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/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_7.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:17:32,091 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:17:32,094 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:17:32,105 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:17:32,106 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:17:32,107 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:17:32,108 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:17:32,110 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:17:32,111 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:17:32,112 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:17:32,113 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 15:17:32,113 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 15:17:32,114 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 15:17:32,117 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 15:17:32,118 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 15:17:32,119 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 15:17:32,120 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 15:17:32,126 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 15:17:32,128 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 15:17:32,130 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 15:17:32,131 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 15:17:32,132 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 15:17:32,135 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-10 15:17:32,143 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 15:17:32,153 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:17:32,153 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:17:32,154 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:17:32,154 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:17:32,155 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:17:32,155 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:17:32,155 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:17:32,156 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:17:32,156 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:17:32,156 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:17:32,156 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:17:32,157 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:17:32,157 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:17:32,158 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:17:32,158 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:17:32,200 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:17:32,213 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:17:32,217 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:17:32,219 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:17:32,219 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:17:32,220 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_7.bpl [2018-10-10 15:17:32,221 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_7.bpl' [2018-10-10 15:17:32,295 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:17:32,297 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:17:32,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:17:32,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:17:32,298 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:17:32,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:17:32" (1/1) ... [2018-10-10 15:17:32,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:17:32" (1/1) ... [2018-10-10 15:17:32,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:17:32" (1/1) ... [2018-10-10 15:17:32,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:17:32" (1/1) ... [2018-10-10 15:17:32,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:17:32" (1/1) ... [2018-10-10 15:17:32,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:17:32" (1/1) ... [2018-10-10 15:17:32,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:17:32" (1/1) ... [2018-10-10 15:17:32,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:17:32,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:17:32,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:17:32,361 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:17:32,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:17:32" (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 [2018-10-10 15:17:32,421 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:17:32,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:17:32,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:17:33,196 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:17:33,197 INFO L202 PluginConnector]: Adding new model ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:17:33 BoogieIcfgContainer [2018-10-10 15:17:33,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:17:33,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:17:33,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:17:33,201 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:17:33,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:17:32" (1/2) ... [2018-10-10 15:17:33,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c6315b and model type ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:17:33, skipping insertion in model container [2018-10-10 15:17:33,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:17:33" (2/2) ... [2018-10-10 15:17:33,205 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_7.bpl [2018-10-10 15:17:33,215 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:17:33,224 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:17:33,241 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:17:33,275 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:17:33,276 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:17:33,276 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:17:33,277 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:17:33,277 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:17:33,277 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:17:33,277 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:17:33,277 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:17:33,277 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:17:33,295 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2018-10-10 15:17:33,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-10 15:17:33,305 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:17:33,307 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] [2018-10-10 15:17:33,308 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:17:33,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:17:33,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1655646054, now seen corresponding path program 1 times [2018-10-10 15:17:33,377 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:17:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:17:33,526 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 15:17:33,529 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:17:33,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 15:17:33,534 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 15:17:33,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 15:17:33,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:17:33,554 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 3 states. [2018-10-10 15:17:33,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:17:33,675 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-10-10 15:17:33,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 15:17:33,677 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2018-10-10 15:17:33,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:17:33,688 INFO L225 Difference]: With dead ends: 68 [2018-10-10 15:17:33,688 INFO L226 Difference]: Without dead ends: 68 [2018-10-10 15:17:33,691 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 15:17:33,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-10 15:17:33,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2018-10-10 15:17:33,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-10 15:17:33,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-10-10 15:17:33,728 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 40 [2018-10-10 15:17:33,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:17:33,729 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-10-10 15:17:33,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 15:17:33,730 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-10-10 15:17:33,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-10 15:17:33,732 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:17:33,732 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] [2018-10-10 15:17:33,732 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:17:33,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:17:33,733 