java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_compound_exp_cong.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/jain_2.i_2.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 16:39:36,949 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 16:39:36,952 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 16:39:36,969 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-12-03 16:39:37,018 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_compound_exp_cong.epf [2018-12-03 16:39:37,030 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 16:39:37,031 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 16:39:37,031 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 16:39:37,032 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 16:39:37,032 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 16:39:37,032 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 16:39:37,032 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 16:39:37,032 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 16:39:37,033 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 16:39:37,033 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 16:39:37,033 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 16:39:37,033 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 16:39:37,033 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 16:39:37,034 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 16:39:37,034 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 16:39:37,035 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 16:39:37,035 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 16:39:37,035 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 16:39:37,035 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 16:39:37,035 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 16:39:37,036 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 16:39:37,036 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 16:39:37,036 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 16:39:37,036 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 16:39:37,036 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 16:39:37,037 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 16:39:37,037 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 16:39:37,037 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 16:39:37,037 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 16:39:37,037 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 16:39:37,038 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 16:39:37,038 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 16:39:37,038 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 16:39:37,038 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 16:39:37,038 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 16:39:37,039 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 16:39:37,039 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 16:39:37,039 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 16:39:37,039 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 16:39:37,039 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 16:39:37,040 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 16:39:37,081 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 16:39:37,095 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 16:39:37,100 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 16:39:37,101 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 16:39:37,102 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 16:39:37,103 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/jain_2.i_2.bpl [2018-12-03 16:39:37,103 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/jain_2.i_2.bpl' [2018-12-03 16:39:37,142 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 16:39:37,144 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 16:39:37,145 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 16:39:37,145 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 16:39:37,145 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 16:39:37,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "jain_2.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:39:37" (1/1) ... [2018-12-03 16:39:37,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "jain_2.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:39:37" (1/1) ... [2018-12-03 16:39:37,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 16:39:37,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 16:39:37,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 16:39:37,183 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 16:39:37,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "jain_2.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:39:37" (1/1) ... [2018-12-03 16:39:37,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "jain_2.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:39:37" (1/1) ... [2018-12-03 16:39:37,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "jain_2.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:39:37" (1/1) ... [2018-12-03 16:39:37,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "jain_2.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:39:37" (1/1) ... [2018-12-03 16:39:37,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "jain_2.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:39:37" (1/1) ... [2018-12-03 16:39:37,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "jain_2.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:39:37" (1/1) ... [2018-12-03 16:39:37,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "jain_2.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:39:37" (1/1) ... [2018-12-03 16:39:37,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 16:39:37,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 16:39:37,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 16:39:37,207 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 16:39:37,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "jain_2.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:39:37" (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 [2018-12-03 16:39:37,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 16:39:37,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 16:39:37,519 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 16:39:37,519 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-03 16:39:37,520 INFO L202 PluginConnector]: Adding new model jain_2.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:39:37 BoogieIcfgContainer [2018-12-03 16:39:37,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 16:39:37,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 16:39:37,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 16:39:37,526 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 16:39:37,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "jain_2.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:39:37" (1/2) ... [2018-12-03 16:39:37,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a9b33 and model type jain_2.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 04:39:37, skipping insertion in model container [2018-12-03 16:39:37,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "jain_2.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:39:37" (2/2) ... [2018-12-03 16:39:37,530 INFO L112 eAbstractionObserver]: Analyzing ICFG jain_2.i_2.bpl [2018-12-03 16:39:37,541 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 16:39:37,551 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 16:39:37,570 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 16:39:37,612 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 16:39:37,613 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 16:39:37,613 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 16:39:37,613 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 16:39:37,614 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 16:39:37,614 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 16:39:37,614 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 16:39:37,614 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 16:39:37,634 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-12-03 16:39:37,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-03 16:39:37,647 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 16:39:37,648 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-12-03 16:39:37,653 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 16:39:37,660 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:39:37,661 INFO L82 PathProgramCache]: Analyzing trace with hash 925701, now seen corresponding path program 1 times [2018-12-03 16:39:37,664 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 16:39:37,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:39:37,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 16:39:37,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:39:37,726 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 16:39:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:39:37,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 16:39:37,933 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 16:39:37,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 16:39:37,934 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 16:39:37,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 16:39:37,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 16:39:37,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 16:39:37,968 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 4 states. [2018-12-03 16:39:38,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 16:39:38,095 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2018-12-03 