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-invgen/half_2_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 17:54:26,729 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 17:54:26,731 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 17:54:26,748 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 17:54:26,749 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 17:54:26,751 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 17:54:26,753 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 17:54:26,756 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 17:54:26,758 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 17:54:26,761 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 17:54:26,764 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 17:54:26,764 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 17:54:26,765 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 17:54:26,766 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 17:54:26,777 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 17:54:26,778 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 17:54:26,782 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 17:54:26,784 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 17:54:26,786 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 17:54:26,791 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 17:54:26,792 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 17:54:26,794 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 17:54:26,799 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 17:54:26,800 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 17:54:26,800 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 17:54:26,801 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 17:54:26,803 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 17:54:26,804 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 17:54:26,806 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 17:54:26,807 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 17:54:26,808 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 17:54:26,809 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-11 17:54:26,814 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 [2018-09-11 17:54:26,833 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 17:54:26,834 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 17:54:26,835 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 17:54:26,835 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 17:54:26,835 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 17:54:26,835 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 17:54:26,836 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 17:54:26,836 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-11 17:54:26,836 INFO L133 SettingsManager]: * Abstract domain=CongruenceDomain [2018-09-11 17:54:26,836 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 17:54:26,837 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 17:54:26,837 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-11 17:54:26,838 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 17:54:26,838 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 17:54:26,838 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 17:54:26,839 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 17:54:26,839 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 17:54:26,839 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 17:54:26,839 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 17:54:26,839 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 17:54:26,840 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 17:54:26,840 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 17:54:26,840 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 17:54:26,840 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 17:54:26,841 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 17:54:26,841 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 17:54:26,841 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 17:54:26,841 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 17:54:26,842 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 17:54:26,842 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 17:54:26,842 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 17:54:26,842 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 17:54:26,842 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 17:54:26,843 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 17:54:26,896 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 17:54:26,911 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 17:54:26,917 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 17:54:26,919 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 17:54:26,920 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 17:54:26,920 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/half_2_true-unreach-call_true-termination.i [2018-09-11 17:54:27,307 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6b8e64d8/70ec5c89d72741429163da977a8b5f75/FLAG2ef27aab3 [2018-09-11 17:54:27,447 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 17:54:27,447 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/half_2_true-unreach-call_true-termination.i [2018-09-11 17:54:27,454 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6b8e64d8/70ec5c89d72741429163da977a8b5f75/FLAG2ef27aab3 [2018-09-11 17:54:27,468 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6b8e64d8/70ec5c89d72741429163da977a8b5f75 [2018-09-11 17:54:27,478 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 17:54:27,481 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 17:54:27,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 17:54:27,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 17:54:27,489 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 17:54:27,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 05:54:27" (1/1) ... [2018-09-11 17:54:27,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65ef364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:27, skipping insertion in model container [2018-09-11 17:54:27,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 05:54:27" (1/1) ... [2018-09-11 17:54:27,653 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 17:54:27,692 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 17:54:27,712 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 17:54:27,717 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 17:54:27,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:27 WrapperNode [2018-09-11 17:54:27,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 17:54:27,732 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 17:54:27,732 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 17:54:27,732 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 17:54:27,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:27" (1/1) ... [2018-09-11 17:54:27,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:27" (1/1) ... [2018-09-11 17:54:27,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 17:54:27,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 17:54:27,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 17:54:27,754 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 17:54:27,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:27" (1/1) ... [2018-09-11 17:54:27,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:27" (1/1) ... [2018-09-11 17:54:27,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:27" (1/1) ... [2018-09-11 17:54:27,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:27" (1/1) ... [2018-09-11 17:54:27,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:27" (1/1) ... [2018-09-11 17:54:27,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:27" (1/1) ... [2018-09-11 17:54:27,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:27" (1/1) ... [2018-09-11 17:54:27,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 17:54:27,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 17:54:27,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 17:54:27,785 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 17:54:27,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:27" (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 [2018-09-11 17:54:27,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 17:54:27,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 17:54:27,866 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_half___true_unreach_call_true_termination_i____VERIFIER_assert [2018-09-11 17:54:27,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_half___true_unreach_call_true_termination_i____VERIFIER_assert [2018-09-11 17:54:27,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 17:54:27,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 