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/alternating_list_true-unreach-call_true-valid-memsafety.i_25.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:26:04,787 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:26:04,790 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:26:04,801 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:26:04,802 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:26:04,803 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:26:04,804 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:26:04,806 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:26:04,808 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:26:04,809 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:26:04,810 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-10 15:26:04,835 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-10 15:26:04,852 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:26:04,852 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:26:04,854 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:26:04,854 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:26:04,854 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:26:04,854 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:26:04,858 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:26:04,858 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:26:04,859 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:26:04,859 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:26:04,859 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:26:04,859 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:26:04,859 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:26:04,860 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:26:04,860 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:26:04,919 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:26:04,932 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:26:04,936 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:26:04,938 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:26:04,938 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:26:04,939 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_25.bpl [2018-10-10 15:26:04,939 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_25.bpl' [2018-10-10 15:26:05,023 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:26:05,025 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:26:05,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:26:05,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:26:05,026 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:26:05,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_25.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:05" (1/1) ... [2018-10-10 15:26:05,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_25.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:05" (1/1) ... [2018-10-10 15:26:05,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_25.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:05" (1/1) ... [2018-10-10 15:26:05,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_25.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:05" (1/1) ... [2018-10-10 15:26:05,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_25.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:05" (1/1) ... [2018-10-10 15:26:05,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_25.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:05" (1/1) ... [2018-10-10 15:26:05,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_25.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:05" (1/1) ... [2018-10-10 15:26:05,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:26:05,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:26:05,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:26:05,103 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:26:05,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "alternating_list_true-unreach-call_true-valid-memsafety.i_25.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:05" (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 [2018-10-10 15:26:05,180 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:26:05,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:26:05,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:26:05,950 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:26:05,951 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_25.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:26:05 BoogieIcfgContainer [2018-10-10 15:26:05,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:26:05,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:26:05,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:26:05,958 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:26:05,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_25.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:05" (1/2) ... [2018-10-10 15:26:05,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e462ed8 and model type alternating_list_true-unreach-call_true-valid-memsafety.i_25.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:26:05, skipping insertion in model container [2018-10-10 15:26:05,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_25.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:26:05" (2/2) ... [2018-10-10 15:26:05,961 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_25.bpl [2018-10-10 15:26:05,971 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:26:05,979 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:26:05,995 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:26:06,022 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:26:06,022 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:26:06,023 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:26:06,023 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:26:06,023 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:26:06,023 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:26:06,023 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:26:06,024 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:26:06,024 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:26:06,043 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2018-10-10 15:26:06,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-10 15:26:06,053 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:06,054 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] [2018-10-10 15:26:06,056 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:06,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:06,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1179005661, now seen corresponding path program 1 times [2018-10-10 15:26:06,116 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:06,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:06,422 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:26:06,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-10 15:26:06,427 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-10 15:26:06,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-10 15:26:06,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-10 15:26:06,447 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 7 states. [2018-10-10 15:26:07,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:07,739 INFO L93 Difference]: Finished difference Result 202 states and 204 transitions. [2018-10-10 15:26:07,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-10 15:26:07,741 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2018-10-10 15:26:07,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:07,771 INFO L225 Difference]: With dead ends: 202 [2018-10-10 15:26:07,775 INFO L226 Difference]: Without dead ends: 202 [2018-10-10 15:26:07,781 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2018-10-10 15:26:07,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-10-10 15:26:07,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 123. [2018-10-10 15:26:07,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-10 15:26:07,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 125 transitions. [2018-10-10 15:26:07,845 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 125 transitions. Word has length 36 [2018-10-10 15:26:07,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:07,846 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 125 transitions. [2018-10-10 15:26:07,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-10 15:26:07,846 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 125 transitions. [2018-10-10 15:26:07,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-10 15:26:07,849 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:07,850 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-10 15:26:07,850 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:07,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:07,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1604618318, now seen corresponding path program 1 times [2018-10-10 15:26:07,852 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:07,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:08,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:08,156 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:26:08,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-10 15:26:08,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 15:26:08,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 15:26:08,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-10 15:26:08,160 INFO L87 Difference]: Start difference. First operand 123 states and 125 transitions. Second operand 9 states. [2018-10-10 15:26:09,410 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2018-10-10 15:26:09,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:09,508 INFO L93 Difference]: Finished difference Result 215 states and 216 transitions. [2018-10-10 15:26:09,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-10 15:26:09,509 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2018-10-10 15:26:09,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:09,511 INFO L225 Difference]: With dead ends: 215 [2018-10-10 15:26:09,512 INFO L226 Difference]: Without dead ends: 183 [2018-10-10 15:26:09,513 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-10-10 