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-crafted/simple_array_index_value_true-unreach-call1_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 17:54:24,804 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 17:54:24,807 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 17:54:24,819 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 17:54:24,819 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 17:54:24,820 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 17:54:24,821 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 17:54:24,823 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 17:54:24,825 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 17:54:24,826 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 17:54:24,827 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 17:54:24,827 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 17:54:24,828 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 17:54:24,829 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 17:54:24,830 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 17:54:24,831 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 17:54:24,832 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 17:54:24,834 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 17:54:24,836 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 17:54:24,838 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 17:54:24,839 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 17:54:24,840 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 17:54:24,843 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-11 17:54:24,852 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 17:54:24,867 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 17:54:24,867 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 17:54:24,868 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 17:54:24,869 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 17:54:24,869 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 17:54:24,869 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 17:54:24,869 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 17:54:24,869 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-11 17:54:24,870 INFO L133 SettingsManager]: * Abstract domain=CongruenceDomain [2018-09-11 17:54:24,870 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 17:54:24,870 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 17:54:24,870 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-11 17:54:24,871 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 17:54:24,871 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 17:54:24,871 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 17:54:24,871 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 17:54:24,872 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 17:54:24,872 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 17:54:24,872 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 17:54:24,872 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 17:54:24,872 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 17:54:24,873 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 17:54:24,873 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 17:54:24,873 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 17:54:24,873 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 17:54:24,873 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 17:54:24,874 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 17:54:24,874 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 17:54:24,874 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 17:54:24,874 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 17:54:24,874 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 17:54:24,875 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 17:54:24,875 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 17:54:24,875 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 17:54:24,927 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 17:54:24,940 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 17:54:24,944 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 17:54:24,945 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 17:54:24,946 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 17:54:24,947 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_true-unreach-call1_true-termination.i [2018-09-11 17:54:25,301 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/664e32637/1f0fe45af5394e169b953bc66a98028c/FLAG3074f499d [2018-09-11 17:54:25,483 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 17:54:25,484 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_true-unreach-call1_true-termination.i [2018-09-11 17:54:25,492 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/664e32637/1f0fe45af5394e169b953bc66a98028c/FLAG3074f499d [2018-09-11 17:54:25,510 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/664e32637/1f0fe45af5394e169b953bc66a98028c [2018-09-11 17:54:25,524 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 17:54:25,528 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 17:54:25,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 17:54:25,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 17:54:25,537 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 17:54:25,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 05:54:25" (1/1) ... [2018-09-11 17:54:25,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aecc83f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:25, skipping insertion in model container [2018-09-11 17:54:25,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 05:54:25" (1/1) ... [2018-09-11 17:54:25,723 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 17:54:25,793 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 17:54:25,813 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 17:54:25,824 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 17:54:25,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:25 WrapperNode [2018-09-11 17:54:25,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 17:54:25,842 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 17:54:25,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 17:54:25,842 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 17:54:25,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:25" (1/1) ... [2018-09-11 17:54:25,861 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:25" (1/1) ... [2018-09-11 17:54:25,869 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 17:54:25,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 17:54:25,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 17:54:25,870 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 17:54:25,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:25" (1/1) ... [2018-09-11 17:54:25,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:25" (1/1) ... [2018-09-11 17:54:25,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:25" (1/1) ... [2018-09-11 17:54:25,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:25" (1/1) ... [2018-09-11 17:54:25,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:25" (1/1) ... [2018-09-11 17:54:25,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:25" (1/1) ... [2018-09-11 17:54:25,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:25" (1/1) ... [2018-09-11 17:54:25,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 17:54:25,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 17:54:25,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 17:54:25,904 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 17:54:25,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:25" (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 17:54:25,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 17:54:25,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 17:54:25,987 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assert [2018-09-11 17:54:25,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assert [2018-09-11 17:54:25,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 17:54:25,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 17:54:25,988 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 17:54:25,988 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 17:54:26,389 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 17:54:26,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 05:54:26 BoogieIcfgContainer [2018-09-11 17:54:26,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 17:54:26,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 17:54:26,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 17:54:26,403 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 17:54:26,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 05:54:25" (1/3) ... [2018-09-11 17:54:26,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707e3fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 05:54:26, skipping insertion in model container [2018-09-11 17:54:26,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:25" (2/3) ... [2018-09-11 17:54:26,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707e3fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 05:54:26, skipping insertion in model container [2018-09-11 17:54:26,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 05:54:26" (3/3) ... [2018-09-11 17:54:26,414 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_true-unreach-call1_true-termination.i [2018-09-11 17:54:26,436 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 17:54:26,456 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 17:54:26,507 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 17:54:26,507 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 17:54:26,508 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 17:54:26,508 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 17:54:26,508 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 17:54:26,508 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 17:54:26,508 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 17:54:26,509 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 