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-industry-pattern/nested_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 15:48:04,735 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 15:48:04,737 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 15:48:04,750 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 15:48:04,750 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 15:48:04,751 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 15:48:04,753 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 15:48:04,754 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 15:48:04,756 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 15:48:04,757 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 15:48:04,758 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 15:48:04,758 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 15:48:04,759 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 15:48:04,760 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 15:48:04,761 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 15:48:04,762 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 15:48:04,763 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 15:48:04,765 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 15:48:04,767 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 15:48:04,769 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 15:48:04,770 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 15:48:04,775 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 15:48:04,779 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-15 15:48:04,779 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-15 15:48:04,780 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-15 15:48:04,784 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-15 15:48:04,785 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-15 15:48:04,788 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-15 15:48:04,788 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-15 15:48:04,792 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-15 15:48:04,793 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-15 15:48:04,793 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-15 15:48:04,794 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-15 15:48:04,794 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-15 15:48:04,797 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-15 15:48:04,800 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-15 15:48:04,800 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 15:48:04,832 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 15:48:04,832 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 15:48:04,835 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 15:48:04,836 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 15:48:04,836 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 15:48:04,836 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 15:48:04,836 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 15:48:04,836 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-15 15:48:04,837 INFO L133 SettingsManager]: * Abstract domain=CongruenceDomain [2018-09-15 15:48:04,837 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 15:48:04,837 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 15:48:04,837 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-15 15:48:04,839 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 15:48:04,840 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 15:48:04,840 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 15:48:04,840 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 15:48:04,840 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 15:48:04,843 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 15:48:04,843 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 15:48:04,843 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 15:48:04,844 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 15:48:04,844 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 15:48:04,844 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 15:48:04,845 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 15:48:04,845 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 15:48:04,845 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 15:48:04,845 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 15:48:04,846 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 15:48:04,846 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 15:48:04,846 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 15:48:04,846 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 15:48:04,846 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 15:48:04,848 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 15:48:04,848 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 15:48:04,915 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 15:48:04,929 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 15:48:04,933 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 15:48:04,934 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 15:48:04,935 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 15:48:04,936 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/nested_true-unreach-call.c [2018-09-15 15:48:05,296 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c5d61563/5077a95b0a5c47ac9bde43502c0ccbcf/FLAG79df12968 [2018-09-15 15:48:05,420 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 15:48:05,421 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/nested_true-unreach-call.c [2018-09-15 15:48:05,427 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c5d61563/5077a95b0a5c47ac9bde43502c0ccbcf/FLAG79df12968 [2018-09-15 15:48:05,442 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c5d61563/5077a95b0a5c47ac9bde43502c0ccbcf [2018-09-15 15:48:05,456 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 15:48:05,459 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 15:48:05,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 15:48:05,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 15:48:05,467 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 15:48:05,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 03:48:05" (1/1) ... [2018-09-15 15:48:05,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2abf5fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:48:05, skipping insertion in model container [2018-09-15 15:48:05,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 03:48:05" (1/1) ... [2018-09-15 15:48:05,482 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 15:48:05,758 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 15:48:05,775 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 15:48:05,782 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 15:48:05,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:48:05 WrapperNode [2018-09-15 15:48:05,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 15:48:05,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 15:48:05,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 15:48:05,796 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 15:48:05,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:48:05" (1/1) ... [2018-09-15 