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/loops/eureka_01_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 17:54:05,723 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 17:54:05,725 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 17:54:05,737 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 17:54:05,737 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 17:54:05,739 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 17:54:05,740 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 17:54:05,742 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 17:54:05,744 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 17:54:05,745 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 17:54:05,746 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 17:54:05,746 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 17:54:05,747 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 17:54:05,748 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 17:54:05,750 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 17:54:05,751 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 17:54:05,751 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 17:54:05,753 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 17:54:05,756 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 17:54:05,758 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 17:54:05,759 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 17:54:05,761 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 17:54:05,764 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 17:54:05,764 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 17:54:05,764 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 17:54:05,765 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 17:54:05,767 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 17:54:05,767 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 17:54:05,768 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 17:54:05,770 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 17:54:05,770 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 17:54:05,771 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-11 17:54:05,776 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 17:54:05,807 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 17:54:05,807 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 17:54:05,810 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 17:54:05,810 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 17:54:05,810 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 17:54:05,811 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 17:54:05,811 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 17:54:05,811 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-11 17:54:05,811 INFO L133 SettingsManager]: * Abstract domain=CongruenceDomain [2018-09-11 17:54:05,811 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 17:54:05,812 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 17:54:05,812 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-11 17:54:05,816 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 17:54:05,816 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 17:54:05,817 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 17:54:05,817 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 17:54:05,817 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 17:54:05,817 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 17:54:05,817 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 17:54:05,818 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 17:54:05,818 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 17:54:05,818 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 17:54:05,818 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 17:54:05,818 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 17:54:05,818 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 17:54:05,819 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 17:54:05,819 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 17:54:05,819 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 17:54:05,819 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 17:54:05,823 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 17:54:05,823 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 17:54:05,823 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 17:54:05,823 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 17:54:05,824 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 17:54:05,893 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 17:54:05,906 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 17:54:05,910 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 17:54:05,912 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 17:54:05,912 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 17:54:05,914 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/eureka_01_true-unreach-call.i [2018-09-11 17:54:06,271 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e2702797/c89d62e5e9f2441cacc81fb0db2d986a/FLAG29ca4f0d0 [2018-09-11 17:54:06,455 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 17:54:06,456 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_01_true-unreach-call.i [2018-09-11 17:54:06,464 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e2702797/c89d62e5e9f2441cacc81fb0db2d986a/FLAG29ca4f0d0 [2018-09-11 17:54:06,481 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e2702797/c89d62e5e9f2441cacc81fb0db2d986a [2018-09-11 17:54:06,492 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 17:54:06,495 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 17:54:06,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 17:54:06,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 17:54:06,503 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 17:54:06,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 05:54:06" (1/1) ... [2018-09-11 17:54:06,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61217965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:06, skipping insertion in model container [2018-09-11 17:54:06,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 05:54:06" (1/1) ... [2018-09-11 17:54:06,669 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 17:54:06,740 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 17:54:06,763 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 17:54:06,806 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 17:54:06,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:06 WrapperNode [2018-09-11 17:54:06,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 17:54:06,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 17:54:06,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 17:54:06,842 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 17:54:06,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:06" (1/1) ... [2018-09-11 17:54:06,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:06" (1/1) ... [2018-09-11 17:54:06,871 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 17:54:06,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 17:54:06,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 17:54:06,872 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 17:54:06,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:06" (1/1) ... [2018-09-11 17:54:06,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:06" (1/1) ... [2018-09-11 17:54:06,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:06" (1/1) ... [2018-09-11 17:54:06,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:06" (1/1) ... [2018-09-11 17:54:06,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:06" (1/1) ... [2018-09-11 17:54:06,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:06" (1/1) ... [2018-09-11 17:54:06,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:06" (1/1) ... [2018-09-11 17:54:06,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 17:54:06,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 