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_8.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-502d2f4 [2018-10-12 20:44:50,925 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 20:44:50,927 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 20:44:50,943 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-12 20:44:50,943 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-12 20:44:50,944 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-12 20:44:50,946 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-12 20:44:50,947 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-12 20:44:50,949 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-12 20:44:50,950 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-12 20:44:50,951 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-12 20:44:50,951 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-12 20:44:50,952 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-12 20:44:50,953 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-12 20:44:50,954 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-12 20:44:50,955 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-12 20:44:50,956 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-12 20:44:50,958 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-12 20:44:50,960 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-12 20:44:50,961 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-12 20:44:50,962 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-12 20:44:50,964 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-12 20:44:50,967 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-12 20:44:50,975 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-12 20:44:50,985 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 20:44:50,985 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 20:44:50,986 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 20:44:50,986 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 20:44:50,986 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 20:44:50,987 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 20:44:50,988 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 20:44:50,988 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 20:44:50,988 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 20:44:50,988 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 20:44:50,989 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 20:44:50,989 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 20:44:50,989 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 20:44:50,991 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 20:44:50,991 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 20:44:51,039 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 20:44:51,054 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 20:44:51,060 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 20:44:51,061 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 20:44:51,062 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 20:44:51,063 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_8.bpl [2018-10-12 20:44:51,063 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_8.bpl' [2018-10-12 20:44:51,143 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 20:44:51,144 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-12 20:44:51,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 20:44:51,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 20:44:51,145 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 20:44:51,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:44:51" (1/1) ... [2018-10-12 20:44:51,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:44:51" (1/1) ... [2018-10-12 20:44:51,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:44:51" (1/1) ... [2018-10-12 20:44:51,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:44:51" (1/1) ... [2018-10-12 20:44:51,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:44:51" (1/1) ... [2018-10-12 20:44:51,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:44:51" (1/1) ... [2018-10-12 20:44:51,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:44:51" (1/1) ... [2018-10-12 20:44:51,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 20:44:51,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 20:44:51,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 20:44:51,200 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 20:44:51,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:44:51" (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 [2018-10-12 20:44:51,269 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 20:44:51,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 20:44:51,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 20:44:51,737 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 20:44:51,738 INFO L202 PluginConnector]: Adding new model ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:44:51 BoogieIcfgContainer [2018-10-12 20:44:51,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 20:44:51,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 20:44:51,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 20:44:51,743 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 20:44:51,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:44:51" (1/2) ... [2018-10-12 20:44:51,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1690286 and model type ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:44:51, skipping insertion in model container [2018-10-12 20:44:51,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:44:51" (2/2) ... [2018-10-12 20:44:51,747 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_8.bpl [2018-10-12 20:44:51,757 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 20:44:51,765 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 20:44:51,783 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 20:44:51,812 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 20:44:51,813 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 20:44:51,813 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 20:44:51,813 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 20:44:51,813 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 20:44:51,813 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 20:44:51,814 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 20:44:51,814 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 20:44:51,814 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 20:44:51,832 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2018-10-12 20:44:51,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-12 20:44:51,842 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:44:51,843 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:44:51,846 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:44:51,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:44:51,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1284945542, now seen corresponding path program 1 times [2018-10-12 20:44:51,920 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:44:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:44:52,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:44:52,193 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:44:52,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-12 20:44:52,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-12 20:44:52,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-12 20:44:52,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-12 20:44:52,215 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 5 states. [2018-10-12 20:44:52,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:44:52,494 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-10-12 20:44:52,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-12 20:44:52,496 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2018-10-12 20:44:52,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:44:52,516 INFO L225 Difference]: With dead ends: 74 [2018-10-12 20:44:52,517 INFO L226 Difference]: Without dead ends: 74 [2018-10-12 20:44:52,522 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-12 20:44:52,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-12 20:44:52,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 61. [2018-10-12 20:44:52,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-12 20:44:52,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-12 20:44:52,575 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 45 [2018-10-12 20:44:52,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:44:52,576 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-12 20:44:52,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-12 20:44:52,576 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-12 20:44:52,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-12 20:44:52,578 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:44:52,579 