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/openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_10.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-502d2f4 [2018-10-12 21:09:22,641 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 21:09:22,643 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 21:09:22,657 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-12 21:09:22,657 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-12 21:09:22,659 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-12 21:09:22,660 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-12 21:09:22,662 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-12 21:09:22,663 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-12 21:09:22,664 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-12 21:09:22,665 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-12 21:09:22,665 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-12 21:09:22,666 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-12 21:09:22,667 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-12 21:09:22,668 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-12 21:09:22,669 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-12 21:09:22,670 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-12 21:09:22,672 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-12 21:09:22,674 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-12 21:09:22,676 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-12 21:09:22,677 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-12 21:09:22,678 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-12 21:09:22,681 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-12 21:09:22,687 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-12 21:09:22,688 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-12 21:09:22,689 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-12 21:09:22,689 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-12 21:09:22,690 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-12 21:09:22,699 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 21:09:22,700 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 21:09:22,700 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 21:09:22,701 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 21:09:22,701 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 21:09:22,701 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 21:09:22,702 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 21:09:22,702 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 21:09:22,702 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 21:09:22,703 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 21:09:22,703 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 21:09:22,703 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 21:09:22,703 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 21:09:22,704 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 21:09:22,704 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 21:09:22,753 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 21:09:22,768 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 21:09:22,771 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 21:09:22,772 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 21:09:22,772 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 21:09:22,773 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_10.bpl [2018-10-12 21:09:22,773 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_10.bpl' [2018-10-12 21:09:22,847 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 21:09:22,848 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-12 21:09:22,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 21:09:22,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 21:09:22,850 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 21:09:22,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:22" (1/1) ... [2018-10-12 21:09:22,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:22" (1/1) ... [2018-10-12 21:09:22,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:22" (1/1) ... [2018-10-12 21:09:22,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:22" (1/1) ... [2018-10-12 21:09:22,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:22" (1/1) ... [2018-10-12 21:09:22,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:22" (1/1) ... [2018-10-12 21:09:22,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:22" (1/1) ... [2018-10-12 21:09:22,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 21:09:22,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 21:09:22,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 21:09:22,918 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 21:09:22,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:22" (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 [2018-10-12 21:09:22,981 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 21:09:22,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 21:09:22,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 21:09:23,616 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 21:09:23,617 INFO L202 PluginConnector]: Adding new model openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:09:23 BoogieIcfgContainer [2018-10-12 21:09:23,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 21:09:23,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 21:09:23,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 21:09:23,622 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 21:09:23,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:22" (1/2) ... [2018-10-12 21:09:23,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6749e07e and model type openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:09:23, skipping insertion in model container [2018-10-12 21:09:23,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:09:23" (2/2) ... [2018-10-12 21:09:23,626 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_10.bpl [2018-10-12 21:09:23,636 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 21:09:23,646 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 21:09:23,663 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 21:09:23,693 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 21:09:23,694 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 21:09:23,694 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 21:09:23,695 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 21:09:23,695 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 21:09:23,695 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 21:09:23,695 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 21:09:23,695 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 21:09:23,695 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 21:09:23,716 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2018-10-12 21:09:23,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-12 21:09:23,731 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:09:23,732 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, 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] [2018-10-12 21:09:23,734 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:09:23,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:09:23,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1602300283, now seen corresponding path program 1 times [2018-10-12 21:09:23,812 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:09:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:09:24,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:09:24,803 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 21:09:24,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-10-12 21:09:24,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-12 21:09:24,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-12 21:09:24,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2018-10-12 21:09:24,830 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 13 states. [2018-10-12 21:09:25,577 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-12 21:09:26,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:09:26,218 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-12 