17:54:06,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 17:54:06,935 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 17:54:06,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:06" (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 17:54:07,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 17:54:07,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 17:54:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assert [2018-09-11 17:54:07,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assert [2018-09-11 17:54:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 17:54:07,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 17:54:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 17:54:07,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 17:54:07,687 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 17:54:07,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 05:54:07 BoogieIcfgContainer [2018-09-11 17:54:07,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 17:54:07,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 17:54:07,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 17:54:07,692 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 17:54:07,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 05:54:06" (1/3) ... [2018-09-11 17:54:07,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@461452e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 05:54:07, skipping insertion in model container [2018-09-11 17:54:07,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:06" (2/3) ... [2018-09-11 17:54:07,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@461452e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 05:54:07, skipping insertion in model container [2018-09-11 17:54:07,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 05:54:07" (3/3) ... [2018-09-11 17:54:07,696 INFO L112 eAbstractionObserver]: Analyzing ICFG eureka_01_true-unreach-call.i [2018-09-11 17:54:07,706 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 17:54:07,724 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 17:54:07,778 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 17:54:07,779 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 17:54:07,779 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 17:54:07,779 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 17:54:07,779 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 17:54:07,779 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 17:54:07,779 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 17:54:07,779 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 17:54:07,780 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 17:54:07,797 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2018-09-11 17:54:07,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-11 17:54:07,807 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 17:54:07,808 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 17:54:07,811 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 17:54:07,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1725340710, now seen corresponding path program 1 times [2018-09-11 17:54:07,821 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 17:54:07,822 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2018-09-11 17:54:07,826 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [7], [16], [34], [36], [67], [69], [86], [88], [92], [97], [106], [107], [108], [110] [2018-09-11 17:54:07,862 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-11 17:54:07,862 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 17:54:07,921 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 17:54:07,922 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 13 variables. [2018-09-11 17:54:07,948 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 17:54:07,988 INFO L232 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2018-09-11 17:54:07,989 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 17:54:08,018 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 17:54:08,020 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 17:54:08,020 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-11 17:54:08,020 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 17:54:08,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-11 17:54:08,034 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-11 17:54:08,035 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-11 17:54:08,037 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states. [2018-09-11 17:54:08,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 17:54:08,145 INFO L93 Difference]: Finished difference Result 68 states and 92 transitions. [2018-09-11 17:54:08,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-11 17:54:08,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-09-11 17:54:08,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 17:54:08,155 INFO L225 Difference]: With dead ends: 68 [2018-09-11 17:54:08,155 INFO L226 Difference]: Without dead ends: 34 [2018-09-11 17:54:08,160 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 17 GetRequests, 16 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 17:54:08,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-09-11 17:54:08,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-09-11 17:54:08,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-09-11 17:54:08,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2018-09-11 17:54:08,195 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 18 [2018-09-11 17:54:08,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 17:54:08,195 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2018-09-11 17:54:08,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-11 17:54:08,196 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2018-09-11 17:54:08,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-11 17:54:08,197 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 17:54:08,197 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 17:54:08,198 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 17:54:08,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1379623414, now seen corresponding path program 1 times [2018-09-11 17:54:08,198 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 17:54:08,198 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 22 with the following transitions: [2018-09-11 17:54:08,199 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [7], [16], [20], [23], [36], [40], [43], [69], [73], [76], [88], [92], [97], [106], [107], [108], [110] [2018-09-11 17:54:08,200 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-11 17:54:08,201 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 17:54:08,214 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 17:54:08,214 INFO L272 AbstractInterpreter]: Visited 8 different actions 8 times. Never merged. Never widened. Never found a fixpoint. Largest state had 13 variables. [2018-09-11 17:54:08,233 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 17:54:08,245 INFO L232 lantSequenceWeakener]: Weakened 6 states. On average, predicates are now at 83.33% of their original sizes. [2018-09-11 17:54:08,245 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 17:54:08,256 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 17:54:08,256 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 17:54:08,256 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-11 17:54:08,256 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 17:54:08,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-11 17:54:08,257 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-11 17:54:08,258 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-11 17:54:08,258 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 3 states. [2018-09-11 17:54:08,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 17:54:08,364 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2018-09-11 17:54:08,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-11 