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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_true-unreach-call4_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 22:10:10,736 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 22:10:10,741 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 22:10:10,758 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 22:10:10,758 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 22:10:10,760 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 22:10:10,762 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 22:10:10,766 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 22:10:10,769 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 22:10:10,770 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 22:10:10,772 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 22:10:10,772 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 22:10:10,773 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 22:10:10,775 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 22:10:10,776 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 22:10:10,777 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 22:10:10,779 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 22:10:10,787 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 22:10:10,791 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 22:10:10,793 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 22:10:10,797 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 22:10:10,799 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 22:10:10,802 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 22:10:10,813 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 22:10:10,828 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 22:10:10,828 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 22:10:10,829 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 22:10:10,829 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 22:10:10,830 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 22:10:10,830 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 22:10:10,830 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 22:10:10,830 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 22:10:10,830 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 22:10:10,831 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 22:10:10,831 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 22:10:10,831 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 22:10:10,831 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 22:10:10,832 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 22:10:10,832 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 22:10:10,832 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 22:10:10,832 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 22:10:10,833 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 22:10:10,833 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 22:10:10,833 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 22:10:10,833 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 22:10:10,833 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 22:10:10,834 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 22:10:10,834 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 22:10:10,834 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 22:10:10,834 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 22:10:10,834 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 22:10:10,834 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 22:10:10,835 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 22:10:10,835 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 22:10:10,835 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 22:10:10,835 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 22:10:10,835 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 22:10:10,836 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 22:10:10,836 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 22:10:10,903 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 22:10:10,915 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 22:10:10,919 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 22:10:10,921 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 22:10:10,921 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 22:10:10,922 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_true-unreach-call4_true-termination.i [2018-11-07 22:10:10,982 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/396c470ee/7c0a4bdf35494065bcfd5e6c09ed5cdb/FLAGc73e432fb [2018-11-07 22:10:11,457 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 22:10:11,458 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_true-unreach-call4_true-termination.i [2018-11-07 22:10:11,464 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/396c470ee/7c0a4bdf35494065bcfd5e6c09ed5cdb/FLAGc73e432fb [2018-11-07 22:10:11,479 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/396c470ee/7c0a4bdf35494065bcfd5e6c09ed5cdb [2018-11-07 22:10:11,490 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 22:10:11,491 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 22:10:11,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 22:10:11,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 22:10:11,495 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 22:10:11,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:10:11" (1/1) ... [2018-11-07 22:10:11,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b1de55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:10:11, skipping insertion in model container [2018-11-07 22:10:11,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:10:11" (1/1) ... [2018-11-07 22:10:11,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 22:10:11,533 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 22:10:11,724 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 22:10:11,728 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 22:10:11,755 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 22:10:11,779 INFO L193 MainTranslator]: Completed translation [2018-11-07 