17:54:26,509 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 17:54:26,528 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-09-11 17:54:26,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-11 17:54:26,536 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 17:54:26,537 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 17:54:26,538 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 17:54:26,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1189535701, now seen corresponding path program 1 times [2018-09-11 17:54:26,547 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 17:54:26,549 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-09-11 17:54:26,551 INFO L202 CegarAbsIntRunner]: [0], [1], [4], [6], [15], [28], [30], [34], [39], [42], [53], [54], [55], [57] [2018-09-11 17:54:26,589 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-11 17:54:26,589 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 17:54:26,643 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 17:54:26,645 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Never found a fixpoint. Largest state had 2 variables. [2018-09-11 17:54:26,690 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 17:54:26,734 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 100% of their original sizes. [2018-09-11 17:54:26,734 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 17:54:26,737 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 17:54:26,738 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 17:54:26,738 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-11 17:54:26,739 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 17:54:26,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-11 17:54:26,752 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-11 17:54:26,753 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-11 17:54:26,756 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-09-11 17:54:26,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 17:54:26,777 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2018-09-11 17:54:26,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-11 17:54:26,778 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-09-11 17:54:26,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 17:54:26,788 INFO L225 Difference]: With dead ends: 42 [2018-09-11 17:54:26,789 INFO L226 Difference]: Without dead ends: 21 [2018-09-11 17:54:26,792 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 17:54:26,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-09-11 17:54:26,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-09-11 17:54:26,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-09-11 17:54:26,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2018-09-11 17:54:26,843 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 14 [2018-09-11 17:54:26,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 17:54:26,843 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2018-09-11 17:54:26,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-11 17:54:26,844 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2018-09-11 17:54:26,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-11 17:54:26,845 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 17:54:26,845 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 17:54:26,846 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 17:54:26,846 INFO L82 PathProgramCache]: Analyzing trace with hash -2089413066, now seen corresponding path program 1 times [2018-09-11 17:54:26,846 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 17:54:26,847 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-09-11 17:54:26,847 INFO L202 CegarAbsIntRunner]: [0], [1], [4], [6], [15], [19], [22], [30], [34], [39], [42], [53], [54], [55], [57] [2018-09-11 17:54:26,848 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-11 17:54:26,848 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 17:54:26,859 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 17:54:26,860 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 2 variables. [2018-09-11 17:54:26,873 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 17:54:26,881 INFO L224 lantSequenceWeakener]: Could never weaken! [2018-09-11 17:54:26,881 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 17:54:26,887 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 17:54:26,887 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 17:54:26,888 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-11 17:54:26,888 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 17:54:26,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-11 17:54:26,889 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-11 17:54:26,889 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-11 17:54:26,889 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 3 states. [2018-09-11 17:54:26,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 17:54:26,981 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2018-09-11 17:54:26,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-11 17:54:26,984 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-09-11 17:54:26,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 17:54:26,985 INFO L225 Difference]: With dead ends: 42 [2018-09-11 17:54:26,985 INFO L226 Difference]: Without dead ends: 29 [2018-09-11 17:54:26,988 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-11 17:54:26,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-09-11 17:54:26,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2018-09-11 17:54:26,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-09-11 17:54:26,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2018-09-11 17:54:26,999 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 15 [2018-09-11 17:54:26,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 17:54:26,999 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2018-09-11 17:54:26,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-11 17:54:27,000 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2018-09-11 17:54:27,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-11 17:54:27,000 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 17:54:27,001 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 17:54:27,001 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 17:54:27,001 INFO L82 PathProgramCache]: Analyzing trace with hash -2119982969, now seen corresponding path program 1 times [2018-09-11 17:54:27,002 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 17:54:27,002 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2018-09-11 17:54:27,002 INFO L202 CegarAbsIntRunner]: [0], [1], [4], [6], [15], [19], [22], [24], [26], [30], [34], [39], [42], [53], [54], [55], [57] [2018-09-11 17:54:27,003 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-11 17:54:27,004 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 17:54:27,039 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-11 17:54:27,039 INFO L272 AbstractInterpreter]: Visited 17 different actions 25 times. Merged at 3 different actions 6 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 3 variables. [2018-09-11 17:54:27,068 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-11 17:54:27,086 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-11 17:54:27,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 05:54:27 BoogieIcfgContainer [2018-09-11 17:54:27,087 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-11 17:54:27,088 INFO L168 Benchmark]: Toolchain (without parser) took 1563.83 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 709.9 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -706.1 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2018-09-11 17:54:27,090 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. [2018-09-11 17:54:27,091 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.03 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 17:54:27,092 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.42 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 17:54:27,093 INFO L168 Benchmark]: Boogie Preprocessor took 33.93 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 17:54:27,093 INFO L168 Benchmark]: RCFGBuilder took 486.33 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 709.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -761.8 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2018-09-11 17:54:27,094 INFO L168 Benchmark]: TraceAbstraction took 696.22 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. [2018-09-11 17:54:27,099 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 312.03 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 27.42 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 33.93 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 486.33 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 709.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -761.8 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 696.22 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 11]: 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: [L18] unsigned int array[1000]; [L19] unsigned int index; [L21] index = 0 [L21] COND TRUE index < 1000 [L22] array[index] = (index % 2) [L21] index++ [L21] index++ [L21] COND FALSE !(index < 1000) [L25] index = 0 [L25] COND TRUE index < 1000 [L26] COND TRUE index % 2 == 0 [L27] CALL __VERIFIER_assert(array[index] == 0) [L10] COND TRUE !(cond) [L11] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. UNKNOWN Result, 0.5s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 48 SDtfs, 4 SDslu, 15 SDs, 0 SdLazy, 12 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 1.0 AbsIntWeakeningRatio, 0.37037037037037035 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 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/simple_array_index_value_true-unreach-call1_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-11_17-54-27-125.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/simple_array_index_value_true-unreach-call1_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-11_17-54-27-125.csv Received shutdown request...