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_9.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-502d2f4 [2018-10-12 21:09:33,621 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 21:09:33,623 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 21:09:33,635 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-12 21:09:33,635 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-12 21:09:33,639 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-12 21:09:33,641 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-12 21:09:33,644 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-12 21:09:33,646 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-12 21:09:33,647 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-12 21:09:33,648 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-12 21:09:33,690 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 21:09:33,699 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 21:09:33,699 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 21:09:33,700 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 21:09:33,700 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 21:09:33,701 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 21:09:33,701 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 21:09:33,702 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 21:09:33,702 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 21:09:33,702 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 21:09:33,702 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 21:09:33,702 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 21:09:33,702 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 21:09:33,703 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 21:09:33,703 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 21:09:33,704 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 21:09:33,757 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 21:09:33,771 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 21:09:33,775 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 21:09:33,776 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 21:09:33,777 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 21:09:33,778 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_9.bpl [2018-10-12 21:09:33,778 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_9.bpl' [2018-10-12 21:09:33,844 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 21:09:33,846 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-12 21:09:33,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 21:09:33,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 21:09:33,847 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 21:09:33,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:33" (1/1) ... [2018-10-12 21:09:33,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:33" (1/1) ... [2018-10-12 21:09:33,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:33" (1/1) ... [2018-10-12 21:09:33,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:33" (1/1) ... [2018-10-12 21:09:33,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:33" (1/1) ... [2018-10-12 21:09:33,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:33" (1/1) ... [2018-10-12 21:09:33,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:33" (1/1) ... [2018-10-12 21:09:33,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 21:09:33,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 21:09:33,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 21:09:33,909 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 21:09:33,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:33" (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 21:09:33,983 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 21:09:33,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 21:09:33,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 21:09:34,587 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 21:09:34,588 INFO L202 PluginConnector]: Adding new model openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:09:34 BoogieIcfgContainer [2018-10-12 21:09:34,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 21:09:34,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 21:09:34,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 21:09:34,593 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 21:09:34,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:33" (1/2) ... [2018-10-12 21:09:34,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb93a7 and model type openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:09:34, skipping insertion in model container [2018-10-12 21:09:34,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:09:34" (2/2) ... [2018-10-12 21:09:34,596 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_9.bpl [2018-10-12 21:09:34,606 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 21:09:34,615 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 21:09:34,633 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 21:09:34,662 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 21:09:34,663 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 21:09:34,663 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 21:09:34,663 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 21:09:34,663 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 21:09:34,664 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 21:09:34,664 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 21:09:34,664 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 21:09:34,664 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 21:09:34,684 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2018-10-12 21:09:34,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-12 21:09:34,700 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:09:34,702 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:09:34,703 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:09:34,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:09:34,713 INFO L82 PathProgramCache]: Analyzing trace with hash -326719468, now seen corresponding path program 1 times [2018-10-12 21:09:34,777 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:09:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:09:35,783 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 21:09:35,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 21:09:35,786 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-10-12 21:09:35,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-12 21:09:35,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-12 21:09:35,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-10-12 21:09:35,812 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 13 states. [2018-10-12 21:09:36,378 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-12 21:09:37,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:09:37,328 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-10-12 21:09:37,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-12 21:09:37,330 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 81 [2018-10-12 21:09:37,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:09:37,355 INFO L225 Difference]: With dead ends: 110 [2018-10-12 21:09:37,355 INFO L226 Difference]: Without dead ends: 110 [2018-10-12 21:09:37,359 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2018-10-12 21:09:37,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-10-12 21:09:37,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 97. [2018-10-12 21:09:37,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-12 21:09:37,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-12 21:09:37,427 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 81 [2018-10-12 21:09:37,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:09:37,428 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-12 21:09:37,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-12 21:09:37,429 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-12 21:09:37,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-12 21:09:37,435 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:09:37,435 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 21:09:37,436 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:09:37,436 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:09:37,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1370114332, now seen corresponding path program 1 times [2018-10-12 21:09:37,438 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:09:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:09:38,139 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 24 [2018-10-12 21:09:38,347 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-12 21:09:38,874 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 21:09:38,874 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:09:38,875 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-12 21:09:38,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-12 21:09:38,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-12 21:09:38,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2018-10-12 21:09:38,881 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 22 states. [2018-10-12 21:09:40,578 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2018-10-12 21:09:40,722 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2018-10-12 21:09:40,947 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2018-10-12 21:09:41,136 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2018-10-12 21:09:41,474 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2018-10-12 21:09:41,675 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2018-10-12 21:09:41,863 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2018-10-12 21:09:42,459 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2018-10-12 21:09:42,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:09:42,889 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-10-12 21:09:42,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-12 21:09:42,890 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 96 [2018-10-12 21:09:42,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:09:42,893 INFO L225 Difference]: With dead ends: 125 [2018-10-12 21:09:42,893 INFO L226 Difference]: Without dead ends: 125 [2018-10-12 21:09:42,896 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=490, Invalid=1402, Unknown=0, NotChecked=0, Total=1892 [2018-10-12 21:09:42,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-10-12 21:09:42,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 112. [2018-10-12 21:09:42,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-10-12 21:09:42,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-10-12 