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_26.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:26:06,094 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:26:06,097 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:26:06,109 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:26:06,109 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:26:06,110 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:26:06,112 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:26:06,113 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:26:06,115 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:26:06,116 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:26:06,117 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 15:26:06,117 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 15:26:06,118 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 15:26:06,119 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 15:26:06,120 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 15:26:06,121 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 15:26:06,122 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 15:26:06,124 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 15:26:06,126 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 15:26:06,127 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 15:26:06,128 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 15:26:06,129 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 15:26:06,132 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-10 15:26:06,147 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 15:26:06,166 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:26:06,166 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:26:06,167 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:26:06,167 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:26:06,167 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:26:06,168 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:26:06,168 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:26:06,168 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:26:06,169 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:26:06,169 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:26:06,169 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:26:06,169 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:26:06,169 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:26:06,170 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:26:06,170 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:26:06,214 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:26:06,230 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:26:06,237 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:26:06,238 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:26:06,239 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:26:06,240 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_26.bpl [2018-10-10 15:26:06,240 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_26.bpl' [2018-10-10 15:26:06,333 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:26:06,335 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:26:06,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:26:06,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:26:06,336 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:26:06,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_26.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:06" (1/1) ... [2018-10-10 15:26:06,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_26.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:06" (1/1) ... [2018-10-10 15:26:06,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_26.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:06" (1/1) ... [2018-10-10 15:26:06,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_26.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:06" (1/1) ... [2018-10-10 15:26:06,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_26.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:06" (1/1) ... [2018-10-10 15:26:06,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_26.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:06" (1/1) ... [2018-10-10 15:26:06,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_26.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:06" (1/1) ... [2018-10-10 15:26:06,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:26:06,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:26:06,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:26:06,430 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:26:06,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "alternating_list_true-unreach-call_true-valid-memsafety.i_26.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:06" (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 15:26:06,517 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:26:06,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:26:06,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:26:07,271 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:26:07,272 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_26.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:26:07 BoogieIcfgContainer [2018-10-10 15:26:07,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:26:07,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:26:07,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:26:07,278 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:26:07,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_26.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:06" (1/2) ... [2018-10-10 15:26:07,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef2d91 and model type alternating_list_true-unreach-call_true-valid-memsafety.i_26.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:26:07, skipping insertion in model container [2018-10-10 15:26:07,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_26.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:26:07" (2/2) ... [2018-10-10 15:26:07,282 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_26.bpl [2018-10-10 15:26:07,291 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:26:07,304 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:26:07,321 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:26:07,346 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:26:07,347 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:26:07,347 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:26:07,347 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:26:07,348 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:26:07,348 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:26:07,348 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:26:07,348 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:26:07,348 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:26:07,371 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2018-10-10 15:26:07,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-10 15:26:07,381 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:07,382 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] [2018-10-10 15:26:07,384 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:07,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:07,391 INFO L82 PathProgramCache]: Analyzing trace with hash 2105526386, now seen corresponding path program 1 times [2018-10-10 15:26:07,442 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:07,969 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 15:26:07,971 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:26:07,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-10 15:26:07,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 15:26:07,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 15:26:07,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-10-10 15:26:07,998 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 9 states. [2018-10-10 15:26:08,443 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-10-10 15:26:09,033 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-10 15:26:09,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:09,706 INFO L93 Difference]: Finished difference Result 203 states and 205 transitions. [2018-10-10 15:26:09,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-10 15:26:09,708 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2018-10-10 15:26:09,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:09,723 INFO L225 Difference]: With dead ends: 203 [2018-10-10 15:26:09,724 INFO L226 Difference]: Without dead ends: 203 [2018-10-10 15:26:09,726 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2018-10-10 15:26:09,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-10 15:26:09,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 124. [2018-10-10 15:26:09,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-10-10 15:26:09,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 126 transitions. [2018-10-10 15:26:09,777 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 126 transitions. Word has length 37 [2018-10-10 15:26:09,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:09,777 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 126 transitions. [2018-10-10 15:26:09,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 15:26:09,778 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 126 transitions. [2018-10-10 15:26:09,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-10 15:26:09,781 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:09,781 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] [2018-10-10 15:26:09,782 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:09,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:09,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1833913374, now seen corresponding path program 1 times [2018-10-10 15:26:09,784 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:10,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:10,100 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:26:10,100 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-10 15:26:10,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 15:26:10,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 15:26:10,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-10 15:26:10,104 INFO L87 Difference]: Start difference. First operand 124 states and 126 transitions. Second operand 9 states. [2018-10-10 15:26:10,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:10,942 INFO L93 Difference]: Finished difference Result 215 states and 216 transitions. [2018-10-10 15:26:10,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-10 15:26:10,943 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2018-10-10 15:26:10,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:10,946 INFO L225 Difference]: With dead ends: 215 [2018-10-10 15:26:10,947 INFO L226 Difference]: Without dead ends: 183 [2018-10-10 