java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml -s ../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf -i ../../../trunk/examples/programs/20181010-MemSafetyPathprograms/array01-alloca_true-valid-memsafety_true-termination.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-093a8c0 [2018-10-14 16:34:49,601 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 16:34:49,603 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 16:34:49,615 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 16:34:49,615 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 16:34:49,616 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 16:34:49,617 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 16:34:49,619 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 16:34:49,621 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 16:34:49,622 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 16:34:49,623 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-14 16:34:49,623 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-14 16:34:49,624 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-14 16:34:49,625 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-14 16:34:49,626 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-14 16:34:49,627 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-14 16:34:49,628 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-14 16:34:49,629 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-14 16:34:49,631 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-14 16:34:49,633 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-14 16:34:49,634 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-14 16:34:49,635 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-14 16:34:49,638 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-14 16:34:49,647 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-14 16:34:49,656 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 16:34:49,657 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 16:34:49,657 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 16:34:49,658 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 16:34:49,658 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 16:34:49,658 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 16:34:49,659 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 16:34:49,659 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 16:34:49,659 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 16:34:49,659 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 16:34:49,659 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 16:34:49,660 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 16:34:49,660 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 16:34:49,662 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 16:34:49,662 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 16:34:49,726 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 16:34:49,741 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 16:34:49,745 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 16:34:49,747 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 16:34:49,748 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 16:34:49,748 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/array01-alloca_true-valid-memsafety_true-termination.i_4.bpl [2018-10-14 16:34:49,749 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/array01-alloca_true-valid-memsafety_true-termination.i_4.bpl' [2018-10-14 16:34:49,824 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 16:34:49,826 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-14 16:34:49,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 16:34:49,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 16:34:49,828 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 16:34:49,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "array01-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:49" (1/1) ... [2018-10-14 16:34:49,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "array01-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:49" (1/1) ... [2018-10-14 16:34:49,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "array01-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:49" (1/1) ... [2018-10-14 16:34:49,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "array01-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:49" (1/1) ... [2018-10-14 16:34:49,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "array01-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:49" (1/1) ... [2018-10-14 16:34:49,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "array01-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:49" (1/1) ... [2018-10-14 16:34:49,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "array01-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:49" (1/1) ... [2018-10-14 16:34:49,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 16:34:49,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 16:34:49,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 16:34:49,894 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 16:34:49,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "array01-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:49" (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:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-14 16:34:49,970 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 16:34:49,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 16:34:49,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 16:34:50,427 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 16:34:50,427 INFO L202 PluginConnector]: Adding new model array01-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:34:50 BoogieIcfgContainer [2018-10-14 16:34:50,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 16:34:50,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 16:34:50,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 16:34:50,434 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 16:34:50,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array01-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:49" (1/2) ... [2018-10-14 16:34:50,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a8c65ec and model type array01-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:34:50, skipping insertion in model container [2018-10-14 16:34:50,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array01-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:34:50" (2/2) ... [2018-10-14 16:34:50,438 INFO L112 eAbstractionObserver]: Analyzing ICFG array01-alloca_true-valid-memsafety_true-termination.i_4.bpl [2018-10-14 16:34:50,451 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 16:34:50,462 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 16:34:50,484 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 16:34:50,518 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 16:34:50,519 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 16:34:50,519 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 16:34:50,519 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 16:34:50,519 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 16:34:50,520 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 16:34:50,521 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 16:34:50,521 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 16:34:50,521 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 16:34:50,543 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-10-14 16:34:50,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-14 16:34:50,561 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:50,563 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:34:50,564 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:50,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:50,574 INFO L82 PathProgramCache]: Analyzing trace with hash 798520925, now seen corresponding path program 1 times [2018-10-14 16:34:50,639 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:51,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:51,441 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:34:51,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-10-14 16:34:51,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-14 16:34:51,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-14 