21:09:42,907 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 96 [2018-10-12 21:09:42,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:09:42,908 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-10-12 21:09:42,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-12 21:09:42,908 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-10-12 21:09:42,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-12 21:09:42,911 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:09:42,911 INFO L375 BasicCegarLoop]: trace histogram [3, 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, 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 21:09:42,912 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:09:42,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:09:42,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1967992340, now seen corresponding path program 2 times [2018-10-12 21:09:42,913 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:09:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:09:44,071 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:09:44,071 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:09:44,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-12 21:09:44,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-12 21:09:44,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-12 21:09:44,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=546, Unknown=0, NotChecked=0, Total=600 [2018-10-12 21:09:44,073 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 25 states. [2018-10-12 21:09:45,606 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2018-10-12 21:09:45,796 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2018-10-12 21:09:45,994 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2018-10-12 21:09:46,270 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2018-10-12 21:09:46,485 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-12 21:09:47,040 WARN L178 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 94 [2018-10-12 21:09:47,609 WARN L178 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 106 [2018-10-12 21:09:48,081 WARN L178 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 104 [2018-10-12 21:09:48,587 WARN L178 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 107 [2018-10-12 21:09:48,982 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 110 [2018-10-12 21:09:49,468 WARN L178 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 113 [2018-10-12 21:09:49,812 WARN L178 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2018-10-12 21:09:50,396 WARN L178 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 96 [2018-10-12 21:09:50,687 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2018-10-12 21:09:51,016 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 88 [2018-10-12 21:09:51,179 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2018-10-12 21:09:51,366 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2018-10-12 21:09:51,620 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2018-10-12 21:09:51,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:09:51,689 INFO L93 Difference]: Finished difference Result 140 states and 140 transitions. [2018-10-12 21:09:51,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-12 21:09:51,692 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 111 [2018-10-12 21:09:51,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:09:51,694 INFO L225 Difference]: With dead ends: 140 [2018-10-12 21:09:51,694 INFO L226 Difference]: Without dead ends: 140 [2018-10-12 21:09:51,696 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=548, Invalid=1902, Unknown=0, NotChecked=0, Total=2450 [2018-10-12 21:09:51,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-10-12 21:09:51,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 127. [2018-10-12 21:09:51,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-12 21:09:51,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-10-12 21:09:51,705 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 111 [2018-10-12 21:09:51,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:09:51,706 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-10-12 21:09:51,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-12 21:09:51,706 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-10-12 21:09:51,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-12 21:09:51,708 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:09:51,709 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:09:51,709 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:09:51,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:09:51,710 INFO L82 PathProgramCache]: Analyzing trace with hash 452096228, now seen corresponding path program 3 times [2018-10-12 21:09:51,711 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:09:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:09:52,431 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-12 21:09:52,432 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:09:52,432 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-12 21:09:52,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-12 21:09:52,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-12 21:09:52,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2018-10-12 21:09:52,434 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 22 states. [2018-10-12 21:09:53,772 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2018-10-12 21:09:53,999 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 89 [2018-10-12 21:09:54,244 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 87 [2018-10-12 21:09:54,538 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 90 [2018-10-12 21:09:54,811 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 93 [2018-10-12 21:09:55,110 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 96 [2018-10-12 21:09:55,356 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2018-10-12 21:09:55,586 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2018-10-12 21:09:55,771 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2018-10-12 21:09:56,007 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2018-10-12 21:09:56,288 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2018-10-12 21:09:56,555 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 90 [2018-10-12 21:09:56,885 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 93 [2018-10-12 21:09:57,232 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 96 [2018-10-12 21:09:57,566 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 99 [2018-10-12 21:09:57,813 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 85 [2018-10-12 21:09:58,047 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2018-10-12 21:09:58,233 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2018-10-12 21:09:58,465 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2018-10-12 21:09:58,722 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 83 [2018-10-12 21:09:58,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:09:58,729 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-10-12 21:09:58,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-12 21:09:58,730 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 126 [2018-10-12 21:09:58,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:09:58,731 INFO L225 Difference]: With dead ends: 125 [2018-10-12 21:09:58,731 INFO L226 Difference]: Without dead ends: 0 [2018-10-12 21:09:58,733 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=769, Invalid=1781, Unknown=0, NotChecked=0, Total=2550 [2018-10-12 21:09:58,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-12 21:09:58,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-12 21:09:58,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-12 21:09:58,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-12 21:09:58,735 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 126 [2018-10-12 21:09:58,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:09:58,735 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-12 21:09:58,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-12 21:09:58,735 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-12 21:09:58,736 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-12 21:09:58,746 INFO L202 PluginConnector]: Adding new model openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 09:09:58 BoogieIcfgContainer [2018-10-12 21:09:58,746 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-12 21:09:58,747 INFO L168 Benchmark]: Toolchain (without parser) took 24901.87 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 244.3 MB). Free memory was 1.4 GB in the beginning and 922.7 MB in the end (delta: 526.7 MB). Peak memory consumption was 771.0 MB. Max. memory is 7.1 GB. [2018-10-12 21:09:58,748 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-12 21:09:58,749 INFO L168 Benchmark]: Boogie Preprocessor took 61.05 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-12 21:09:58,749 INFO L168 Benchmark]: RCFGBuilder took 679.64 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-12 21:09:58,750 INFO L168 Benchmark]: TraceAbstraction took 24156.70 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 244.3 MB). Free memory was 1.4 GB in the beginning and 922.7 MB in the end (delta: 495.0 MB). Peak memory consumption was 739.3 MB. Max. memory is 7.1 GB. [2018-10-12 21:09:58,754 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 61.05 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 679.64 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24156.70 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 244.3 MB). Free memory was 1.4 GB in the beginning and 922.7 MB in the end (delta: 495.0 MB). Peak memory consumption was 739.3 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, 24.0s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 19.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 289 SDtfs, 2815 SDslu, 2759 SDs, 0 SdLazy, 2173 SolverSat, 75 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 174 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 18.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred 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, 39 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 414 NumberOfCodeBlocks, 414 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 410 ConstructedInterpolants, 0 QuantifiedInterpolants, 521515 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 19/90 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_9.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-12_21-09-58-765.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_9.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-12_21-09-58-765.csv Received shutdown request...