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/diff-alloca_true-valid-memsafety_true-termination.i_14.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:32:49,045 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:32:49,047 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:32:49,064 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:32:49,066 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:32:49,067 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:32:49,070 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:32:49,072 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:32:49,073 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:32:49,074 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:32:49,075 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 15:32:49,075 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 15:32:49,076 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 15:32:49,077 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 15:32:49,078 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 15:32:49,079 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 15:32:49,080 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 15:32:49,082 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 15:32:49,084 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 15:32:49,086 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 15:32:49,087 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 15:32:49,088 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 15:32:49,090 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-10 15:32:49,091 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-10 15:32:49,091 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-10 15:32:49,092 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-10 15:32:49,093 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-10 15:32:49,093 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-10 15:32:49,094 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-10 15:32:49,095 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-10 15:32:49,095 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-10 15:32:49,096 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-10 15:32:49,096 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-10 15:32:49,097 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-10 15:32:49,098 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-10 15:32:49,098 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-10 15:32:49,099 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 15:32:49,108 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:32:49,109 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:32:49,109 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:32:49,110 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:32:49,110 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:32:49,110 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:32:49,111 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:32:49,111 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:32:49,111 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:32:49,111 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:32:49,112 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:32:49,112 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:32:49,112 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:32:49,113 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:32:49,113 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:32:49,163 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:32:49,181 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:32:49,186 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:32:49,188 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:32:49,188 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:32:49,189 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/diff-alloca_true-valid-memsafety_true-termination.i_14.bpl [2018-10-10 15:32:49,189 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/diff-alloca_true-valid-memsafety_true-termination.i_14.bpl' [2018-10-10 15:32:49,282 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:32:49,284 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:32:49,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:32:49,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:32:49,285 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:32:49,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "diff-alloca_true-valid-memsafety_true-termination.i_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:32:49" (1/1) ... [2018-10-10 15:32:49,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "diff-alloca_true-valid-memsafety_true-termination.i_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:32:49" (1/1) ... [2018-10-10 15:32:49,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "diff-alloca_true-valid-memsafety_true-termination.i_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:32:49" (1/1) ... [2018-10-10 15:32:49,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "diff-alloca_true-valid-memsafety_true-termination.i_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:32:49" (1/1) ... [2018-10-10 15:32:49,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "diff-alloca_true-valid-memsafety_true-termination.i_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:32:49" (1/1) ... [2018-10-10 15:32:49,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "diff-alloca_true-valid-memsafety_true-termination.i_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:32:49" (1/1) ... [2018-10-10 15:32:49,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "diff-alloca_true-valid-memsafety_true-termination.i_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:32:49" (1/1) ... [2018-10-10 15:32:49,372 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:32:49,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:32:49,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:32:49,377 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:32:49,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "diff-alloca_true-valid-memsafety_true-termination.i_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:32:49" (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 15:32:49,460 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:32:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:32:49,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:32:50,179 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:32:50,180 INFO L202 PluginConnector]: Adding new model diff-alloca_true-valid-memsafety_true-termination.i_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:32:50 BoogieIcfgContainer [2018-10-10 15:32:50,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:32:50,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:32:50,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:32:50,184 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:32:50,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "diff-alloca_true-valid-memsafety_true-termination.i_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:32:49" (1/2) ... [2018-10-10 15:32:50,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ac39de and model type diff-alloca_true-valid-memsafety_true-termination.i_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:32:50, skipping insertion in model container [2018-10-10 15:32:50,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "diff-alloca_true-valid-memsafety_true-termination.i_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:32:50" (2/2) ... [2018-10-10 15:32:50,188 INFO L112 eAbstractionObserver]: Analyzing ICFG diff-alloca_true-valid-memsafety_true-termination.i_14.bpl [2018-10-10 15:32:50,198 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:32:50,206 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:32:50,220 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:32:50,246 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:32:50,246 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:32:50,247 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:32:50,247 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:32:50,247 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:32:50,247 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:32:50,247 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:32:50,247 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:32:50,248 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:32:50,268 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states. [2018-10-10 15:32:50,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-10 15:32:50,280 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:32:50,281 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:32:50,283 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:32:50,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:32:50,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1229679545, now seen corresponding path program 1 times [2018-10-10 15:32:50,341 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:32:50,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:32:50,900 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 15:32:50,903 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:32:50,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-10 15:32:50,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-10 15:32:50,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-10 15:32:50,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-10-10 15:32:50,929 INFO L87 Difference]: Start difference. First operand 112 states. Second operand 8 states. [2018-10-10 15:32:51,197 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 15:32:51,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:32:51,287 INFO L93 Difference]: Finished difference Result 132 states and 133 transitions. [2018-10-10 15:32:51,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-10 15:32:51,289 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 76 [2018-10-10 15:32:51,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:32:51,303 INFO L225 Difference]: With dead ends: 132 [2018-10-10 15:32:51,303 INFO L226 Difference]: Without dead ends: 132 [2018-10-10 15:32:51,306 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2018-10-10 15:32:51,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-10-10 15:32:51,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 111. [2018-10-10 15:32:51,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-10 15:32:51,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2018-10-10 