22:10:11,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:10:11 WrapperNode [2018-11-07 22:10:11,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 22:10:11,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 22:10:11,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 22:10:11,781 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 22:10:11,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:10:11" (1/1) ... [2018-11-07 22:10:11,802 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:10:11" (1/1) ... [2018-11-07 22:10:11,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 22:10:11,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 22:10:11,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 22:10:11,811 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 22:10:11,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:10:11" (1/1) ... [2018-11-07 22:10:11,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:10:11" (1/1) ... [2018-11-07 22:10:11,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:10:11" (1/1) ... [2018-11-07 22:10:11,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:10:11" (1/1) ... [2018-11-07 22:10:11,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:10:11" (1/1) ... [2018-11-07 22:10:11,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:10:11" (1/1) ... [2018-11-07 22:10:11,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:10:11" (1/1) ... [2018-11-07 22:10:11,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 22:10:11,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 22:10:11,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 22:10:11,843 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 22:10:11,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:10:11" (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 [2018-11-07 22:10:11,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 22:10:11,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 22:10:11,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-07 22:10:11,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 22:10:11,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 22:10:11,995 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 22:10:11,995 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 22:10:11,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-07 22:10:11,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-07 22:10:11,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-07 22:10:11,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-07 22:10:12,611 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 22:10:12,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:10:12 BoogieIcfgContainer [2018-11-07 22:10:12,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 22:10:12,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 22:10:12,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 22:10:12,616 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 22:10:12,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:10:11" (1/3) ... [2018-11-07 22:10:12,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac60356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:10:12, skipping insertion in model container [2018-11-07 22:10:12,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:10:11" (2/3) ... [2018-11-07 22:10:12,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac60356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:10:12, skipping insertion in model container [2018-11-07 22:10:12,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:10:12" (3/3) ... [2018-11-07 22:10:12,620 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_true-unreach-call4_true-termination.i [2018-11-07 22:10:12,630 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 22:10:12,639 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 22:10:12,656 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 22:10:12,687 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 22:10:12,687 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 22:10:12,687 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 22:10:12,688 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 22:10:12,688 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 22:10:12,688 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 22:10:12,688 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 22:10:12,688 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 22:10:12,707 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-11-07 22:10:12,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-07 22:10:12,714 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 22:10:12,715 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 22:10:12,717 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 22:10:12,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 22:10:12,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1232552056, now seen corresponding path program 1 times [2018-11-07 22:10:12,726 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 22:10:12,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:10:12,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 22:10:12,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:10:12,778 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 22:10:12,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 22:10:13,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 22:10:13,013 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 22:10:13,013 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 22:10:13,013 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 22:10:13,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 22:10:13,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 22:10:13,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 22:10:13,036 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 5 states. [2018-11-07 22:10:13,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 22:10:13,345 INFO L93 Difference]: Finished difference Result 78 states and 101 transitions. [2018-11-07 22:10:13,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 22:10:13,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-07 