21:09:26,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-12 21:09:26,220 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2018-10-12 21:09:26,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:09:26,233 INFO L225 Difference]: With dead ends: 109 [2018-10-12 21:09:26,234 INFO L226 Difference]: Without dead ends: 109 [2018-10-12 21:09:26,237 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2018-10-12 21:09:26,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-12 21:09:26,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 97. [2018-10-12 21:09:26,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-12 21:09:26,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-12 21:09:26,285 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 67 [2018-10-12 21:09:26,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:09:26,286 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-12 21:09:26,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-12 21:09:26,286 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-12 21:09:26,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-12 21:09:26,290 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:09:26,290 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:09:26,292 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:09:26,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:09:26,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1186301042, now seen corresponding path program 1 times [2018-10-12 21:09:26,294 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:09:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:09:27,042 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2018-10-12 21:09:27,923 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:09:27,923 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:09:27,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-12 21:09:27,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-12 21:09:27,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-12 21:09:27,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=750, Unknown=0, NotChecked=0, Total=812 [2018-10-12 21:09:27,927 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 29 states. [2018-10-12 21:09:29,558 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2018-10-12 21:09:29,722 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-12 21:09:30,177 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2018-10-12 21:09:30,682 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2018-10-12 21:09:30,871 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-12 21:09:31,078 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2018-10-12 21:09:31,296 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2018-10-12 21:09:31,659 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2018-10-12 21:09:31,975 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2018-10-12 21:09:32,259 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 98 [2018-10-12 21:09:32,551 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 101 [2018-10-12 21:09:32,825 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2018-10-12 21:09:33,144 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2018-10-12 21:09:33,325 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-12 21:09:33,792 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2018-10-12 21:09:33,992 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-12 21:09:34,145 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2018-10-12 21:09:34,336 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2018-10-12 21:09:34,513 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2018-10-12 21:09:34,781 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-12 21:09:35,029 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-12 21:09:35,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:09:35,098 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2018-10-12 21:09:35,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-12 21:09:35,102 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 96 [2018-10-12 21:09:35,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:09:35,105 INFO L225 Difference]: With dead ends: 138 [2018-10-12 21:09:35,105 INFO L226 Difference]: Without dead ends: 138 [2018-10-12 21:09:35,108 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=776, Invalid=3130, Unknown=0, NotChecked=0, Total=3906 [2018-10-12 21:09:35,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-10-12 21:09:35,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 126. [2018-10-12 21:09:35,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-10-12 21:09:35,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-10-12 21:09:35,120 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 96 [2018-10-12 21:09:35,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:09:35,121 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-10-12 21:09:35,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-12 21:09:35,121 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-10-12 21:09:35,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-12 21:09:35,126 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:09:35,126 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2018-10-12 21:09:35,126 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:09:35,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:09:35,127 INFO L82 PathProgramCache]: Analyzing trace with hash -151977765, now seen corresponding path program 2 times [2018-10-12 21:09:35,128 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:09:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:09:36,856 WARN L178 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 22 [2018-10-12 21:09:37,804 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:09:37,805 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:09:37,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-10-12 21:09:37,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-12 21:09:37,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-12 21:09:37,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1319, Unknown=0, NotChecked=0, Total=1406 [2018-10-12 21:09:37,807 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 38 states. [2018-10-12 21:09:39,300 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2018-10-12 21:09:39,465 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2018-10-12 21:09:39,765 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-12 21:09:40,406 WARN L178 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-12 21:09:40,589 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2018-10-12 21:09:41,195 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-12 21:09:41,464 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2018-10-12 21:09:41,831 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2018-10-12 21:09:42,126 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2018-10-12 21:09:42,498 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 94 [2018-10-12 21:09:42,859 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 96 [2018-10-12 21:09:43,251 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2018-10-12 21:09:43,523 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 85 [2018-10-12 21:09:44,007 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 100 [2018-10-12 21:09:44,334 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 94 [2018-10-12 21:09:44,717 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 108 [2018-10-12 21:09:45,200 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 105 [2018-10-12 21:09:45,627 WARN L178 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 108 [2018-10-12 21:09:46,051 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 111 [2018-10-12 21:09:46,476 WARN L178 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 114 [2018-10-12 21:09:46,814 WARN L178 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 96 [2018-10-12 21:09:47,156 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 93 [2018-10-12 21:09:47,429 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2018-10-12 21:09:47,768 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2018-10-12 21:09:48,088 