16:34:51,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2018-10-14 16:34:51,467 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 12 states. [2018-10-14 16:34:52,170 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-10-14 16:34:52,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:52,613 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-14 16:34:52,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-14 16:34:52,616 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2018-10-14 16:34:52,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:52,630 INFO L225 Difference]: With dead ends: 57 [2018-10-14 16:34:52,630 INFO L226 Difference]: Without dead ends: 57 [2018-10-14 16:34:52,633 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2018-10-14 16:34:52,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-14 16:34:52,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2018-10-14 16:34:52,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-14 16:34:52,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-10-14 16:34:52,676 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 33 [2018-10-14 16:34:52,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:52,676 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-10-14 16:34:52,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-14 16:34:52,677 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-10-14 16:34:52,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-14 16:34:52,678 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:52,679 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:34:52,679 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:52,680 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:52,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1541378607, now seen corresponding path program 1 times [2018-10-14 16:34:52,681 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:53,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:53,192 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:34:53,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-10-14 16:34:53,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-14 16:34:53,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-14 16:34:53,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2018-10-14 16:34:53,198 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 15 states. [2018-10-14 16:34:55,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:55,035 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-10-14 16:34:55,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-14 16:34:55,036 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 47 [2018-10-14 16:34:55,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:55,041 INFO L225 Difference]: With dead ends: 74 [2018-10-14 16:34:55,042 INFO L226 Difference]: Without dead ends: 74 [2018-10-14 16:34:55,045 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=221, Invalid=535, Unknown=0, NotChecked=0, Total=756 [2018-10-14 16:34:55,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-14 16:34:55,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 62. [2018-10-14 16:34:55,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-10-14 16:34:55,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-10-14 16:34:55,061 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 47 [2018-10-14 16:34:55,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:55,062 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-10-14 16:34:55,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-14 16:34:55,062 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-10-14 16:34:55,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-14 16:34:55,064 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:55,065 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:34:55,065 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:55,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:55,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1957148091, now seen corresponding path program 2 times [2018-10-14 16:34:55,067 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:55,569 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:55,569 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:34:55,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-10-14 16:34:55,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-14 16:34:55,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-14 16:34:55,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2018-10-14 16:34:55,571 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 18 states. [2018-10-14 16:34:57,157 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-10-14 16:34:57,513 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2018-10-14 16:34:57,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:57,625 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-10-14 16:34:57,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-14 16:34:57,625 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 61 [2018-10-14 16:34:57,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:57,627 INFO L225 Difference]: With dead ends: 72 [2018-10-14 16:34:57,627 INFO L226 Difference]: Without dead ends: 0 [2018-10-14 16:34:57,628 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=389, Invalid=943, Unknown=0, NotChecked=0, Total=1332 [2018-10-14 16:34:57,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-14 16:34:57,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-14 16:34:57,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-14 16:34:57,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-14 16:34:57,629 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2018-10-14 16:34:57,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:57,629 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-14 16:34:57,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-14 16:34:57,629 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-14 16:34:57,630 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-14 16:34:57,635 INFO L202 PluginConnector]: Adding new model array01-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:34:57 BoogieIcfgContainer [2018-10-14 16:34:57,636 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-14 16:34:57,636 INFO L168 Benchmark]: Toolchain (without parser) took 7811.54 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 27.3 MB). Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -12.8 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2018-10-14 16:34:57,638 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 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. [2018-10-14 16:34:57,638 INFO L168 Benchmark]: Boogie Preprocessor took 65.97 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. [2018-10-14 16:34:57,639 INFO L168 Benchmark]: RCFGBuilder took 534.41 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. [2018-10-14 16:34:57,640 INFO L168 Benchmark]: TraceAbstraction took 7206.21 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 27.3 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -33.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-14 16:34:57,644 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 0.21 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 65.97 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 534.41 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 7206.21 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 27.3 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -33.9 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 101]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 46 locations, 1 error locations. SAFE Result, 7.1s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 5.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 107 SDtfs, 1096 SDslu, 492 SDs, 0 SdLazy, 470 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 21 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 138 ConstructedInterpolants, 0 QuantifiedInterpolants, 62272 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/26 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/array01-alloca_true-valid-memsafety_true-termination.i_4.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-14_16-34-57-655.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/array01-alloca_true-valid-memsafety_true-termination.i_4.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-14_16-34-57-655.csv Received shutdown request...