15:26:09,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-10 15:26:09,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 110. [2018-10-10 15:26:09,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-10 15:26:09,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 111 transitions. [2018-10-10 15:26:09,528 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 111 transitions. Word has length 68 [2018-10-10 15:26:09,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:09,529 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 111 transitions. [2018-10-10 15:26:09,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 15:26:09,529 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 111 transitions. [2018-10-10 15:26:09,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-10 15:26:09,531 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:09,532 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-10 15:26:09,532 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:09,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:09,533 INFO L82 PathProgramCache]: Analyzing trace with hash 776899287, now seen corresponding path program 1 times [2018-10-10 15:26:09,534 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:09,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:09,709 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:26:09,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-10-10 15:26:09,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-10 15:26:09,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-10 15:26:09,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-10 15:26:09,711 INFO L87 Difference]: Start difference. First operand 110 states and 111 transitions. Second operand 7 states. [2018-10-10 15:26:10,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:10,292 INFO L93 Difference]: Finished difference Result 287 states and 289 transitions. [2018-10-10 15:26:10,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-10 15:26:10,297 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2018-10-10 15:26:10,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:10,300 INFO L225 Difference]: With dead ends: 287 [2018-10-10 15:26:10,300 INFO L226 Difference]: Without dead ends: 287 [2018-10-10 15:26:10,301 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-10-10 15:26:10,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-10-10 15:26:10,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 166. [2018-10-10 15:26:10,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-10-10 15:26:10,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 168 transitions. [2018-10-10 15:26:10,315 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 168 transitions. Word has length 79 [2018-10-10 15:26:10,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:10,316 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 168 transitions. [2018-10-10 15:26:10,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-10 15:26:10,316 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 168 transitions. [2018-10-10 15:26:10,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-10 15:26:10,319 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:10,319 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:26:10,319 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:10,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:10,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1169520130, now seen corresponding path program 1 times [2018-10-10 15:26:10,321 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:11,076 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:11,076 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:26:11,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-10-10 15:26:11,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-10 15:26:11,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-10 15:26:11,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2018-10-10 15:26:11,078 INFO L87 Difference]: Start difference. First operand 166 states and 168 transitions. Second operand 20 states. [2018-10-10 15:26:12,680 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2018-10-10 15:26:14,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:14,513 INFO L93 Difference]: Finished difference Result 357 states and 359 transitions. [2018-10-10 15:26:14,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-10 15:26:14,515 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 111 [2018-10-10 15:26:14,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:14,519 INFO L225 Difference]: With dead ends: 357 [2018-10-10 15:26:14,519 INFO L226 Difference]: Without dead ends: 357 [2018-10-10 15:26:14,521 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=656, Invalid=2424, Unknown=0, NotChecked=0, Total=3080 [2018-10-10 15:26:14,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-10-10 15:26:14,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 198. [2018-10-10 15:26:14,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-10-10 15:26:14,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 200 transitions. [2018-10-10 15:26:14,534 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 200 transitions. Word has length 111 [2018-10-10 15:26:14,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:14,535 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 200 transitions. [2018-10-10 15:26:14,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-10 15:26:14,535 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 200 transitions. [2018-10-10 15:26:14,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-10 15:26:14,537 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:14,538 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-10 15:26:14,538 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:14,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:14,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1119894365, now seen corresponding path program 2 times [2018-10-10 15:26:14,540 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:14,641 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:14,641 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:26:14,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 15:26:14,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 15:26:14,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 15:26:14,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:26:14,642 INFO L87 Difference]: Start difference. First operand 198 states and 200 transitions. Second operand 3 states. [2018-10-10 15:26:14,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:14,650 INFO L93 Difference]: Finished difference Result 121 states and 120 transitions. [2018-10-10 15:26:14,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 15:26:14,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2018-10-10 15:26:14,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:14,651 INFO L225 Difference]: With dead ends: 121 [2018-10-10 15:26:14,652 INFO L226 Difference]: Without dead ends: 0 [2018-10-10 15:26:14,653 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:26:14,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-10 15:26:14,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-10 15:26:14,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-10 15:26:14,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-10 15:26:14,654 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 122 [2018-10-10 15:26:14,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:14,654 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-10 15:26:14,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 15:26:14,654 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-10 15:26:14,655 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-10 15:26:14,660 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_25.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 03:26:14 BoogieIcfgContainer [2018-10-10 15:26:14,660 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 15:26:14,661 INFO L168 Benchmark]: Toolchain (without parser) took 9637.50 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 24.6 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 154.4 MB). Peak memory consumption was 179.0 MB. Max. memory is 7.1 GB. [2018-10-10 15:26:14,662 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 15:26:14,664 INFO L168 Benchmark]: Boogie Preprocessor took 77.13 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. [2018-10-10 15:26:14,665 INFO L168 Benchmark]: RCFGBuilder took 848.85 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. [2018-10-10 15:26:14,666 INFO L168 Benchmark]: TraceAbstraction took 8707.21 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 24.6 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 122.7 MB). Peak memory consumption was 147.3 MB. Max. memory is 7.1 GB. [2018-10-10 15:26:14,672 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.13 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 848.85 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 8707.21 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 24.6 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 122.7 MB). Peak memory consumption was 147.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 201]: 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, 110 locations, 1 error locations. SAFE Result, 8.6s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 6.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 483 SDtfs, 2866 SDslu, 2443 SDs, 0 SdLazy, 1687 SolverSat, 145 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=4, 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, 5 MinimizatonAttempts, 432 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 416 NumberOfCodeBlocks, 416 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 411 ConstructedInterpolants, 0 QuantifiedInterpolants, 185376 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 49/55 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/alternating_list_true-unreach-call_true-valid-memsafety.i_25.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-10_15-26-14-695.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/alternating_list_true-unreach-call_true-valid-memsafety.i_25.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-10_15-26-14-695.csv Received shutdown request...