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_34.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:26:14,916 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:26:14,919 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:26:14,935 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:26:14,936 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:26:14,937 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:26:14,938 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:26:14,940 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:26:14,942 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:26:14,942 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:26:14,943 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 15:26:14,944 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 15:26:14,944 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 15:26:14,945 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 15:26:14,947 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 15:26:14,947 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 15:26:14,948 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 15:26:14,950 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 15:26:14,952 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 15:26:14,953 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 15:26:14,954 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 15:26:14,956 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 15:26:14,960 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-10 15:26:14,960 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-10 15:26:14,961 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-10 15:26:14,962 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-10 15:26:14,965 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-10 15:26:14,966 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-10 15:26:14,967 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-10 15:26:14,971 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-10 15:26:14,972 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-10 15:26:14,973 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-10 15:26:14,973 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-10 15:26:14,973 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-10 15:26:14,976 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-10 15:26:14,977 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-10 15:26:14,977 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 15:26:14,993 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:26:14,994 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:26:14,995 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:26:14,995 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:26:14,995 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:26:14,995 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:26:14,997 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:26:14,997 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:26:14,997 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:26:14,997 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:26:14,998 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:26:14,998 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:26:14,998 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:26:15,000 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:26:15,000 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:26:15,069 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:26:15,089 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:26:15,094 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:26:15,095 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:26:15,096 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:26:15,096 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_34.bpl [2018-10-10 15:26:15,097 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_34.bpl' [2018-10-10 15:26:15,203 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:26:15,205 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:26:15,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:26:15,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:26:15,206 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:26:15,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_34.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:15" (1/1) ... [2018-10-10 15:26:15,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_34.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:15" (1/1) ... [2018-10-10 15:26:15,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_34.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:15" (1/1) ... [2018-10-10 15:26:15,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_34.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:15" (1/1) ... [2018-10-10 15:26:15,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_34.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:15" (1/1) ... [2018-10-10 15:26:15,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_34.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:15" (1/1) ... [2018-10-10 15:26:15,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_34.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:15" (1/1) ... [2018-10-10 15:26:15,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:26:15,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:26:15,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:26:15,299 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:26:15,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "alternating_list_true-unreach-call_true-valid-memsafety.i_34.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:15" (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 15:26:15,362 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:26:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:26:15,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:26:16,225 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:26:16,226 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_34.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:26:16 BoogieIcfgContainer [2018-10-10 15:26:16,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:26:16,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:26:16,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:26:16,231 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:26:16,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_34.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:15" (1/2) ... [2018-10-10 15:26:16,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467c3584 and model type alternating_list_true-unreach-call_true-valid-memsafety.i_34.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:26:16, skipping insertion in model container [2018-10-10 15:26:16,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_34.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:26:16" (2/2) ... [2018-10-10 15:26:16,235 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_34.bpl [2018-10-10 15:26:16,245 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:26:16,254 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:26:16,271 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:26:16,300 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:26:16,301 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:26:16,301 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:26:16,301 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:26:16,301 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:26:16,301 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:26:16,302 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:26:16,302 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:26:16,302 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:26:16,322 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2018-10-10 15:26:16,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-10 15:26:16,334 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:16,335 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] [2018-10-10 15:26:16,336 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:16,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:16,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1102583777, now seen corresponding path program 1 times [2018-10-10 15:26:16,393 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:16,817 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 12 [2018-10-10 15:26:16,947 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 15:26:16,950 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:26:16,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-10 15:26:16,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 15:26:16,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 15:26:16,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-10 15:26:16,976 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 9 states. [2018-10-10 15:26:17,806 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2018-10-10 15:26:18,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:18,373 INFO L93 Difference]: Finished difference Result 249 states and 253 transitions. [2018-10-10 15:26:18,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-10 15:26:18,376 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2018-10-10 15:26:18,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:18,405 INFO L225 Difference]: With dead ends: 249 [2018-10-10 15:26:18,405 INFO L226 Difference]: Without dead ends: 217 [2018-10-10 15:26:18,407 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2018-10-10 15:26:18,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-10-10 15:26:18,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 112. [2018-10-10 15:26:18,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-10-10 15:26:18,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2018-10-10 15:26:18,478 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 59 [2018-10-10 15:26:18,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:18,479 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2018-10-10 15:26:18,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 15:26:18,479 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2018-10-10 15:26:18,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-10 15:26:18,485 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:18,489 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, 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 15:26:18,489 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:18,489 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:18,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1886767533, now seen corresponding path program 1 times [2018-10-10 15:26:18,492 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:18,617 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 15:26:18,618 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:26:18,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 15:26:18,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 15:26:18,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 15:26:18,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:26:18,624 