15:48:05,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:48:05" (1/1) ... [2018-09-15 15:48:05,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 15:48:05,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 15:48:05,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 15:48:05,820 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 15:48:05,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:48:05" (1/1) ... [2018-09-15 15:48:05,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:48:05" (1/1) ... [2018-09-15 15:48:05,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:48:05" (1/1) ... [2018-09-15 15:48:05,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:48:05" (1/1) ... [2018-09-15 15:48:05,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:48:05" (1/1) ... [2018-09-15 15:48:05,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:48:05" (1/1) ... [2018-09-15 15:48:05,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:48:05" (1/1) ... [2018-09-15 15:48:05,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 15:48:05,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 15:48:05,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 15:48:05,852 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 15:48:05,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:48:05" (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 15:48:05,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 15:48:05,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 15:48:05,917 INFO L130 BoogieDeclarations]: Found specification of procedure nondet [2018-09-15 15:48:05,917 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet [2018-09-15 15:48:05,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 15:48:05,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 15:48:05,918 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 15:48:05,918 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 15:48:05,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-15 15:48:05,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-15 15:48:06,330 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 15:48:06,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 03:48:06 BoogieIcfgContainer [2018-09-15 15:48:06,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 15:48:06,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 15:48:06,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 15:48:06,335 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 15:48:06,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 03:48:05" (1/3) ... [2018-09-15 15:48:06,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16978067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 03:48:06, skipping insertion in model container [2018-09-15 15:48:06,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:48:05" (2/3) ... [2018-09-15 15:48:06,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16978067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 03:48:06, skipping insertion in model container [2018-09-15 15:48:06,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 03:48:06" (3/3) ... [2018-09-15 15:48:06,339 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_true-unreach-call.c [2018-09-15 15:48:06,350 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 15:48:06,358 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 15:48:06,416 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 15:48:06,417 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 15:48:06,417 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 15:48:06,417 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 15:48:06,418 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 15:48:06,418 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 15:48:06,418 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 15:48:06,418 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 15:48:06,418 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 15:48:06,438 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-09-15 15:48:06,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-15 15:48:06,448 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:48:06,449 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 15:48:06,451 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:48:06,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1030098894, now seen corresponding path program 1 times [2018-09-15 15:48:06,460 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:48:06,461 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-09-15 15:48:06,466 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [8], [12], [18], [36], [40], [48], [55], [58], [60], [66], [67], [68], [70], [71], [72] [2018-09-15 15:48:06,503 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:48:06,503 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:48:06,578 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:48:06,579 INFO L272 AbstractInterpreter]: Visited 13 different actions 13 times. Never merged. Never widened. Never found a fixpoint. Largest state had 7 variables. [2018-09-15 15:48:06,595 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:48:06,642 INFO L232 lantSequenceWeakener]: Weakened 11 states. On average, predicates are now at 85.45% of their original sizes. [2018-09-15 15:48:06,643 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:48:06,669 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:48:06,671 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:48:06,672 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-15 15:48:06,672 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:48:06,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-15 15:48:06,682 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-15 15:48:06,683 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-15 15:48:06,685 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 4 states. [2018-09-15 15:48:06,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:48:06,796 INFO L93 Difference]: Finished difference Result 55 states and 80 transitions. [2018-09-15 15:48:06,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-15 15:48:06,798 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-09-15 15:48:06,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:48:06,808 INFO L225 Difference]: With dead ends: 55 [2018-09-15 15:48:06,808 INFO L226 Difference]: Without dead ends: 36 [2018-09-15 15:48:06,812 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-15 15:48:06,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-09-15 15:48:06,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2018-09-15 15:48:06,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-09-15 15:48:06,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2018-09-15 15:48:06,852 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 19 [2018-09-15 15:48:06,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:48:06,853 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2018-09-15 15:48:06,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-15 15:48:06,853 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2018-09-15 15:48:06,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-15 15:48:06,854 