22:10:13,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 22:10:13,356 INFO L225 Difference]: With dead ends: 78 [2018-11-07 22:10:13,357 INFO L226 Difference]: Without dead ends: 43 [2018-11-07 22:10:13,361 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 22:10:13,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-07 22:10:13,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2018-11-07 22:10:13,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-07 22:10:13,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-11-07 22:10:13,411 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 13 [2018-11-07 22:10:13,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 22:10:13,411 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2018-11-07 22:10:13,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 22:10:13,416 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2018-11-07 22:10:13,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-07 22:10:13,417 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 22:10:13,417 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 22:10:13,417 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 22:10:13,419 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 22:10:13,420 INFO L82 PathProgramCache]: Analyzing trace with hash -814446705, now seen corresponding path program 1 times [2018-11-07 22:10:13,420 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 22:10:13,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:10:13,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 22:10:13,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:10:13,424 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 22:10:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 22:10:13,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 22:10:13,531 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 22:10:13,531 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 22:10:13,532 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 22:10:13,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 22:10:13,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 22:10:13,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 22:10:13,534 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 3 states. [2018-11-07 22:10:13,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 22:10:13,559 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2018-11-07 22:10:13,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 22:10:13,559 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-11-07 22:10:13,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 22:10:13,560 INFO L225 Difference]: With dead ends: 49 [2018-11-07 22:10:13,561 INFO L226 Difference]: Without dead ends: 36 [2018-11-07 22:10:13,562 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 22:10:13,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-07 22:10:13,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-11-07 22:10:13,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-07 22:10:13,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2018-11-07 22:10:13,570 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 18 [2018-11-07 22:10:13,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 22:10:13,571 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2018-11-07 22:10:13,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 22:10:13,571 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2018-11-07 22:10:13,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-07 22:10:13,572 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 22:10:13,572 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 22:10:13,573 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 22:10:13,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 22:10:13,573 INFO L82 PathProgramCache]: Analyzing trace with hash 2030890370, now seen corresponding path program 1 times [2018-11-07 22:10:13,573 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 22:10:13,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:10:13,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 22:10:13,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:10:13,575 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 22:10:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 22:10:14,027 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 22:10:14,027 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 22:10:14,028 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 22:10:14,028 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2018-11-07 22:10:14,030 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [6], [10], [16], [18], [19], [20], [50], [53], [55], [58], [60], [61], [62], [63], [65], [66] [2018-11-07 22:10:14,066 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 22:10:14,067 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 22:10:14,185 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 22:10:14,330 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 22:10:14,332 INFO L272 AbstractInterpreter]: Visited 19 different actions 31 times. Merged at 6 different actions 6 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 21 variables. [2018-11-07 22:10:14,352 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 22:10:14,353 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 22:10:14,353 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 22:10:14,354 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 22:10:14,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 22:10:14,367 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 22:10:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 22:10:14,424 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 22:10:14,896 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 22:10:14,897 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 22:10:15,168 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 22:10:15,192 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 22:10:15,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 17 [2018-11-07 22:10:15,192 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 22:10:15,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 