16:39:38,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 16:39:38,097 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-12-03 16:39:38,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 16:39:38,108 INFO L225 Difference]: With dead ends: 12 [2018-12-03 16:39:38,108 INFO L226 Difference]: Without dead ends: 8 [2018-12-03 16:39:38,112 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 16:39:38,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-12-03 16:39:38,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-12-03 16:39:38,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-03 16:39:38,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-12-03 16:39:38,150 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-12-03 16:39:38,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 16:39:38,150 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-12-03 16:39:38,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 16:39:38,151 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-12-03 16:39:38,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-03 16:39:38,151 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 16:39:38,152 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-12-03 16:39:38,152 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 16:39:38,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:39:38,152 INFO L82 PathProgramCache]: Analyzing trace with hash 889531649, now seen corresponding path program 1 times [2018-12-03 16:39:38,153 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 16:39:38,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:39:38,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 16:39:38,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:39:38,155 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 16:39:38,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:39:38,468 WARN L180 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-12-03 16:39:38,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 16:39:38,565 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 16:39:38,565 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 16:39:38,566 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 7 with the following transitions: [2018-12-03 16:39:38,568 INFO L205 CegarAbsIntRunner]: [0], [2], [6], [8], [10] [2018-12-03 16:39:38,608 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 16:39:38,608 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 16:39:38,758 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 16:39:38,760 INFO L272 AbstractInterpreter]: Visited 5 different actions 10 times. Merged at 4 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2018-12-03 16:39:38,781 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:39:38,783 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 16:39:38,783 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 16:39:38,783 INFO L192 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 [2018-12-03 16:39:38,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 16:39:38,795 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 16:39:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:39:38,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 16:39:39,121 WARN L180 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 17 [2018-12-03 16:39:39,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 16:39:39,390 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 16:39:53,616 WARN L854 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~nondet0| Int) (|ULTIMATE.start_main_#t~nondet1| Int) (v_subst_2 Int) (v_subst_1 Int)) (let ((.cse0 (* 2 |ULTIMATE.start_main_#t~nondet0|)) (.cse1 (* 2 |ULTIMATE.start_main_#t~nondet1|))) (or (= (mod (+ .cse0 .cse1 c_ULTIMATE.start_main_~y~5 c_ULTIMATE.start_main_~x~5) 4294967296) 1) (not (= 1 (mod (+ .cse0 .cse1 (* 2 v_subst_2) c_ULTIMATE.start_main_~y~5 (* 2 v_subst_1) c_ULTIMATE.start_main_~x~5) 4294967296)))))) is different from true [2018-12-03 16:39:53,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2018-12-03 16:39:53,640 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-03 16:39:53,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2018-12-03 16:39:53,641 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 16:39:53,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-03 16:39:53,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-03 16:39:53,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=85, Unknown=7, NotChecked=20, Total=156 [2018-12-03 16:39:53,643 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 10 states. [2018-12-03 16:40:07,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 16:40:07,832 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-12-03 16:40:07,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 16:40:07,832 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 6 [2018-12-03 16:40:07,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 16:40:07,833 INFO L225 Difference]: With dead ends: 8 [2018-12-03 16:40:07,833 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 16:40:07,835 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=51, Invalid=100, Unknown=9, NotChecked=22, Total=182 [2018-12-03 16:40:07,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 16:40:07,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 16:40:07,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 16:40:07,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 16:40:07,836 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2018-12-03 16:40:07,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 16:40:07,837 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 16:40:07,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-03 16:40:07,837 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 16:40:07,837 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 16:40:07,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 16:40:08,018 WARN L180 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 19 [2018-12-03 16:40:08,040 INFO L444 ceAbstractionStarter]: At program point L33(lines 17 33) the Hoare annotation is: (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= (+ ULTIMATE.start_main_~y~5 ULTIMATE.start_main_~x~5 2) (* 2 (div (+ ULTIMATE.start_main_~y~5 (+ ULTIMATE.start_main_~x~5 2)) 2)))) (let ((.cse0 (+ ULTIMATE.start_main_~y~5 ULTIMATE.start_main_~x~5))) (and (<= .cse0 2) (= ULTIMATE.start_main_~x~5 1) (<= 2 .cse0)))) [2018-12-03 16:40:08,041 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 40) no Hoare annotation was computed. [2018-12-03 16:40:08,041 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 40) no Hoare annotation was computed. [2018-12-03 16:40:08,041 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 40) no Hoare annotation was computed. [2018-12-03 16:40:08,041 INFO L444 ceAbstractionStarter]: At program point L28(lines 28 34) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= (+ ULTIMATE.start_main_~y~5 ULTIMATE.start_main_~x~5 2) (* 2 (div (+ ULTIMATE.start_main_~y~5 (+ ULTIMATE.start_main_~x~5 2)) 2)))) [2018-12-03 16:40:08,042 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 39) no Hoare annotation was computed. [2018-12-03 16:40:08,042 INFO L444 ceAbstractionStarter]: At program point L37(lines 37 38) the Hoare annotation is: false [2018-12-03 16:40:08,054 INFO L202 PluginConnector]: Adding new model jain_2.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 04:40:08 BoogieIcfgContainer [2018-12-03 16:40:08,057 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 16:40:08,058 INFO L168 Benchmark]: Toolchain (without parser) took 30914.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 118.9 MB). Peak memory consumption was 118.9 MB. Max. memory is 7.1 GB. [2018-12-03 16:40:08,059 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 16:40:08,060 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.07 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. [2018-12-03 16:40:08,061 INFO L168 Benchmark]: Boogie Preprocessor took 24.51 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. [2018-12-03 16:40:08,061 INFO L168 Benchmark]: RCFGBuilder took 313.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-12-03 16:40:08,063 INFO L168 Benchmark]: TraceAbstraction took 30535.76 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. [2018-12-03 16:40:08,067 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 37.07 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. * Boogie Preprocessor took 24.51 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. * RCFGBuilder took 313.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30535.76 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (1 == __VERIFIER_assert_~cond && main_~y~5 + main_~x~5 + 2 <= 2 * ((main_~y~5 + (main_~x~5 + 2)) / 2)) || ((main_~y~5 + main_~x~5 <= 2 && main_~x~5 == 1) && 2 <= main_~y~5 + main_~x~5) - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 == __VERIFIER_assert_~cond && main_~y~5 + main_~x~5 + 2 <= 2 * ((main_~y~5 + (main_~x~5 + 2)) / 2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. SAFE Result, 30.4s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 14.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 5 SDtfs, 8 SDslu, 5 SDs, 0 SdLazy, 20 SolverSat, 6 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 6.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 23.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 6 NumberOfFragments, 52 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 47 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 15.3s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 18 ConstructedInterpolants, 5 QuantifiedInterpolants, 915 SizeOfPredicates, 10 NumberOfNonLiveVariables, 26 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...