17:54:08,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-09-11 17:54:08,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 17:54:08,367 INFO L225 Difference]: With dead ends: 62 [2018-09-11 17:54:08,367 INFO L226 Difference]: Without dead ends: 38 [2018-09-11 17:54:08,370 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 20 GetRequests, 19 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 17:54:08,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-09-11 17:54:08,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2018-09-11 17:54:08,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-09-11 17:54:08,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-09-11 17:54:08,381 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 21 [2018-09-11 17:54:08,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 17:54:08,382 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-09-11 17:54:08,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-11 17:54:08,382 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-09-11 17:54:08,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-09-11 17:54:08,383 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 17:54:08,383 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 17:54:08,384 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 17:54:08,384 INFO L82 PathProgramCache]: Analyzing trace with hash 762401953, now seen corresponding path program 1 times [2018-09-11 17:54:08,384 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 17:54:08,384 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 26 with the following transitions: [2018-09-11 17:54:08,385 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [7], [16], [20], [23], [25], [28], [32], [36], [40], [43], [69], [73], [76], [88], [92], [97], [106], [107], [108], [110] [2018-09-11 17:54:08,387 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-11 17:54:08,388 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 17:54:08,401 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 17:54:08,402 INFO L272 AbstractInterpreter]: Visited 11 different actions 15 times. Merged at 3 different actions 3 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 14 variables. [2018-09-11 17:54:08,424 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 17:54:08,460 INFO L232 lantSequenceWeakener]: Weakened 10 states. On average, predicates are now at 65% of their original sizes. [2018-09-11 17:54:08,461 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 17:54:08,533 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 17:54:08,534 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 17:54:08,534 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-11 17:54:08,534 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 17:54:08,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-11 17:54:08,534 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-11 17:54:08,535 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-09-11 17:54:08,535 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 5 states. [2018-09-11 17:54:08,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 17:54:08,894 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2018-09-11 17:54:08,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-11 17:54:08,896 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-09-11 17:54:08,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 17:54:08,897 INFO L225 Difference]: With dead ends: 70 [2018-09-11 17:54:08,897 INFO L226 Difference]: Without dead ends: 42 [2018-09-11 17:54:08,898 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-09-11 17:54:08,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-09-11 17:54:08,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2018-09-11 17:54:08,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-11 17:54:08,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-09-11 17:54:08,905 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 25 [2018-09-11 17:54:08,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 17:54:08,906 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-09-11 17:54:08,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-11 17:54:08,906 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-09-11 17:54:08,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-09-11 17:54:08,907 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 17:54:08,908 INFO L376 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 17:54:08,908 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 17:54:08,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1518951494, now seen corresponding path program 1 times [2018-09-11 17:54:08,908 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 17:54:08,909 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 30 with the following transitions: [2018-09-11 17:54:08,909 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [7], [16], [20], [23], [25], [28], [30], [32], [36], [40], [43], [69], [73], [76], [88], [92], [97], [106], [107], [108], [110] [2018-09-11 17:54:08,910 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-11 17:54:08,911 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 17:54:08,924 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 17:54:08,924 INFO L272 AbstractInterpreter]: Visited 15 different actions 27 times. Merged at 4 different actions 8 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 14 variables. [2018-09-11 17:54:08,953 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 17:54:08,973 INFO L232 lantSequenceWeakener]: Weakened 14 states. On average, predicates are now at 36.9% of their original sizes. [2018-09-11 17:54:08,973 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 17:54:09,084 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 17:54:09,084 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 17:54:09,084 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-11 17:54:09,084 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 17:54:09,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-11 17:54:09,085 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-11 17:54:09,085 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-11 17:54:09,086 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 6 states. [2018-09-11 17:54:09,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 17:54:09,373 INFO L93 Difference]: Finished difference Result 73 states and 86 transitions. [2018-09-11 17:54:09,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-11 17:54:09,374 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2018-09-11 17:54:09,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 17:54:09,377 INFO L225 Difference]: With dead ends: 73 [2018-09-11 17:54:09,377 INFO L226 Difference]: Without dead ends: 57 [2018-09-11 17:54:09,378 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-09-11 17:54:09,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-11 17:54:09,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2018-09-11 17:54:09,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-11 17:54:09,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2018-09-11 17:54:09,391 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 29 [2018-09-11 17:54:09,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 17:54:09,392 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2018-09-11 17:54:09,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-11 17:54:09,392 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2018-09-11 17:54:09,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-11 17:54:09,393 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 17:54:09,394 INFO L376 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 17:54:09,394 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 17:54:09,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1450702516, now seen corresponding path program 1 times [2018-09-11 17:54:09,395 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 17:54:09,395 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 