22:10:15,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 22:10:15,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2018-11-07 22:10:15,194 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 8 states. [2018-11-07 22:10:18,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 22:10:18,074 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2018-11-07 22:10:18,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 22:10:18,074 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-11-07 22:10:18,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 22:10:18,076 INFO L225 Difference]: With dead ends: 54 [2018-11-07 22:10:18,076 INFO L226 Difference]: Without dead ends: 52 [2018-11-07 22:10:18,077 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2018-11-07 22:10:18,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-11-07 22:10:18,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 32. [2018-11-07 22:10:18,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-07 22:10:18,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2018-11-07 22:10:18,085 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 23 [2018-11-07 22:10:18,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 22:10:18,085 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2018-11-07 22:10:18,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 22:10:18,086 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2018-11-07 22:10:18,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-07 22:10:18,087 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 22:10:18,087 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 22:10:18,087 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 22:10:18,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 22:10:18,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1551069381, now seen corresponding path program 1 times [2018-11-07 22:10:18,088 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 22:10:18,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:10:18,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 22:10:18,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:10:18,089 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 22:10:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 22:10:18,757 WARN L179 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 18 [2018-11-07 22:10:19,091 WARN L179 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 21 [2018-11-07 22:10:19,471 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2018-11-07 22:10:20,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 22:10:20,004 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 22:10:20,004 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 22:10:20,005 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 29 with the following transitions: [2018-11-07 22:10:20,005 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [6], [10], [14], [16], [18], [19], [20], [26], [30], [36], [37], [38], [50], [53], [55], [58], [60], [61], [62], [63], [65], [66], [67] [2018-11-07 22:10:20,007 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 22:10:20,008 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 22:10:20,020 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 22:10:20,148 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 22:10:20,148 INFO L272 AbstractInterpreter]: Visited 26 different actions 45 times. Merged at 7 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 23 variables. [2018-11-07 22:10:20,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 22:10:20,186 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 22:10:20,186 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 22:10:20,187 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 22:10:20,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 22:10:20,202 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 22:10:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 22:10:20,261 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 22:10:25,583 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 42 [2018-11-07 22:10:25,591 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 22:10:25,600 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 22:10:25,602 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 22:10:25,604 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 22:10:25,616 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 60 [2018-11-07 22:10:25,617 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 22:10:25,633 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 22:10:25,707 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-07 22:10:25,707 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:75, output treesize:7 [2018-11-07 22:10:25,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 22:10:25,770 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 22:10:27,108 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 78 [2018-11-07 22:10:27,147 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 22:10:27,163 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 22:10:27,178 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 22:10:27,178 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 22:10:27,179 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 22:10:27,226 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 22:10:27,247 INFO L303 Elim1Store]: Index analysis took 138 ms [2018-11-07 22:10:27,283 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 132 [2018-11-07 22:10:27,295 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-07 22:10:27,350 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 22:10:27,361 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-07 22:10:27,362 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:101, output treesize:29 [2018-11-07 22:10:27,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 22:10:27,521 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 22:10:27,521 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13, 11] imperfect sequences [14] total 29 [2018-11-07 22:10:27,521 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 22:10:27,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-07 