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_INT-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-lit/gj2007_true-unreach-call_true-termination.c.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 13:31:13,842 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 13:31:13,844 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 13:31:13,857 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 13:31:13,857 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 13:31:13,859 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 13:31:13,860 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 13:31:13,862 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 13:31:13,863 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 13:31:13,864 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 13:31:13,865 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 13:31:13,865 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 13:31:13,866 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 13:31:13,867 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 13:31:13,868 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 13:31:13,869 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 13:31:13,870 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 13:31:13,872 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 13:31:13,874 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 13:31:13,875 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 13:31:13,877 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 13:31:13,878 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 13:31:13,884 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 13:31:13,884 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 13:31:13,886 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 13:31:13,887 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 13:31:13,888 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 13:31:13,889 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 13:31:13,892 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 13:31:13,893 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 13:31:13,894 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 13:31:13,894 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-11 13:31:13,898 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf [2018-09-11 13:31:13,927 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 13:31:13,928 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 13:31:13,930 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 13:31:13,930 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 13:31:13,930 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 13:31:13,930 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 13:31:13,931 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-11 13:31:13,931 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 13:31:13,931 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-11 13:31:13,931 INFO L133 SettingsManager]: * Abstract domain=IntervalDomain [2018-09-11 13:31:13,931 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 13:31:13,932 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 13:31:13,932 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 13:31:13,933 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 13:31:13,933 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 13:31:13,933 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 13:31:13,934 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 13:31:13,934 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 13:31:13,934 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 13:31:13,934 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 13:31:13,935 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 13:31:13,936 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 13:31:13,936 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 13:31:13,936 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 13:31:13,936 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 13:31:13,937 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 13:31:13,937 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 13:31:13,937 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 13:31:13,937 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 13:31:13,937 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 13:31:13,938 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 13:31:13,938 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 13:31:13,938 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 13:31:13,938 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 13:31:13,990 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 13:31:14,005 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 13:31:14,013 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 13:31:14,014 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 13:31:14,015 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 13:31:14,016 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007_true-unreach-call_true-termination.c.i [2018-09-11 13:31:14,356 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b613bcf82/bbff63d4354a4f89bd28e0550b76ac87/FLAG71c9cb9ec [2018-09-11 13:31:14,534 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 13:31:14,535 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007_true-unreach-call_true-termination.c.i [2018-09-11 13:31:14,543 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b613bcf82/bbff63d4354a4f89bd28e0550b76ac87/FLAG71c9cb9ec [2018-09-11 13:31:14,567 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b613bcf82/bbff63d4354a4f89bd28e0550b76ac87 [2018-09-11 13:31:14,580 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 13:31:14,583 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 13:31:14,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 13:31:14,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 13:31:14,597 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 13:31:14,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 01:31:14" (1/1) ... [2018-09-11 13:31:14,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75dc4ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:31:14, skipping insertion in model container [2018-09-11 13:31:14,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 01:31:14" (1/1) ... [2018-09-11 13:31:14,760 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 13:31:14,800 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 13:31:14,820 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 13:31:14,825 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 13:31:14,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:31:14 WrapperNode [2018-09-11 13:31:14,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 13:31:14,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 13:31:14,840 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 13:31:14,840 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 13:31:14,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:31:14" (1/1) ... [2018-09-11 13:31:14,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:31:14" (1/1) ... [2018-09-11 13:31:14,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 13:31:14,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 13:31:14,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 13:31:14,864 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 13:31:14,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:31:14" (1/1) ... [2018-09-11 13:31:14,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:31:14" (1/1) ... [2018-09-11 13:31:14,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:31:14" (1/1) ... [2018-09-11 13:31:14,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:31:14" (1/1) ... [2018-09-11 13:31:14,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:31:14" (1/1) ... [2018-09-11 13:31:14,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:31:14" (1/1) ... [2018-09-11 13:31:14,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:31:14" (1/1) ... [2018-09-11 13:31:14,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 13:31:14,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 13:31:14,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 13:31:14,885 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 13:31:14,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:31:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 13:31:14,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 13:31:14,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 13:31:14,960 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_lit_gj_____true_unreach_call_true_termination_c_i____VERIFIER_assert [2018-09-11 13:31:14,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_lit_gj_____true_unreach_call_true_termination_c_i____VERIFIER_assert [2018-09-11 13:31:14,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 13:31:14,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 13:31:14,960 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 13:31:14,961 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 13:31:15,243 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 13:31:15,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 01:31:15 BoogieIcfgContainer [2018-09-11 13:31:15,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 13:31:15,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 13:31:15,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 13:31:15,248 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 13:31:15,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 01:31:14" (1/3) ... [2018-09-11 13:31:15,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7224298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 01:31:15, skipping insertion in model container [2018-09-11 13:31:15,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:31:14" (2/3) ... [2018-09-11 13:31:15,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7224298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 01:31:15, skipping insertion in model container [2018-09-11 13:31:15,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 01:31:15" (3/3) ... [2018-09-11 13:31:15,252 INFO L112 eAbstractionObserver]: Analyzing ICFG gj2007_true-unreach-call_true-termination.c.i [2018-09-11 13:31:15,262 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 13:31:15,269 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 13:31:15,321 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 13:31:15,322 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 13:31:15,322 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 13:31:15,322 