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_27.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-093a8c0 [2018-10-14 16:33:31,928 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 16:33:31,931 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 16:33:31,950 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 16:33:31,950 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 16:33:31,952 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 16:33:31,953 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 16:33:31,957 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 16:33:31,959 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 16:33:31,960 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 16:33:31,963 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-14 16:33:31,963 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-14 16:33:31,964 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-14 16:33:31,965 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-14 16:33:31,969 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-14 16:33:31,970 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-14 16:33:31,971 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-14 16:33:31,981 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-14 16:33:31,984 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-14 16:33:31,989 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-14 16:33:31,992 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-14 16:33:31,993 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-14 16:33:31,999 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-14 16:33:31,999 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-14 16:33:31,999 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-14 16:33:32,001 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-14 16:33:32,002 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-14 16:33:32,003 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-14 16:33:32,003 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-14 16:33:32,007 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-14 16:33:32,007 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-14 16:33:32,008 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-14 16:33:32,008 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-14 16:33:32,010 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-14 16:33:32,011 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-14 16:33:32,012 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-14 16:33:32,013 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-14 16:33:32,031 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 16:33:32,032 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 16:33:32,032 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 16:33:32,033 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 16:33:32,033 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 16:33:32,033 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 16:33:32,034 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 16:33:32,034 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 16:33:32,035 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 16:33:32,035 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 16:33:32,035 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 16:33:32,035 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 16:33:32,035 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 16:33:32,040 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 16:33:32,040 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 16:33:32,108 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 16:33:32,127 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 16:33:32,131 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 16:33:32,133 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 16:33:32,134 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 16:33:32,135 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_27.bpl [2018-10-14 16:33:32,135 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_27.bpl' [2018-10-14 16:33:32,238 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 16:33:32,239 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-14 16:33:32,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 16:33:32,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 16:33:32,240 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 16:33:32,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_27.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:32" (1/1) ... [2018-10-14 16:33:32,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_27.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:32" (1/1) ... [2018-10-14 16:33:32,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_27.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:32" (1/1) ... [2018-10-14 16:33:32,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_27.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:32" (1/1) ... [2018-10-14 16:33:32,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_27.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:32" (1/1) ... [2018-10-14 16:33:32,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_27.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:32" (1/1) ... [2018-10-14 16:33:32,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_27.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:32" (1/1) ... [2018-10-14 16:33:32,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 16:33:32,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 16:33:32,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 16:33:32,323 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 16:33:32,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "alternating_list_true-unreach-call_true-valid-memsafety.i_27.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-14 16:33:32,387 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 16:33:32,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 16:33:32,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 16:33:33,058 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 16:33:33,059 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_27.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:33:33 BoogieIcfgContainer [2018-10-14 16:33:33,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 16:33:33,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 16:33:33,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 16:33:33,063 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 16:33:33,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_27.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:32" (1/2) ... [2018-10-14 16:33:33,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@259d5415 and model type alternating_list_true-unreach-call_true-valid-memsafety.i_27.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:33:33, skipping insertion in model container [2018-10-14 16:33:33,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_27.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:33:33" (2/2) ... [2018-10-14 16:33:33,067 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_27.bpl [2018-10-14 16:33:33,077 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 16:33:33,085 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 16:33:33,103 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 16:33:33,133 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 16:33:33,133 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 16:33:33,134 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 16:33:33,134 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 16:33:33,134 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 16:33:33,134 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 16:33:33,134 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 16:33:33,134 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 16:33:33,135 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 16:33:33,154 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2018-10-14 16:33:33,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-14 16:33:33,175 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:33,176 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] [2018-10-14 16:33:33,177 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:33,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:33,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1179049478, now seen corresponding path program 1 times [2018-10-14 16:33:33,248 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:33,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:33:33,630 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:33:33,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-14 16:33:33,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-14 16:33:33,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-14 16:33:33,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-14 16:33:33,658 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 7 states. [2018-10-14 16:33:34,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:34,320 INFO L93 Difference]: Finished difference Result 126 states and 128 transitions. [2018-10-14 16:33:34,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-14 16:33:34,322 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2018-10-14 16:33:34,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:34,335 INFO L225 Difference]: With dead ends: 126 [2018-10-14 16:33:34,335 INFO L226 Difference]: Without dead ends: 113 [2018-10-14 16:33:34,337 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-10-14 16:33:34,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-14 16:33:34,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 