22:10:27,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-07 22:10:27,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=670, Unknown=2, NotChecked=0, Total=812 [2018-11-07 22:10:27,524 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 13 states. [2018-11-07 22:10:33,563 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2018-11-07 22:10:36,461 WARN L179 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2018-11-07 22:10:41,643 WARN L179 SmtUtils]: Spent 4.39 s on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2018-11-07 22:10:45,847 WARN L179 SmtUtils]: Spent 1.87 s on a formula simplification that was a NOOP. DAG size: 46 [2018-11-07 22:10:48,688 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2018-11-07 22:10:51,115 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2018-11-07 22:10:53,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 22:10:53,190 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2018-11-07 22:10:53,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-07 22:10:53,191 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 28 [2018-11-07 22:10:53,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 22:10:53,194 INFO L225 Difference]: With dead ends: 54 [2018-11-07 22:10:53,194 INFO L226 Difference]: Without dead ends: 52 [2018-11-07 22:10:53,195 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 37 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 26.7s TimeCoverageRelationStatistics Valid=234, Invalid=1021, Unknown=5, NotChecked=0, Total=1260 [2018-11-07 22:10:53,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-11-07 22:10:53,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 41. [2018-11-07 22:10:53,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-07 22:10:53,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2018-11-07 22:10:53,205 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 28 [2018-11-07 22:10:53,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 22:10:53,205 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2018-11-07 22:10:53,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-07 22:10:53,205 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2018-11-07 22:10:53,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-07 22:10:53,207 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 22:10:53,207 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 22:10:53,207 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 22:10:53,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 22:10:53,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1176876577, now seen corresponding path program 1 times [2018-11-07 22:10:53,208 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 22:10:53,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:10:53,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 22:10:53,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:10:53,209 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 22:10:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 22:10:53,455 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-07 22:10:53,455 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 22:10:53,455 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 22:10:53,455 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 39 with the following transitions: [2018-11-07 22:10:53,456 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [6], [10], [14], [16], [18], [19], [20], [26], [30], [36], [37], [38], [40], [50], [53], [55], [58], [60], [61], [62], [63], [65], [66], [67], [68] [2018-11-07 22:10:53,458 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 22:10:53,458 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 22:10:53,470 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 22:10:53,579 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 22:10:53,579 INFO L272 AbstractInterpreter]: Visited 28 different actions 47 times. Merged at 7 different actions 7 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 25 variables. [2018-11-07 22:10:53,594 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 22:10:53,594 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 22:10:53,594 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 22:10:53,594 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 22:10:53,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 22:10:53,603 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 22:10:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 22:10:53,636 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 22:10:55,789 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-07 22:10:55,790 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 22:10:55,990 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-07 22:10:56,010 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 22:10:56,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2018-11-07 22:10:56,011 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 22:10:56,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 22:10:56,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 22:10:56,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=49, Unknown=1, NotChecked=0, Total=72 [2018-11-07 22:10:56,012 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 7 states. [2018-11-07 22:11:00,436 WARN L179 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 33 DAG size of output: 24 [2018-11-07 22:11:04,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 22:11:04,693 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2018-11-07 22:11:04,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 22:11:04,708 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2018-11-07 22:11:04,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 22:11:04,709 INFO L225 Difference]: With dead ends: 45 [2018-11-07 22:11:04,709 INFO L226 Difference]: Without dead ends: 0 [2018-11-07 22:11:04,710 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 73 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=38, Invalid=71, Unknown=1, NotChecked=0, Total=110 [2018-11-07 22:11:04,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-07 22:11:04,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-07 