15:32:51,354 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 76 [2018-10-10 15:32:51,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:32:51,355 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2018-10-10 15:32:51,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-10 15:32:51,356 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2018-10-10 15:32:51,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-10 15:32:51,359 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:32:51,360 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:32:51,360 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:32:51,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:32:51,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1878659430, now seen corresponding path program 1 times [2018-10-10 15:32:51,362 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:32:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:32:51,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-10 15:32:51,984 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:32:51,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-10-10 15:32:51,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-10 15:32:51,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-10 15:32:51,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2018-10-10 15:32:51,988 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 12 states. [2018-10-10 15:32:53,250 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-10-10 15:32:53,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:32:53,430 INFO L93 Difference]: Finished difference Result 158 states and 160 transitions. [2018-10-10 15:32:53,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-10 15:32:53,431 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 99 [2018-10-10 15:32:53,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:32:53,436 INFO L225 Difference]: With dead ends: 158 [2018-10-10 15:32:53,437 INFO L226 Difference]: Without dead ends: 158 [2018-10-10 15:32:53,439 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2018-10-10 15:32:53,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-10-10 15:32:53,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 151. [2018-10-10 15:32:53,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-10 15:32:53,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 153 transitions. [2018-10-10 15:32:53,453 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 153 transitions. Word has length 99 [2018-10-10 15:32:53,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:32:53,454 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 153 transitions. [2018-10-10 15:32:53,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-10 15:32:53,454 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 153 transitions. [2018-10-10 15:32:53,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-10 15:32:53,460 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:32:53,460 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:32:53,460 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:32:53,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:32:53,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1748554681, now seen corresponding path program 1 times [2018-10-10 15:32:53,462 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:32:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:32:54,343 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-10 15:32:54,343 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:32:54,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-10 15:32:54,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-10 15:32:54,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-10 15:32:54,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2018-10-10 15:32:54,345 INFO L87 Difference]: Start difference. First operand 151 states and 153 transitions. Second operand 19 states. [2018-10-10 15:32:55,869 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-10-10 15:32:56,729 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-10-10 15:32:57,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:32:57,197 INFO L93 Difference]: Finished difference Result 251 states and 255 transitions. [2018-10-10 15:32:57,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-10 15:32:57,204 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 150 [2018-10-10 15:32:57,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:32:57,207 INFO L225 Difference]: With dead ends: 251 [2018-10-10 15:32:57,207 INFO L226 Difference]: Without dead ends: 251 [2018-10-10 15:32:57,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=328, Invalid=1004, Unknown=0, NotChecked=0, Total=1332 [2018-10-10 15:32:57,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-10-10 15:32:57,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 202. [2018-10-10 15:32:57,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-10-10 15:32:57,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 205 transitions. [2018-10-10 15:32:57,237 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 205 transitions. Word has length 150 [2018-10-10 15:32:57,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:32:57,238 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 205 transitions. [2018-10-10 15:32:57,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-10 15:32:57,241 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 205 transitions. [2018-10-10 15:32:57,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-10 15:32:57,247 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:32:57,247 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:32:57,248 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:32:57,248 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:32:57,248 INFO L82 PathProgramCache]: Analyzing trace with hash 714023290, now seen corresponding path program 2 times [2018-10-10 15:32:57,250 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:32:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:32:58,586 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 135 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-10 15:32:58,586 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:32:58,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-10 15:32:58,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-10 15:32:58,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-10 15:32:58,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2018-10-10 15:32:58,588 INFO L87 Difference]: Start difference. First operand 202 states and 205 transitions. Second operand 23 states. [2018-10-10 15:33:00,251 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-10-10 15:33:02,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:33:02,293 INFO L93 Difference]: Finished difference Result 249 states and 253 transitions. [2018-10-10 15:33:02,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-10 15:33:02,293 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 201 [2018-10-10 15:33:02,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:33:02,295 INFO L225 Difference]: With dead ends: 249 [2018-10-10 15:33:02,295 INFO L226 Difference]: Without dead ends: 0 [2018-10-10 15:33:02,297 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=597, Invalid=2055, Unknown=0, NotChecked=0, Total=2652 [2018-10-10 15:33:02,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-10 15:33:02,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-10 15:33:02,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-10 15:33:02,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-10 15:33:02,298 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 201 [2018-10-10 15:33:02,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:33:02,299 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-10 15:33:02,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-10 15:33:02,299 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-10 15:33:02,299 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-10 15:33:02,305 INFO L202 PluginConnector]: Adding new model diff-alloca_true-valid-memsafety_true-termination.i_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 03:33:02 BoogieIcfgContainer [2018-10-10 15:33:02,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 15:33:02,306 INFO L168 Benchmark]: Toolchain (without parser) took 13023.33 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 133.7 MB). Free memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: -138.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 15:33:02,307 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 15:33:02,308 INFO L168 Benchmark]: Boogie Preprocessor took 91.43 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 15:33:02,308 INFO L168 Benchmark]: RCFGBuilder took 803.53 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 15:33:02,309 INFO L168 Benchmark]: TraceAbstraction took 12123.88 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 133.7 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -169.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 15:33:02,313 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 91.43 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 803.53 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 12123.88 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 133.7 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -169.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 204]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 112 locations, 1 error locations. SAFE Result, 12.0s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 8.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 549 SDtfs, 4278 SDslu, 3393 SDs, 0 SdLazy, 1693 SolverSat, 84 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 7.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=202occurred 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, 77 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 526 NumberOfCodeBlocks, 526 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 522 ConstructedInterpolants, 0 QuantifiedInterpolants, 932105 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 8/185 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/diff-alloca_true-valid-memsafety_true-termination.i_14.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-10_15-33-02-324.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/diff-alloca_true-valid-memsafety_true-termination.i_14.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-10_15-33-02-324.csv Received shutdown request...