17:54:27,867 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 17:54:27,867 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 17:54:28,254 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 17:54:28,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 05:54:28 BoogieIcfgContainer [2018-09-11 17:54:28,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 17:54:28,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 17:54:28,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 17:54:28,260 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 17:54:28,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 05:54:27" (1/3) ... [2018-09-11 17:54:28,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139a26fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 05:54:28, skipping insertion in model container [2018-09-11 17:54:28,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:27" (2/3) ... [2018-09-11 17:54:28,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139a26fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 05:54:28, skipping insertion in model container [2018-09-11 17:54:28,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 05:54:28" (3/3) ... [2018-09-11 17:54:28,264 INFO L112 eAbstractionObserver]: Analyzing ICFG half_2_true-unreach-call_true-termination.i [2018-09-11 17:54:28,274 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 17:54:28,285 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 17:54:28,342 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 17:54:28,343 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 17:54:28,343 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 17:54:28,343 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 17:54:28,343 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 17:54:28,343 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 17:54:28,344 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 17:54:28,344 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 17:54:28,344 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 17:54:28,364 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-09-11 17:54:28,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-11 17:54:28,371 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 17:54:28,372 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 17:54:28,374 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_half___true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 17:54:28,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1251515193, now seen corresponding path program 1 times [2018-09-11 17:54:28,383 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 17:54:28,384 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-09-11 17:54:28,386 INFO L202 CegarAbsIntRunner]: [0], [1], [4], [6], [15], [19], [31], [33], [37], [43], [51], [52], [53], [55] [2018-09-11 17:54:28,419 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-11 17:54:28,419 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 17:54:28,487 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 17:54:28,489 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 5 variables. [2018-09-11 17:54:28,503 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 17:54:28,547 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 100% of their original sizes. [2018-09-11 17:54:28,548 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 17:54:28,550 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 17:54:28,551 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 17:54:28,552 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-11 17:54:28,552 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 17:54:28,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-11 17:54:28,562 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-11 17:54:28,563 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-11 17:54:28,565 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2018-09-11 17:54:28,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 17:54:28,586 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2018-09-11 17:54:28,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-11 17:54:28,587 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-09-11 17:54:28,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 17:54:28,599 INFO L225 Difference]: With dead ends: 40 [2018-09-11 17:54:28,599 INFO L226 Difference]: Without dead ends: 19 [2018-09-11 17:54:28,605 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-11 17:54:28,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-09-11 17:54:28,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-09-11 17:54:28,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-11 17:54:28,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-09-11 17:54:28,660 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2018-09-11 17:54:28,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 17:54:28,661 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-09-11 17:54:28,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-11 17:54:28,661 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-09-11 17:54:28,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-11 17:54:28,662 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 17:54:28,662 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 17:54:28,663 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_half___true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 17:54:28,663 INFO L82 PathProgramCache]: Analyzing trace with hash 129242268, now seen corresponding path program 1 times [2018-09-11 17:54:28,663 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 17:54:28,665 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-09-11 17:54:28,665 INFO L202 CegarAbsIntRunner]: [0], [1], [4], [6], [15], [19], [23], [27], [33], [37], [43], [51], [52], [53], [55] [2018-09-11 17:54:28,667 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-11 17:54:28,668 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 17:54:28,706 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-11 17:54:28,706 INFO L272 AbstractInterpreter]: Visited 15 different actions 15 times. Never merged. Never widened. Never found a fixpoint. Largest state had 5 variables. [2018-09-11 17:54:28,714 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-11 17:54:28,730 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-11 17:54:28,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 05:54:28 BoogieIcfgContainer [2018-09-11 17:54:28,731 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-11 17:54:28,732 INFO L168 Benchmark]: Toolchain (without parser) took 1253.75 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -743.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-09-11 17:54:28,734 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-11 17:54:28,735 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.28 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. [2018-09-11 17:54:28,736 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.74 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. [2018-09-11 17:54:28,736 INFO L168 Benchmark]: Boogie Preprocessor took 30.65 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. [2018-09-11 17:54:28,737 INFO L168 Benchmark]: RCFGBuilder took 470.64 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -785.4 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-09-11 17:54:28,738 INFO L168 Benchmark]: TraceAbstraction took 475.00 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: 31.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 7.1 GB. [2018-09-11 17:54:28,742 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 249.28 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 21.74 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 30.65 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 470.64 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -785.4 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 475.00 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: 31.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 5]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L11] int n,i,k; [L12] n = __VERIFIER_nondet_int() [L13] COND FALSE !(!(n <= 1000000)) [L14] k = n [L15] i = 0 [L16] COND FALSE !(i < n) [L20] int j = 0; [L21] COND TRUE j < n/2 [L22] CALL __VERIFIER_assert(k > 0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. UNKNOWN Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 26 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.6153846153846154 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 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/half_2_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-11_17-54-28-755.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/half_2_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-11_17-54-28-755.csv Received shutdown request...