22:11:04,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-07 22:11:04,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-07 22:11:04,711 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2018-11-07 22:11:04,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 22:11:04,711 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-07 22:11:04,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 22:11:04,711 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-07 22:11:04,711 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-07 22:11:04,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-07 22:11:16,020 WARN L179 SmtUtils]: Spent 11.26 s on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2018-11-07 22:11:24,359 WARN L179 SmtUtils]: Spent 8.34 s on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-11-07 22:11:41,610 WARN L179 SmtUtils]: Spent 17.25 s on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-11-07 22:11:43,854 WARN L179 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 77 DAG size of output: 32 [2018-11-07 22:11:43,856 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-07 22:11:43,857 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-07 22:11:43,857 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-07 22:11:43,857 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-07 22:11:43,857 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-07 22:11:43,857 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-07 22:11:43,857 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-07 22:11:43,857 INFO L425 ceAbstractionStarter]: For program point L33(line 33) no Hoare annotation was computed. [2018-11-07 22:11:43,858 INFO L425 ceAbstractionStarter]: For program point L33-1(line 33) no Hoare annotation was computed. [2018-11-07 22:11:43,858 INFO L425 ceAbstractionStarter]: For program point L31-1(lines 31 37) no Hoare annotation was computed. [2018-11-07 22:11:43,858 INFO L421 ceAbstractionStarter]: At program point L31-3(lines 31 37) the Hoare annotation is: (let ((.cse0 (= |main_~#array~0.offset| 0))) (or (and .cse0 (<= main_~index1~0 (+ (* 4294967296 (div main_~index1~0 4294967296)) 99999)) (<= main_~index2~0 (+ (* 4294967296 (div main_~index2~0 4294967296)) 99999)) (= main_~loop_entered~0 0)) (and .cse0 (<= main_~index1~0 (+ (* 4294967296 (div (+ main_~index1~0 (+ (* (- 4294967296) (div (+ main_~index2~0 4294867297) 4294967296)) (- 1))) 4294967296)) main_~index2~0 1)) (let ((.cse1 (select |#memory_int| |main_~#array~0.base|))) (= (mod (select .cse1 (+ (* 4 (mod (+ main_~index2~0 1) 4294967296)) |main_~#array~0.offset|)) 4294967296) (mod (select .cse1 (+ (* 4 (mod (+ main_~index1~0 4294967295) 4294967296)) |main_~#array~0.offset|)) 4294967296)))))) [2018-11-07 22:11:43,858 INFO L425 ceAbstractionStarter]: For program point L31-4(lines 20 47) no Hoare annotation was computed. [2018-11-07 22:11:43,858 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 19 47) no Hoare annotation was computed. [2018-11-07 22:11:43,858 INFO L425 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-11-07 22:11:43,858 INFO L425 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2018-11-07 22:11:43,858 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 19 47) no Hoare annotation was computed. [2018-11-07 22:11:43,859 INFO L425 ceAbstractionStarter]: For program point L40-1(lines 40 44) no Hoare annotation was computed. [2018-11-07 22:11:43,859 INFO L421 ceAbstractionStarter]: At program point L40-3(lines 40 44) the Hoare annotation is: (let ((.cse0 (= |main_~#array~0.offset| 0))) (or (let ((.cse1 (* 4294967296 (div main_~index2~0 4294967296)))) (and .cse0 (<= main_~index2~0 (+ .cse1 99999)) (<= (+ .cse1 main_~index1~0 1) (+ main_~index2~0 (* 4294967296 (div main_~index1~0 4294967296)))))) (and .cse0 (<= main_~index1~0 (+ (* 4294967296 (div (+ main_~index1~0 (+ (* (- 4294967296) (div (+ main_~index2~0 4294867297) 4294967296)) (- 1))) 4294967296)) main_~index2~0 1)) (let ((.cse2 (select |#memory_int| |main_~#array~0.base|))) (= (mod (select .cse2 (+ (* 4 (mod (+ main_~index2~0 1) 4294967296)) |main_~#array~0.offset|)) 4294967296) (mod (select .cse2 (+ (* 4 (mod (+ main_~index1~0 4294967295) 4294967296)) |main_~#array~0.offset|)) 4294967296)))))) [2018-11-07 22:11:43,859 INFO L421 ceAbstractionStarter]: At program point L32(line 32) the Hoare annotation is: (and (= |main_~#array~0.offset| 0) (or (and (<= main_~index2~0 (+ (* 4294967296 (div main_~index2~0 4294967296)) 99999)) (= main_~loop_entered~0 0)) (and (<= main_~index2~0 (+ (* 4294967296 (div (+ main_~index2~0 1) 4294967296)) 99998)) (exists ((v_prenex_1 Int)) (< (mod v_prenex_1 4294967296) (mod (+ main_~index2~0 1) 4294967296))))) (< (mod main_~index1~0 4294967296) (mod main_~index2~0 4294967296))) [2018-11-07 22:11:43,859 INFO L425 ceAbstractionStarter]: For program point L32-1(line 32) no Hoare annotation was computed. [2018-11-07 22:11:43,859 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 19 47) the Hoare annotation is: true [2018-11-07 22:11:43,860 INFO L425 ceAbstractionStarter]: For program point L41(line 41) no Hoare annotation was computed. [2018-11-07 22:11:43,860 INFO L425 ceAbstractionStarter]: For program point L41-1(line 41) no Hoare annotation was computed. [2018-11-07 22:11:43,860 INFO L421 ceAbstractionStarter]: At program point L41-2(line 41) the Hoare annotation is: (and (= |main_~#array~0.offset| 0) (< (mod main_~index2~0 4294967296) (mod main_~index1~0 4294967296)) (< (mod (+ main_~index1~0 4294967295) 4294967296) (mod (+ main_~index2~0 1) 4294967296)) (exists ((main_~index1~0 Int)) (let ((.cse1 (mod main_~index1~0 4294967296)) (.cse3 (mod (+ main_~index2~0 1) 4294967296)) (.cse0 (select |#memory_int| |main_~#array~0.base|)) (.cse2 (mod (+ main_~index1~0 4294967295) 4294967296))) (and (= (select .cse0 (+ (* 4 .cse1) |main_~#array~0.offset|)) |main_#t~mem7|) (< (mod main_~index2~0 4294967296) .cse1) (< .cse2 .cse3) (= (mod (select .cse0 (+ (* 4 .cse3) |main_~#array~0.offset|)) 4294967296) (mod (select .cse0 (+ (* 4 .cse2) |main_~#array~0.offset|)) 4294967296))))) (<= main_~index1~0 (+ (* 4294967296 (div (+ main_~index1~0 (+ (* (- 4294967296) (div (+ main_~index2~0 4294867297) 4294967296)) (- 1))) 