39 with the following transitions: [2018-09-11 17:54:09,395 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [7], [16], [20], [23], [25], [28], [30], [32], [36], [40], [43], [45], [49], [52], [65], [69], [73], [76], [78], [82], [84], [88], [92], [97], [106], [107], [108], [110] [2018-09-11 17:54:09,397 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-11 17:54:09,397 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 17:54:09,407 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 17:54:09,407 INFO L272 AbstractInterpreter]: Visited 18 different actions 30 times. Merged at 4 different actions 8 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 16 variables. [2018-09-11 17:54:09,409 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 17:54:09,431 INFO L232 lantSequenceWeakener]: Weakened 18 states. On average, predicates are now at 39.02% of their original sizes. [2018-09-11 17:54:09,431 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 17:54:09,523 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 17:54:09,523 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 17:54:09,524 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-11 17:54:09,524 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 17:54:09,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-11 17:54:09,525 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-11 17:54:09,525 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-11 17:54:09,525 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 7 states. [2018-09-11 17:54:10,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 17:54:10,099 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2018-09-11 17:54:10,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-11 17:54:10,099 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2018-09-11 17:54:10,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 17:54:10,101 INFO L225 Difference]: With dead ends: 86 [2018-09-11 17:54:10,101 INFO L226 Difference]: Without dead ends: 61 [2018-09-11 17:54:10,102 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-09-11 17:54:10,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-09-11 17:54:10,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 47. [2018-09-11 17:54:10,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-09-11 17:54:10,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2018-09-11 17:54:10,110 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 38 [2018-09-11 17:54:10,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 17:54:10,111 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2018-09-11 17:54:10,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-11 17:54:10,111 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2018-09-11 17:54:10,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-11 17:54:10,112 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 17:54:10,113 INFO L376 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 17:54:10,113 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 17:54:10,113 INFO L82 PathProgramCache]: Analyzing trace with hash -213301109, now seen corresponding path program 1 times [2018-09-11 17:54:10,113 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 17:54:10,114 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 43 with the following transitions: [2018-09-11 17:54:10,114 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [7], [16], [20], [23], [25], [28], [30], [32], [36], [40], [43], [45], [49], [52], [54], [57], [61], [65], [69], [73], [76], [78], [82], [84], [88], [92], [97], [106], [107], [108], [110] [2018-09-11 17:54:10,116 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-11 17:54:10,116 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 17:54:10,161 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-11 17:54:10,161 INFO L272 AbstractInterpreter]: Visited 35 different actions 84 times. Merged at 16 different actions 37 times. Never widened. Found 8 fixpoints after 6 different actions. Largest state had 17 variables. [2018-09-11 17:54:10,170 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-11 17:54:10,192 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-11 17:54:10,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 05:54:10 BoogieIcfgContainer [2018-09-11 17:54:10,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-11 17:54:10,193 INFO L168 Benchmark]: Toolchain (without parser) took 3700.31 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.9 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -676.2 MB). Peak memory consumption was 44.7 MB. Max. memory is 7.1 GB. [2018-09-11 17:54:10,195 INFO L168 Benchmark]: CDTParser took 0.24 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 17:54:10,197 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.41 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 17:54:10,198 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.08 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 17:54:10,199 INFO L168 Benchmark]: Boogie Preprocessor took 62.00 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 17:54:10,199 INFO L168 Benchmark]: RCFGBuilder took 753.50 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -782.3 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2018-09-11 17:54:10,200 INFO L168 Benchmark]: TraceAbstraction took 2503.66 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: 95.5 MB). Peak memory consumption was 95.5 MB. Max. memory is 7.1 GB. [2018-09-11 17:54:10,204 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 344.41 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 30.08 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 62.00 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 753.50 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -782.3 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2503.66 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: 95.5 MB). Peak memory consumption was 95.5 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: [L9] int INFINITY = 899; [L12] int nodecount = 5; [L13] int edgecount = 20; [L14] int source = 0; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L18] int distance[5]; [L19] int x,y; [L20] int i,j; [L22] i = 0 [L22] COND TRUE i < nodecount [L23] COND TRUE i == source [L24] distance[i] = 0 [L22] i++ [L22] i++ [L22] COND TRUE i < nodecount [L23] COND FALSE !(i == source) [L27] distance[i] = INFINITY [L22] i++ [L22] i++ [L22] COND FALSE !(i < nodecount) [L31] i = 0 [L31] COND TRUE i < nodecount [L33] j = 0 [L33] COND TRUE j < edgecount [L35] x = Dest[j] [L36] y = Source[j] [L37] COND TRUE distance[x] > distance[y] + Weight[j] [L39] distance[x] = distance[y] + Weight[j] [L33] j++ [L33] j++ [L33] COND FALSE !(j < edgecount) [L31] i++ [L31] i++ [L31] COND FALSE !(i < nodecount) [L43] i = 0 [L43] COND TRUE i < edgecount [L45] x = Dest[i] [L46] y = Source[i] [L47] COND FALSE !(distance[x] > distance[y] + Weight[i]) [L43] i++ [L43] i++ [L43] COND FALSE !(i < edgecount) [L53] i = 0 [L53] COND TRUE i < nodecount [L55] CALL __VERIFIER_assert(distance[i]>=0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 39 locations, 1 error locations. UNKNOWN Result, 2.4s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 155 SDtfs, 267 SDslu, 145 SDs, 0 SdLazy, 180 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 130 GetRequests, 104 SyntacticMatches, 8 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.3s AbstIntTime, 6 AbstIntIterations, 5 AbstIntStrong, 0.83015873015873 AbsIntWeakeningRatio, 0.6349206349206349 AbsIntAvgWeakeningVarsNumRemoved, 0.5793650793650794 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 29 StatesRemovedByMinimization, 4 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/eureka_01_true-unreach-call.i_svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-11_17-54-10-217.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/eureka_01_true-unreach-call.i_svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-11_17-54-10-217.csv Received shutdown request...