89. [2018-10-14 16:33:34,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-14 16:33:34,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2018-10-14 16:33:34,383 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 36 [2018-10-14 16:33:34,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:34,384 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2018-10-14 16:33:34,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-14 16:33:34,384 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2018-10-14 16:33:34,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-14 16:33:34,387 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:34,388 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] [2018-10-14 16:33:34,388 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:34,389 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:34,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1953131118, now seen corresponding path program 1 times [2018-10-14 16:33:34,390 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:34,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:33:34,778 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:33:34,778 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-14 16:33:34,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-14 16:33:34,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-14 16:33:34,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-10-14 16:33:34,785 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand 8 states. [2018-10-14 16:33:35,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:35,417 INFO L93 Difference]: Finished difference Result 188 states and 191 transitions. [2018-10-14 16:33:35,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-14 16:33:35,417 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2018-10-14 16:33:35,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:35,423 INFO L225 Difference]: With dead ends: 188 [2018-10-14 16:33:35,424 INFO L226 Difference]: Without dead ends: 175 [2018-10-14 16:33:35,426 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2018-10-14 16:33:35,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-10-14 16:33:35,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 141. [2018-10-14 16:33:35,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-14 16:33:35,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 143 transitions. [2018-10-14 16:33:35,445 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 143 transitions. Word has length 79 [2018-10-14 16:33:35,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:35,446 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 143 transitions. [2018-10-14 16:33:35,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-14 16:33:35,446 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 143 transitions. [2018-10-14 16:33:35,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-14 16:33:35,451 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:35,451 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] [2018-10-14 16:33:35,452 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:35,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:35,452 INFO L82 PathProgramCache]: Analyzing trace with hash 635167098, now seen corresponding path program 2 times [2018-10-14 16:33:35,453 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:35,653 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:33:35,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:33:35,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-14 16:33:35,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-14 16:33:35,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-14 16:33:35,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-14 16:33:35,656 INFO L87 Difference]: Start difference. First operand 141 states and 143 transitions. Second operand 3 states. [2018-10-14 16:33:35,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:35,767 INFO L93 Difference]: Finished difference Result 218 states and 221 transitions. [2018-10-14 16:33:35,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-14 16:33:35,768 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2018-10-14 16:33:35,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:35,770 INFO L225 Difference]: With dead ends: 218 [2018-10-14 16:33:35,770 INFO L226 Difference]: Without dead ends: 218 [2018-10-14 16:33:35,771 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 [2018-10-14 16:33:35,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-10-14 16:33:35,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 207. [2018-10-14 16:33:35,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-10-14 16:33:35,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 210 transitions. [2018-10-14 16:33:35,787 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 210 transitions. Word has length 122 [2018-10-14 16:33:35,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:35,788 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 210 transitions. [2018-10-14 16:33:35,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-14 16:33:35,788 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 210 transitions. [2018-10-14 16:33:35,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-14 16:33:35,794 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:35,794 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] [2018-10-14 16:33:35,795 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:35,795 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:35,795 INFO L82 PathProgramCache]: Analyzing trace with hash -285839270, now seen corresponding path program 1 times [2018-10-14 16:33:35,796 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:36,127 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-14 16:33:36,128 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:33:36,128 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-14 16:33:36,129 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-14 16:33:36,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-14 16:33:36,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-10-14 16:33:36,130 INFO L87 Difference]: Start difference. First operand 207 states and 210 transitions. Second operand 10 states. [2018-10-14 16:33:36,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:36,739 INFO L93 Difference]: Finished difference Result 255 states and 259 transitions. [2018-10-14 16:33:36,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-14 16:33:36,740 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 122 [2018-10-14 16:33:36,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:36,741 INFO L225 Difference]: With dead ends: 255 [2018-10-14 16:33:36,741 INFO L226 Difference]: Without dead ends: 0 [2018-10-14 16:33:36,742 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2018-10-14 16:33:36,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-14 16:33:36,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-14 16:33:36,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-14 16:33:36,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-14 16:33:36,743 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 122 [2018-10-14 16:33:36,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:36,743 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-14 16:33:36,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-14 16:33:36,745 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-14 16:33:36,745 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-14 16:33:36,751 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_27.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:33:36 BoogieIcfgContainer [2018-10-14 16:33:36,751 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-14 16:33:36,752 INFO L168 Benchmark]: Toolchain (without parser) took 4513.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-14 16:33:36,755 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-14 16:33:36,755 INFO L168 Benchmark]: Boogie Preprocessor took 82.08 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-14 16:33:36,758 INFO L168 Benchmark]: RCFGBuilder took 736.54 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. [2018-10-14 16:33:36,759 INFO L168 Benchmark]: TraceAbstraction took 3691.12 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 222.0 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. [2018-10-14 16:33:36,764 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 0.22 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 82.08 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 736.54 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 3691.12 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 222.0 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 121]: 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, 89 locations, 1 error locations. SAFE Result, 3.6s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 2.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 402 SDtfs, 625 SDslu, 1259 SDs, 0 SdLazy, 576 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=207occurred 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, 69 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 359 NumberOfCodeBlocks, 359 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 355 ConstructedInterpolants, 0 QuantifiedInterpolants, 108339 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 59/87 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_27.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-14_16-33-36-783.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/alternating_list_true-unreach-call_true-valid-memsafety.i_27.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-14_16-33-36-783.csv Received shutdown request...