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:48:06,855 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 15:48:06,855 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:48:06,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1045124110, now seen corresponding path program 1 times [2018-09-15 15:48:06,856 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:48:06,856 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-09-15 15:48:06,856 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [8], [12], [18], [22], [25], [27], [32], [34], [40], [48], [55], [58], [60], [66], [67], [68], [70], [71], [72] [2018-09-15 15:48:06,858 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:48:06,858 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:48:06,880 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:48:06,881 INFO L272 AbstractInterpreter]: Visited 18 different actions 28 times. Merged at 4 different actions 8 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 8 variables. [2018-09-15 15:48:06,903 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:48:06,922 INFO L232 lantSequenceWeakener]: Weakened 17 states. On average, predicates are now at 64.12% of their original sizes. [2018-09-15 15:48:06,923 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:48:06,962 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:48:06,962 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:48:06,962 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-15 15:48:06,962 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:48:06,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-15 15:48:06,963 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-15 15:48:06,964 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-15 15:48:06,964 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2018-09-15 15:48:07,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:48:07,057 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2018-09-15 15:48:07,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-15 15:48:07,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-09-15 15:48:07,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:48:07,061 INFO L225 Difference]: With dead ends: 54 [2018-09-15 15:48:07,062 INFO L226 Difference]: Without dead ends: 39 [2018-09-15 15:48:07,065 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-15 15:48:07,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-09-15 15:48:07,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2018-09-15 15:48:07,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-09-15 15:48:07,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2018-09-15 15:48:07,076 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 24 [2018-09-15 15:48:07,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:48:07,077 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2018-09-15 15:48:07,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-15 15:48:07,077 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2018-09-15 15:48:07,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-15 15:48:07,078 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:48:07,078 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 15:48:07,079 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:48:07,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1102382412, now seen corresponding path program 1 times [2018-09-15 15:48:07,079 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:48:07,079 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-09-15 15:48:07,081 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [8], [12], [18], [22], [25], [27], [32], [34], [42], [48], [55], [58], [60], [66], [67], [68], [70], [71], [72] [2018-09-15 15:48:07,082 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:48:07,082 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:48:07,103 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-15 15:48:07,103 INFO L272 AbstractInterpreter]: Visited 23 different actions 33 times. Merged at 4 different actions 8 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 8 variables. [2018-09-15 15:48:07,130 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-15 15:48:07,148 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-15 15:48:07,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 03:48:07 BoogieIcfgContainer [2018-09-15 15:48:07,149 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-15 15:48:07,149 INFO L168 Benchmark]: Toolchain (without parser) took 1693.08 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 687.9 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -671.4 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2018-09-15 15:48:07,152 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-15 15:48:07,152 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-15 15:48:07,153 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.52 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-15 15:48:07,154 INFO L168 Benchmark]: Boogie Preprocessor took 31.13 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-15 15:48:07,154 INFO L168 Benchmark]: RCFGBuilder took 479.52 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 687.9 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -729.6 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2018-09-15 15:48:07,156 INFO L168 Benchmark]: TraceAbstraction took 816.83 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB. [2018-09-15 15:48:07,161 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 335.63 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 23.52 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 31.13 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 479.52 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 687.9 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -729.6 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 816.83 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: 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: [L7] int last ; [L22] CALL, EXPR nondet() [L17] int x; [L18] RET return x; [L22] EXPR nondet() [L22] last = nondet() [L23] int a=0,b=0,c=0,st=0; [L23] int a=0,b=0,c=0,st=0; [L23] int a=0,b=0,c=0,st=0; [L23] int a=0,b=0,c=0,st=0; [L24] COND TRUE 1 [L25] st=1 [L26] c=0 [L26] COND TRUE c<200000 [L27] COND FALSE !(c==last) [L26] c++ [L26] c++ [L26] COND FALSE !(c<200000) [L28] COND FALSE !(st==0 && c==last+1) [L30] a+=2 [L30] b+=2 [L31] COND FALSE !(c==last && st==0) [L33] CALL __VERIFIER_assert(a==b && c==200000) [L9] COND TRUE !(cond) [L10] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. UNKNOWN Result, 0.7s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 50 SDtfs, 27 SDslu, 76 SDs, 0 SdLazy, 33 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.7792682926829269 AbsIntWeakeningRatio, 0.6585365853658537 AbsIntAvgWeakeningVarsNumRemoved, 0.7317073170731707 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 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/nested_true-unreach-call.c_svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-15_15-48-07-175.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested_true-unreach-call.c_svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-15_15-48-07-175.csv Received shutdown request...