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 13:31:15,322 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 13:31:15,322 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 13:31:15,323 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 13:31:15,323 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 13:31:15,323 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 13:31:15,343 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-09-11 13:31:15,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-11 13:31:15,350 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 13:31:15,351 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 13:31:15,353 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_lit_gj_____true_unreach_call_true_termination_c_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 13:31:15,359 INFO L82 PathProgramCache]: Analyzing trace with hash 177171015, now seen corresponding path program 1 times [2018-09-11 13:31:15,362 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 13:31:15,363 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 11 with the following transitions: [2018-09-11 13:31:15,365 INFO L202 CegarAbsIntRunner]: [0], [1], [4], [6], [15], [33], [38], [39], [40], [42] [2018-09-11 13:31:15,399 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-11 13:31:15,400 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 13:31:15,446 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 13:31:15,447 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 13:31:15,480 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 13:31:15,542 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 50% of their original sizes. [2018-09-11 13:31:15,542 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 13:31:15,574 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 13:31:15,576 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 13:31:15,576 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-11 13:31:15,576 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 13:31:15,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-11 13:31:15,589 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-11 13:31:15,590 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-11 13:31:15,593 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2018-09-11 13:31:15,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 13:31:15,652 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2018-09-11 13:31:15,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-11 13:31:15,654 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-09-11 13:31:15,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 13:31:15,665 INFO L225 Difference]: With dead ends: 39 [2018-09-11 13:31:15,666 INFO L226 Difference]: Without dead ends: 17 [2018-09-11 13:31:15,670 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-11 13:31:15,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-09-11 13:31:15,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 13. [2018-09-11 13:31:15,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-09-11 13:31:15,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-09-11 13:31:15,728 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-09-11 13:31:15,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 13:31:15,729 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-09-11 13:31:15,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-11 13:31:15,729 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-09-11 13:31:15,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-11 13:31:15,730 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 13:31:15,730 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 13:31:15,731 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_lit_gj_____true_unreach_call_true_termination_c_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 13:31:15,731 INFO L82 PathProgramCache]: Analyzing trace with hash 780197648, now seen corresponding path program 1 times [2018-09-11 13:31:15,731 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 13:31:15,732 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 12 with the following transitions: [2018-09-11 13:31:15,732 INFO L202 CegarAbsIntRunner]: [0], [1], [4], [6], [15], [19], [23], [38], [39], [40], [42] [2018-09-11 13:31:15,733 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-11 13:31:15,734 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 13:31:15,747 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 13:31:15,748 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 13:31:15,764 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 13:31:15,774 INFO L224 lantSequenceWeakener]: Could never weaken! [2018-09-11 13:31:15,774 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 13:31:15,793 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 13:31:15,794 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 13:31:15,794 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-11 13:31:15,794 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 13:31:15,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-11 13:31:15,795 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-11 13:31:15,795 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-11 13:31:15,796 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 3 states. [2018-09-11 13:31:15,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 13:31:15,824 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2018-09-11 13:31:15,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-11 13:31:15,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-09-11 13:31:15,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 13:31:15,827 INFO L225 Difference]: With dead ends: 24 [2018-09-11 13:31:15,827 INFO L226 Difference]: Without dead ends: 16 [2018-09-11 13:31:15,828 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 10 GetRequests, 9 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 13:31:15,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-09-11 13:31:15,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-09-11 13:31:15,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-09-11 13:31:15,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2018-09-11 13:31:15,835 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2018-09-11 13:31:15,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 13:31:15,836 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2018-09-11 13:31:15,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-11 13:31:15,836 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2018-09-11 13:31:15,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-11 13:31:15,837 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 13:31:15,837 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 13:31:15,838 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_lit_gj_____true_unreach_call_true_termination_c_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 13:31:15,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1310425472, now seen corresponding path program 1 times [2018-09-11 13:31:15,838 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 13:31:15,838 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-09-11 13:31:15,839 INFO L202 CegarAbsIntRunner]: [0], [1], [4], [6], [15], [19], [23], [25], [28], [38], [39], [40], [42] [2018-09-11 13:31:15,840 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-11 13:31:15,840 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 13:31:15,865 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 13:31:15,865 INFO L272 AbstractInterpreter]: Visited 9 different actions 29 times. Merged at 3 different actions 15 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 2 variables. [2018-09-11 13:31:15,883 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 13:31:15,897 INFO L224 lantSequenceWeakener]: Could never weaken! [2018-09-11 13:31:15,901 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 13:31:15,920 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 13:31:15,920 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 13:31:15,921 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-11 13:31:15,921 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 13:31:15,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-11 13:31:15,922 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-11 13:31:15,922 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-11 13:31:15,922 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 3 states. [2018-09-11 13:31:15,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 13:31:15,974 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2018-09-11 13:31:15,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-11 13:31:15,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-09-11 13:31:15,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 13:31:15,978 INFO L225 Difference]: With dead ends: 24 [2018-09-11 13:31:15,978 INFO L226 Difference]: Without dead ends: 19 [2018-09-11 13:31:15,979 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 13 GetRequests, 12 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 13:31:15,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-09-11 13:31:15,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-09-11 13:31:15,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-11 13:31:15,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-09-11 13:31:15,990 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 14 [2018-09-11 13:31:15,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 13:31:15,990 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-09-11 13:31:15,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-11 13:31:15,993 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-09-11 13:31:15,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-11 13:31:15,994 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 13:31:15,994 INFO L376 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 13:31:15,994 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_lit_gj_____true_unreach_call_true_termination_c_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 13:31:15,995 INFO L82 PathProgramCache]: Analyzing trace with hash 31973266, now seen corresponding path program 1 times [2018-09-11 13:31:15,995 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 13:31:15,995 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2018-09-11 13:31:15,997 INFO L202 CegarAbsIntRunner]: [0], [1], [4], [6], [15], [19], [23], [25], [28], [30], [38], [39], [40], [42] [2018-09-11 13:31:15,999 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-11 13:31:15,999 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown