their original sizes. [2018-09-15 15:47:46,969 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:47:47,133 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:47:47,133 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:47:47,133 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-15 15:47:47,133 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:47:47,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-15 15:47:47,135 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-15 15:47:47,135 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-09-15 15:47:47,135 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 9 states. [2018-09-15 15:47:47,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:47:47,276 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-09-15 15:47:47,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-15 15:47:47,276 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2018-09-15 15:47:47,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:47:47,277 INFO L225 Difference]: With dead ends: 19 [2018-09-15 15:47:47,277 INFO L226 Difference]: Without dead ends: 0 [2018-09-15 15:47:47,279 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-09-15 15:47:47,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-15 15:47:47,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-15 15:47:47,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-15 15:47:47,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-15 15:47:47,280 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2018-09-15 15:47:47,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:47:47,281 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-15 15:47:47,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-15 15:47:47,281 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-15 15:47:47,281 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-15 15:47:47,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-15 15:47:47,521 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-09-15 15:47:47,522 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-15 15:47:47,522 INFO L426 ceAbstractionStarter]: For program point fEXIT(lines 8 10) no Hoare annotation was computed. [2018-09-15 15:47:47,522 INFO L429 ceAbstractionStarter]: At program point fENTRY(lines 8 10) the Hoare annotation is: true [2018-09-15 15:47:47,522 INFO L426 ceAbstractionStarter]: For program point fFINAL(lines 8 10) no Hoare annotation was computed. [2018-09-15 15:47:47,522 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-15 15:47:47,522 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-15 15:47:47,523 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-15 15:47:47,523 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-15 15:47:47,523 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2018-09-15 15:47:47,523 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 11 17) no Hoare annotation was computed. [2018-09-15 15:47:47,523 INFO L422 ceAbstractionStarter]: At program point L14(line 14) the Hoare annotation is: (= (mod main_~x~0 2) 0) [2018-09-15 15:47:47,524 INFO L426 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2018-09-15 15:47:47,524 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 11 17) no Hoare annotation was computed. [2018-09-15 15:47:47,524 INFO L426 ceAbstractionStarter]: For program point L13-1(lines 13 15) no Hoare annotation was computed. [2018-09-15 15:47:47,524 INFO L422 ceAbstractionStarter]: At program point L13-3(lines 13 15) the Hoare annotation is: (= (mod main_~x~0 2) 0) [2018-09-15 15:47:47,524 INFO L422 ceAbstractionStarter]: At program point L13-4(lines 13 15) the Hoare annotation is: (and (not (= main_~x~0 0)) (= (mod main_~x~0 2) 0)) [2018-09-15 15:47:47,525 INFO L426 ceAbstractionStarter]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2018-09-15 15:47:47,525 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-09-15 15:47:47,525 INFO L429 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2018-09-15 15:47:47,525 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2018-09-15 15:47:47,525 INFO L426 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-09-15 15:47:47,526 INFO L426 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-09-15 15:47:47,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 03:47:47 BoogieIcfgContainer [2018-09-15 15:47:47,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-15 15:47:47,535 INFO L168 Benchmark]: Toolchain (without parser) took 1976.87 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 742.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -735.1 MB). Peak memory consumption was 7.8 MB. Max. memory is 7.1 GB. [2018-09-15 15:47:47,538 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-15 15:47:47,539 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.47 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-15 15:47:47,542 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.46 ms. Allocated memory is still 1.6 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-15 15:47:47,543 INFO L168 Benchmark]: Boogie Preprocessor took 23.65 ms. Allocated memory is still 1.6 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-15 15:47:47,543 INFO L168 Benchmark]: RCFGBuilder took 525.66 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 742.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -787.6 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2018-09-15 15:47:47,544 INFO L168 Benchmark]: TraceAbstraction took 1153.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 42.0 MB). Peak memory consumption was 42.0 MB. Max. memory is 7.1 GB. [2018-09-15 15:47:47,553 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 243.47 ms. Allocated memory is still 1.6 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 23.46 ms. Allocated memory is still 1.6 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.65 ms. Allocated memory is still 1.6 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 525.66 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 742.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -787.6 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1153.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 42.0 MB). Peak memory consumption was 42.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 13]: Loop Invariant Derived loop invariant: x % 2 == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. SAFE Result, 1.0s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 32 SDtfs, 6 SDslu, 75 SDs, 0 SdLazy, 43 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 0.7756410256410255 AbsIntWeakeningRatio, 0.4230769230769231 AbsIntAvgWeakeningVarsNumRemoved, 0.23076923076923078 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 10 PreInvPairs, 12 NumberOfFragments, 26 HoareAnnotationTreeSize, 10 FomulaSimplifications, 10 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s 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/functions_true-unreach-call1_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-15_15-47-47-578.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/functions_true-unreach-call1_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-15_15-47-47-578.csv Received shutdown request...