15:26:10,948 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-10-10 15:26:10,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-10 15:26:10,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 110. [2018-10-10 15:26:10,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-10 15:26:10,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 111 transitions. [2018-10-10 15:26:10,960 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 111 transitions. Word has length 69 [2018-10-10 15:26:10,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:10,961 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 111 transitions. [2018-10-10 15:26:10,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 15:26:10,961 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 111 transitions. [2018-10-10 15:26:10,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-10 15:26:10,966 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:10,967 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] [2018-10-10 15:26:10,967 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:10,967 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:10,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1685929666, now seen corresponding path program 1 times [2018-10-10 15:26:10,969 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:11,303 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 15:26:11,303 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:26:11,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-10 15:26:11,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-10 15:26:11,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-10 15:26:11,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-10-10 15:26:11,306 INFO L87 Difference]: Start difference. First operand 110 states and 111 transitions. Second operand 11 states. [2018-10-10 15:26:12,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:12,631 INFO L93 Difference]: Finished difference Result 288 states and 290 transitions. [2018-10-10 15:26:12,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-10 15:26:12,638 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2018-10-10 15:26:12,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:12,642 INFO L225 Difference]: With dead ends: 288 [2018-10-10 15:26:12,646 INFO L226 Difference]: Without dead ends: 288 [2018-10-10 15:26:12,647 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2018-10-10 15:26:12,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2018-10-10 15:26:12,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 167. [2018-10-10 15:26:12,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-10-10 15:26:12,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 169 transitions. [2018-10-10 15:26:12,676 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 169 transitions. Word has length 80 [2018-10-10 15:26:12,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:12,678 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 169 transitions. [2018-10-10 15:26:12,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-10 15:26:12,678 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 169 transitions. [2018-10-10 15:26:12,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-10 15:26:12,682 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:12,682 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:26:12,685 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:12,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:12,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1857911982, now seen corresponding path program 1 times [2018-10-10 15:26:12,686 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:14,104 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:14,105 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:26:14,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-10 15:26:14,105 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-10 15:26:14,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-10 15:26:14,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=745, Unknown=0, NotChecked=0, Total=812 [2018-10-10 15:26:14,107 INFO L87 Difference]: Start difference. First operand 167 states and 169 transitions. Second operand 29 states. [2018-10-10 15:26:15,525 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2018-10-10 15:26:15,755 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2018-10-10 15:26:15,968 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2018-10-10 15:26:16,148 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2018-10-10 15:26:16,439 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-10 15:26:16,722 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2018-10-10 15:26:17,084 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 87 [2018-10-10 15:26:19,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:19,581 INFO L93 Difference]: Finished difference Result 278 states and 280 transitions. [2018-10-10 15:26:19,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-10 15:26:19,586 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 112 [2018-10-10 15:26:19,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:19,588 INFO L225 Difference]: With dead ends: 278 [2018-10-10 15:26:19,589 INFO L226 Difference]: Without dead ends: 278 [2018-10-10 15:26:19,591 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=538, Invalid=3002, Unknown=0, NotChecked=0, Total=3540 [2018-10-10 15:26:19,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-10-10 15:26:19,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 199. [2018-10-10 15:26:19,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-10 15:26:19,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 201 transitions. [2018-10-10 15:26:19,607 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 201 transitions. Word has length 112 [2018-10-10 15:26:19,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:19,607 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 201 transitions. [2018-10-10 15:26:19,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-10 15:26:19,608 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 201 transitions. [2018-10-10 15:26:19,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-10 15:26:19,610 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:19,610 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, 1] [2018-10-10 15:26:19,611 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:19,611 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:19,611 INFO L82 PathProgramCache]: Analyzing trace with hash -356990734, now seen corresponding path program 2 times [2018-10-10 15:26:19,612 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:19,695 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 15:26:19,696 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:26:19,696 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 15:26:19,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 15:26:19,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 15:26:19,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:26:19,697 INFO L87 Difference]: Start difference. First operand 199 states and 201 transitions. Second operand 3 states. [2018-10-10 15:26:19,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:19,732 INFO L93 Difference]: Finished difference Result 121 states and 120 transitions. [2018-10-10 15:26:19,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 15:26:19,733 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 123 [2018-10-10 15:26:19,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:19,733 INFO L225 Difference]: With dead ends: 121 [2018-10-10 15:26:19,733 INFO L226 Difference]: Without dead ends: 0 [2018-10-10 15:26:19,734 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 15:26:19,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-10 15:26:19,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-10 15:26:19,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-10 15:26:19,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-10 15:26:19,735 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 123 [2018-10-10 15:26:19,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:19,736 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-10 15:26:19,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 15:26:19,736 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-10 15:26:19,736 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-10 15:26:19,741 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_26.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 03:26:19 BoogieIcfgContainer [2018-10-10 15:26:19,741 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 15:26:19,742 INFO L168 Benchmark]: Toolchain (without parser) took 13408.53 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 111.1 MB). Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -57.0 MB). Peak memory consumption was 54.2 MB. Max. memory is 7.1 GB. [2018-10-10 15:26:19,743 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 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 15:26:19,744 INFO L168 Benchmark]: Boogie Preprocessor took 94.09 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 15:26:19,745 INFO L168 Benchmark]: RCFGBuilder took 842.39 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 15:26:19,745 INFO L168 Benchmark]: TraceAbstraction took 12467.78 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 111.1 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -88.7 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2018-10-10 15:26:19,749 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 0.21 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 94.09 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 842.39 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 12467.78 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 111.1 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -88.7 MB). Peak memory consumption was 22.5 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, 12.4s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 9.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 464 SDtfs, 3763 SDslu, 2766 SDs, 0 SdLazy, 2454 SolverSat, 117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 120 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=199occurred 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, 352 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 421 NumberOfCodeBlocks, 421 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 416 ConstructedInterpolants, 0 QuantifiedInterpolants, 347310 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 50/57 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_26.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-10_15-26-19-761.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/alternating_list_true-unreach-call_true-valid-memsafety.i_26.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-10_15-26-19-761.csv Received shutdown request...