4294967296)) main_~index2~0 1)) (<= |main_#t~mem7| (+ |main_#t~mem8| (* 4294967296 (div (+ (- |main_#t~mem8|) |main_#t~mem7|) 4294967296))))) [2018-11-07 22:11:43,860 INFO L425 ceAbstractionStarter]: For program point L39(lines 39 45) no Hoare annotation was computed. [2018-11-07 22:11:43,861 INFO L425 ceAbstractionStarter]: For program point L41-3(line 41) no Hoare annotation was computed. [2018-11-07 22:11:43,861 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2018-11-07 22:11:43,861 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2018-11-07 22:11:43,861 INFO L425 ceAbstractionStarter]: For program point L12(line 12) no Hoare annotation was computed. [2018-11-07 22:11:43,861 INFO L425 ceAbstractionStarter]: For program point L11(lines 11 13) no Hoare annotation was computed. [2018-11-07 22:11:43,861 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2018-11-07 22:11:43,862 INFO L425 ceAbstractionStarter]: For program point L11-2(lines 9 15) no Hoare annotation was computed. [2018-11-07 22:11:43,871 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-07 22:11:43,872 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-07 22:11:43,880 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-07 22:11:43,881 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-07 22:11:43,882 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-07 22:11:43,884 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-07 22:11:43,885 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-07 22:11:43,885 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-07 22:11:43,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 10:11:43 BoogieIcfgContainer [2018-11-07 22:11:43,889 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 22:11:43,890 INFO L168 Benchmark]: Toolchain (without parser) took 92399.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -270.3 MB). Peak memory consumption was 470.5 MB. Max. memory is 7.1 GB. [2018-11-07 22:11:43,891 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 22:11:43,891 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.47 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. [2018-11-07 22:11:43,892 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.31 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. [2018-11-07 22:11:43,894 INFO L168 Benchmark]: Boogie Preprocessor took 31.73 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. [2018-11-07 22:11:43,895 INFO L168 Benchmark]: RCFGBuilder took 769.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -772.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2018-11-07 22:11:43,896 INFO L168 Benchmark]: TraceAbstraction took 91276.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 491.6 MB). Peak memory consumption was 491.6 MB. Max. memory is 7.1 GB. [2018-11-07 22:11:43,901 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 288.47 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 29.31 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.73 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 769.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -772.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 91276.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 491.6 MB). Peak memory consumption was 491.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 31]: Loop Invariant [2018-11-07 22:11:43,916 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-07 22:11:43,916 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-07 22:11:43,922 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-07 22:11:43,922 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((array == 0 && index1 <= 4294967296 * (index1 / 4294967296) + 99999) && index2 <= 4294967296 * (index2 / 4294967296) + 99999) && loop_entered == 0) || ((array == 0 && index1 <= 4294967296 * ((index1 + (-4294967296 * ((index2 + 4294867297) / 4294967296) + -1)) / 4294967296) + index2 + 1) && unknown-#memory_int-unknown[array][4 * ((index2 + 1) % 4294967296) + array] % 4294967296 == unknown-#memory_int-unknown[array][4 * ((index1 + 4294967295) % 4294967296) + array] % 4294967296) - InvariantResult [Line: 40]: Loop Invariant [2018-11-07 22:11:43,923 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-07 22:11:43,924 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-07 22:11:43,924 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-07 22:11:43,925 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((array == 0 && index2 <= 4294967296 * (index2 / 4294967296) + 99999) && 4294967296 * (index2 / 4294967296) + index1 + 1 <= index2 + 4294967296 * (index1 / 4294967296)) || ((array == 0 && index1 <= 4294967296 * ((index1 + (-4294967296 * ((index2 + 4294867297) / 4294967296) + -1)) / 4294967296) + index2 + 1) && unknown-#memory_int-unknown[array][4 * ((index2 + 1) % 4294967296) + array] % 4294967296 == unknown-#memory_int-unknown[array][4 * ((index1 + 4294967295) % 4294967296) + array] % 4294967296) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 32 locations, 1 error locations. SAFE Result, 91.1s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 37.6s AutomataDifference, 0.0s DeadEndRemovalTime, 39.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 122 SDtfs, 106 SDslu, 322 SDs, 0 SdLazy, 313 SolverSat, 27 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 14.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 226 GetRequests, 150 SyntacticMatches, 12 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 34.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.6s AbstIntTime, 3 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 44 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 15 PreInvPairs, 22 NumberOfFragments, 336 HoareAnnotationTreeSize, 15 FomulaSimplifications, 28 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 480 FormulaSimplificationTreeSizeReductionInter, 39.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 13.0s InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 287 ConstructedInterpolants, 10 QuantifiedInterpolants, 98238 SizeOfPredicates, 20 NumberOfNonLiveVariables, 252 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 62/72 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...