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 84 [2018-10-12 21:09:48,302 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2018-10-12 21:09:48,537 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2018-10-12 21:09:48,775 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2018-10-12 21:09:49,030 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 84 [2018-10-12 21:09:49,431 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2018-10-12 21:09:49,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:09:49,474 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-10-12 21:09:49,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-12 21:09:49,476 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 125 [2018-10-12 21:09:49,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:09:49,478 INFO L225 Difference]: With dead ends: 167 [2018-10-12 21:09:49,478 INFO L226 Difference]: Without dead ends: 167 [2018-10-12 21:09:49,480 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=961, Invalid=5201, Unknown=0, NotChecked=0, Total=6162 [2018-10-12 21:09:49,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-12 21:09:49,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 155. [2018-10-12 21:09:49,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-12 21:09:49,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-10-12 21:09:49,492 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 125 [2018-10-12 21:09:49,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:09:49,493 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-10-12 21:09:49,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-12 21:09:49,493 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-10-12 21:09:49,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-12 21:09:49,495 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:09:49,496 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:09:49,496 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:09:49,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:09:49,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1098290926, now seen corresponding path program 3 times [2018-10-12 21:09:49,497 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:09:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:09:50,061 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-12 21:09:50,254 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-12 21:09:51,383 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-10-12 21:09:51,383 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:09:51,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-12 21:09:51,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-12 21:09:51,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-12 21:09:51,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1045, Unknown=0, NotChecked=0, Total=1122 [2018-10-12 21:09:51,385 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 34 states. [2018-10-12 21:09:53,755 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2018-10-12 21:09:53,974 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2018-10-12 21:09:54,245 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 89 [2018-10-12 21:09:54,634 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 92 [2018-10-12 21:09:54,920 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 95 [2018-10-12 21:09:55,211 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 98 [2018-10-12 21:09:55,428 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2018-10-12 21:09:55,648 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2018-10-12 21:09:56,397 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-12 21:09:56,660 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 91 [2018-10-12 21:09:57,165 WARN L178 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 94 [2018-10-12 21:09:57,771 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 99 [2018-10-12 21:09:58,118 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 102 [2018-10-12 21:09:58,366 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90 [2018-10-12 21:09:58,583 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2018-10-12 21:09:58,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:09:58,594 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-10-12 21:09:58,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-12 21:09:58,595 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 154 [2018-10-12 21:09:58,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:09:58,596 INFO L225 Difference]: With dead ends: 153 [2018-10-12 21:09:58,596 INFO L226 Difference]: Without dead ends: 0 [2018-10-12 21:09:58,598 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=1029, Invalid=4373, Unknown=0, NotChecked=0, Total=5402 [2018-10-12 21:09:58,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-12 21:09:58,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-12 21:09:58,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-12 21:09:58,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-12 21:09:58,599 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 154 [2018-10-12 21:09:58,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:09:58,599 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-12 21:09:58,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-12 21:09:58,599 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-12 21:09:58,599 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-12 21:09:58,603 INFO L202 PluginConnector]: Adding new model openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 09:09:58 BoogieIcfgContainer [2018-10-12 21:09:58,604 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-12 21:09:58,604 INFO L168 Benchmark]: Toolchain (without parser) took 35757.04 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 366.0 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 146.3 MB). Peak memory consumption was 512.2 MB. Max. memory is 7.1 GB. [2018-10-12 21:09:58,606 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 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. [2018-10-12 21:09:58,606 INFO L168 Benchmark]: Boogie Preprocessor took 67.92 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. [2018-10-12 21:09:58,607 INFO L168 Benchmark]: RCFGBuilder took 699.81 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-12 21:09:58,608 INFO L168 Benchmark]: TraceAbstraction took 34985.06 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 366.0 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 114.5 MB). Peak memory consumption was 480.5 MB. Max. memory is 7.1 GB. [2018-10-12 21:09:58,613 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 0.15 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 67.92 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 699.81 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 34985.06 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 366.0 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 114.5 MB). Peak memory consumption was 480.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 167]: 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, 94 locations, 1 error locations. SAFE Result, 34.9s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 27.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 248 SDtfs, 3819 SDslu, 3370 SDs, 0 SdLazy, 3934 SolverSat, 130 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 252 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2104 ImplicationChecksByTransitivity, 27.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=155occurred in iteration=3, 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, 4 MinimizatonAttempts, 36 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 442 NumberOfCodeBlocks, 442 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 438 ConstructedInterpolants, 0 QuantifiedInterpolants, 796872 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 26/146 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/openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_10.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-12_21-09-58-625.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_10.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-12_21-09-58-625.csv Received shutdown request...