INFO L82 PathProgramCache]: Analyzing trace with hash 618195291, now seen corresponding path program 1 times [2018-10-10 15:17:33,734 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:17:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:17:33,873 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 15:17:33,873 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:17:33,874 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-10-10 15:17:33,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-10 15:17:33,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-10 15:17:33,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-10 15:17:33,877 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 5 states. [2018-10-10 15:17:34,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:17:34,291 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-10 15:17:34,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-10 15:17:34,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2018-10-10 15:17:34,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:17:34,295 INFO L225 Difference]: With dead ends: 83 [2018-10-10 15:17:34,295 INFO L226 Difference]: Without dead ends: 83 [2018-10-10 15:17:34,296 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-10 15:17:34,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-10 15:17:34,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 71. [2018-10-10 15:17:34,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-10 15:17:34,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-10 15:17:34,305 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 55 [2018-10-10 15:17:34,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:17:34,306 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-10 15:17:34,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-10 15:17:34,306 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-10 15:17:34,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-10 15:17:34,309 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:17:34,309 INFO L375 BasicCegarLoop]: trace histogram [3, 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] [2018-10-10 15:17:34,310 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:17:34,310 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:17:34,310 INFO L82 PathProgramCache]: Analyzing trace with hash -2073141562, now seen corresponding path program 2 times [2018-10-10 15:17:34,311 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:17:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:17:34,519 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:17:34,519 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:17:34,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-10-10 15:17:34,520 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-10 15:17:34,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-10 15:17:34,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-10 15:17:34,521 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 7 states. [2018-10-10 15:17:34,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:17:34,902 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-10-10 15:17:34,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-10 15:17:34,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2018-10-10 15:17:34,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:17:34,905 INFO L225 Difference]: With dead ends: 98 [2018-10-10 15:17:34,905 INFO L226 Difference]: Without dead ends: 98 [2018-10-10 15:17:34,906 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-10-10 15:17:34,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-10-10 15:17:34,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 86. [2018-10-10 15:17:34,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-10-10 15:17:34,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-10-10 15:17:34,917 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 70 [2018-10-10 15:17:34,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:17:34,918 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-10-10 15:17:34,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-10 15:17:34,918 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-10-10 15:17:34,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-10 15:17:34,921 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:17:34,922 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:17:34,922 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:17:34,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:17:34,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1519912443, now seen corresponding path program 3 times [2018-10-10 15:17:34,923 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:17:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:17:35,612 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 19 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:17:35,613 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:17:35,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-10-10 15:17:35,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-10 15:17:35,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-10 15:17:35,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-10-10 15:17:35,616 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 12 states. [2018-10-10 15:17:36,274 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-10 15:17:36,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:17:36,426 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-10-10 15:17:36,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-10 15:17:36,427 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 85 [2018-10-10 15:17:36,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:17:36,428 INFO L225 Difference]: With dead ends: 96 [2018-10-10 15:17:36,428 INFO L226 Difference]: Without dead ends: 0 [2018-10-10 15:17:36,429 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2018-10-10 15:17:36,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-10 15:17:36,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-10 15:17:36,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-10 15:17:36,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-10 15:17:36,430 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 85 [2018-10-10 15:17:36,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:17:36,431 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-10 15:17:36,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-10 15:17:36,431 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-10 15:17:36,431 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-10 15:17:36,437 INFO L202 PluginConnector]: Adding new model ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 03:17:36 BoogieIcfgContainer [2018-10-10 15:17:36,437 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 15:17:36,438 INFO L168 Benchmark]: Toolchain (without parser) took 4142.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 179.8 MB). Peak memory consumption was 179.8 MB. Max. memory is 7.1 GB. [2018-10-10 15:17:36,439 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 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 15:17:36,440 INFO L168 Benchmark]: Boogie Preprocessor took 62.54 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 15:17:36,441 INFO L168 Benchmark]: RCFGBuilder took 836.14 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-10 15:17:36,442 INFO L168 Benchmark]: TraceAbstraction took 3239.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 158.6 MB). Peak memory consumption was 158.6 MB. Max. memory is 7.1 GB. [2018-10-10 15:17:36,446 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 0.19 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 62.54 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 836.14 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3239.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 158.6 MB). Peak memory consumption was 158.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 111]: 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, 56 locations, 1 error locations. SAFE Result, 3.1s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 243 SDtfs, 129 SDslu, 716 SDs, 0 SdLazy, 300 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=86occurred 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, 36 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 250 NumberOfCodeBlocks, 250 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 246 ConstructedInterpolants, 0 QuantifiedInterpolants, 53142 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 19/72 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/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_7.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-10_15-17-36-458.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_7.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-10_15-17-36-458.csv Received shutdown request...