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand 3 states. [2018-10-10 15:26:18,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:18,697 INFO L93 Difference]: Finished difference Result 166 states and 168 transitions. [2018-10-10 15:26:18,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 15:26:18,700 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2018-10-10 15:26:18,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:18,704 INFO L225 Difference]: With dead ends: 166 [2018-10-10 15:26:18,705 INFO L226 Difference]: Without dead ends: 166 [2018-10-10 15:26:18,706 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 15:26:18,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-10-10 15:26:18,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 146. [2018-10-10 15:26:18,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-10-10 15:26:18,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 148 transitions. [2018-10-10 15:26:18,723 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 148 transitions. Word has length 102 [2018-10-10 15:26:18,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:18,724 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 148 transitions. [2018-10-10 15:26:18,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 15:26:18,724 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 148 transitions. [2018-10-10 15:26:18,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-10 15:26:18,726 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:18,726 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, 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 15:26:18,727 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:18,727 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:18,727 INFO L82 PathProgramCache]: Analyzing trace with hash 2016613517, now seen corresponding path program 1 times [2018-10-10 15:26:18,728 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:19,190 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 15:26:19,190 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:26:19,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-10 15:26:19,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-10 15:26:19,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-10 15:26:19,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-10-10 15:26:19,192 INFO L87 Difference]: Start difference. First operand 146 states and 148 transitions. Second operand 11 states. [2018-10-10 15:26:19,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:19,853 INFO L93 Difference]: Finished difference Result 287 states and 290 transitions. [2018-10-10 15:26:19,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-10 15:26:19,853 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2018-10-10 15:26:19,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:19,859 INFO L225 Difference]: With dead ends: 287 [2018-10-10 15:26:19,859 INFO L226 Difference]: Without dead ends: 251 [2018-10-10 15:26:19,860 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2018-10-10 15:26:19,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-10-10 15:26:19,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 189. [2018-10-10 15:26:19,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-10-10 15:26:19,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 191 transitions. [2018-10-10 15:26:19,884 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 191 transitions. Word has length 102 [2018-10-10 15:26:19,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:19,884 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 191 transitions. [2018-10-10 15:26:19,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-10 15:26:19,885 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 191 transitions. [2018-10-10 15:26:19,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-10 15:26:19,889 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:19,889 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:26:19,891 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:19,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:19,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1615600001, now seen corresponding path program 1 times [2018-10-10 15:26:19,893 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:20,808 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:20,808 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:26:20,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-10-10 15:26:20,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-10 15:26:20,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-10 15:26:20,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2018-10-10 15:26:20,810 INFO L87 Difference]: Start difference. First operand 189 states and 191 transitions. Second operand 20 states. [2018-10-10 15:26:23,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:23,112 INFO L93 Difference]: Finished difference Result 339 states and 344 transitions. [2018-10-10 15:26:23,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-10 15:26:23,119 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 145 [2018-10-10 15:26:23,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:23,122 INFO L225 Difference]: With dead ends: 339 [2018-10-10 15:26:23,122 INFO L226 Difference]: Without dead ends: 303 [2018-10-10 15:26:23,123 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=399, Invalid=1493, Unknown=0, NotChecked=0, Total=1892 [2018-10-10 15:26:23,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-10-10 15:26:23,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 273. [2018-10-10 15:26:23,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-10-10 15:26:23,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 276 transitions. [2018-10-10 15:26:23,139 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 276 transitions. Word has length 145 [2018-10-10 15:26:23,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:23,140 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 276 transitions. [2018-10-10 15:26:23,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-10 15:26:23,140 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 276 transitions. [2018-10-10 15:26:23,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-10 15:26:23,144 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:23,145 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-10 15:26:23,145 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:23,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:23,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1162497773, now seen corresponding path program 2 times [2018-10-10 15:26:23,147 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 23 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:24,133 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:26:24,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-10 15:26:24,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-10 15:26:24,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-10 15:26:24,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2018-10-10 15:26:24,135 INFO L87 Difference]: Start difference. First operand 273 states and 276 transitions. Second operand 23 states. [2018-10-10 15:26:25,262 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-10-10 15:26:26,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:26,860 INFO L93 Difference]: Finished difference Result 283 states and 286 transitions. [2018-10-10 15:26:26,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-10 15:26:26,862 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 188 [2018-10-10 15:26:26,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:26,863 INFO L225 Difference]: With dead ends: 283 [2018-10-10 15:26:26,864 INFO L226 Difference]: Without dead ends: 0 [2018-10-10 15:26:26,866 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=615, Invalid=2577, Unknown=0, NotChecked=0, Total=3192 [2018-10-10 15:26:26,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-10 15:26:26,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-10 15:26:26,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-10 15:26:26,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-10 15:26:26,874 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 188 [2018-10-10 15:26:26,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:26,874 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-10 15:26:26,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-10 15:26:26,874 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-10 15:26:26,874 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-10 15:26:26,882 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_34.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 03:26:26 BoogieIcfgContainer [2018-10-10 15:26:26,883 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 15:26:26,884 INFO L168 Benchmark]: Toolchain (without parser) took 11679.70 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 37.2 MB). Free memory was 1.5 GB in the beginning and 905.8 MB in the end (delta: 549.9 MB). Peak memory consumption was 587.1 MB. Max. memory is 7.1 GB. [2018-10-10 15:26:26,885 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 15:26:26,886 INFO L168 Benchmark]: Boogie Preprocessor took 84.93 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 15:26:26,886 INFO L168 Benchmark]: RCFGBuilder took 927.79 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 15:26:26,887 INFO L168 Benchmark]: TraceAbstraction took 10655.04 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 37.2 MB). Free memory was 1.4 GB in the beginning and 905.8 MB in the end (delta: 518.2 MB). Peak memory consumption was 555.4 MB. Max. memory is 7.1 GB. [2018-10-10 15:26:26,891 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 84.93 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 927.79 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 10655.04 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 37.2 MB). Free memory was 1.4 GB in the beginning and 905.8 MB in the end (delta: 518.2 MB). Peak memory consumption was 555.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 145]: 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, 112 locations, 1 error locations. SAFE Result, 10.5s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 7.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 607 SDtfs, 3528 SDslu, 3057 SDs, 0 SdLazy, 2032 SolverSat, 135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=273occurred 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: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 217 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 596 NumberOfCodeBlocks, 596 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 591 ConstructedInterpolants, 0 QuantifiedInterpolants, 706129 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 25/159 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_34.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-10_15-26-26-906.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/alternating_list_true-unreach-call_true-valid-memsafety.i_34.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-10_15-26-26-906.csv Received shutdown request...