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:44:52,579 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:44:52,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:44:52,580 INFO L82 PathProgramCache]: Analyzing trace with hash -47689540, now seen corresponding path program 1 times [2018-10-12 20:44:52,582 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:44:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:44:52,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:44:52,891 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:44:52,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-10-12 20:44:52,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-12 20:44:52,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-12 20:44:52,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-12 20:44:52,894 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 7 states. [2018-10-12 20:44:53,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:44:53,220 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-12 20:44:53,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-12 20:44:53,224 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2018-10-12 20:44:53,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:44:53,227 INFO L225 Difference]: With dead ends: 89 [2018-10-12 20:44:53,227 INFO L226 Difference]: Without dead ends: 89 [2018-10-12 20:44:53,230 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2018-10-12 20:44:53,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-12 20:44:53,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 76. [2018-10-12 20:44:53,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-12 20:44:53,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-10-12 20:44:53,241 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 60 [2018-10-12 20:44:53,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:44:53,242 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-10-12 20:44:53,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-12 20:44:53,242 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-10-12 20:44:53,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-10-12 20:44:53,248 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:44:53,248 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-12 20:44:53,249 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:44:53,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:44:53,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1286882246, now seen corresponding path program 2 times [2018-10-12 20:44:53,251 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:44:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:44:53,531 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:44:53,532 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:44:53,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-10-12 20:44:53,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-12 20:44:53,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-12 20:44:53,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-12 20:44:53,534 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 9 states. [2018-10-12 20:44:53,824 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-12 20:44:54,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:44:54,340 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-10-12 20:44:54,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-12 20:44:54,342 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2018-10-12 20:44:54,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:44:54,344 INFO L225 Difference]: With dead ends: 104 [2018-10-12 20:44:54,345 INFO L226 Difference]: Without dead ends: 104 [2018-10-12 20:44:54,350 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2018-10-12 20:44:54,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-12 20:44:54,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 91. [2018-10-12 20:44:54,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-12 20:44:54,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-12 20:44:54,368 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 75 [2018-10-12 20:44:54,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:44:54,369 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-12 20:44:54,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-12 20:44:54,369 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-12 20:44:54,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-12 20:44:54,374 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:44:54,374 INFO L375 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1] [2018-10-12 20:44:54,374 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:44:54,375 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:44:54,375 INFO L82 PathProgramCache]: Analyzing trace with hash -619275396, now seen corresponding path program 3 times [2018-10-12 20:44:54,377 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:44:54,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:44:54,667 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-10-12 20:44:54,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:44:54,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-12 20:44:54,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-12 20:44:54,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-12 20:44:54,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-12 20:44:54,670 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 7 states. [2018-10-12 20:44:54,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:44:54,871 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-12 20:44:54,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-12 20:44:54,871 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2018-10-12 20:44:54,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:44:54,873 INFO L225 Difference]: With dead ends: 89 [2018-10-12 20:44:54,873 INFO L226 Difference]: Without dead ends: 0 [2018-10-12 20:44:54,874 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-10-12 20:44:54,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-12 20:44:54,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-12 20:44:54,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-12 20:44:54,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-12 20:44:54,875 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 90 [2018-10-12 20:44:54,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:44:54,875 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-12 20:44:54,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-12 20:44:54,876 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-12 20:44:54,876 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-12 20:44:54,881 INFO L202 PluginConnector]: Adding new model ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 08:44:54 BoogieIcfgContainer [2018-10-12 20:44:54,881 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-12 20:44:54,882 INFO L168 Benchmark]: Toolchain (without parser) took 3739.11 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: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2018-10-12 20:44:54,884 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 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. [2018-10-12 20:44:54,885 INFO L168 Benchmark]: Boogie Preprocessor took 53.62 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. [2018-10-12 20:44:54,886 INFO L168 Benchmark]: RCFGBuilder took 539.24 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-12 20:44:54,887 INFO L168 Benchmark]: TraceAbstraction took 3142.03 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 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. [2018-10-12 20:44:54,891 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.24 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 53.62 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 539.24 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3142.03 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 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: 122]: 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, 62 locations, 1 error locations. SAFE Result, 3.0s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 1.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 203 SDtfs, 518 SDslu, 527 SDs, 0 SdLazy, 174 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred 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, 39 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 270 NumberOfCodeBlocks, 270 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 266 ConstructedInterpolants, 0 QuantifiedInterpolants, 66089 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 48/66 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_8.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-12_20-44-54-904.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_8.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-12_20-44-54-904.csv Received shutdown request...