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/openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:40:14,157 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:40:14,159 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:40:14,170 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:40:14,171 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:40:14,172 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:40:14,173 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:40:14,175 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:40:14,177 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:40:14,177 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:40:14,178 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 15:40:14,178 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 15:40:14,179 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 15:40:14,180 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 15:40:14,181 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 15:40:14,182 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 15:40:14,183 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 15:40:14,185 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 15:40:14,187 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 15:40:14,189 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 15:40:14,190 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 15:40:14,191 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 15:40:14,193 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-10 15:40:14,193 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-10 15:40:14,194 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-10 15:40:14,195 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-10 15:40:14,196 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-10 15:40:14,196 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-10 15:40:14,200 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-10 15:40:14,201 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-10 15:40:14,202 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-10 15:40:14,202 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-10 15:40:14,203 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-10 15:40:14,203 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-10 15:40:14,206 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-10 15:40:14,207 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-10 15:40:14,207 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 15:40:14,228 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:40:14,229 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:40:14,230 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:40:14,230 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:40:14,230 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:40:14,230 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:40:14,231 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:40:14,231 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:40:14,231 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:40:14,231 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:40:14,232 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:40:14,235 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:40:14,235 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:40:14,236 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:40:14,236 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:40:14,280 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:40:14,294 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:40:14,301 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:40:14,303 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:40:14,304 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:40:14,304 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i_3.bpl [2018-10-10 15:40:14,305 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i_3.bpl' [2018-10-10 15:40:14,393 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:40:14,395 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:40:14,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:40:14,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:40:14,396 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:40:14,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:40:14" (1/1) ... [2018-10-10 15:40:14,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:40:14" (1/1) ... [2018-10-10 15:40:14,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:40:14" (1/1) ... [2018-10-10 15:40:14,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:40:14" (1/1) ... [2018-10-10 15:40:14,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:40:14" (1/1) ... [2018-10-10 15:40:14,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:40:14" (1/1) ... [2018-10-10 15:40:14,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:40:14" (1/1) ... [2018-10-10 15:40:14,464 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:40:14,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:40:14,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:40:14,469 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:40:14,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:40:14" (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 15:40:14,552 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:40:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:40:14,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:40:15,067 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:40:15,068 INFO L202 PluginConnector]: Adding new model openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:40:15 BoogieIcfgContainer [2018-10-10 15:40:15,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:40:15,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:40:15,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:40:15,072 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:40:15,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:40:14" (1/2) ... [2018-10-10 15:40:15,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d5a9c15 and model type openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:40:15, skipping insertion in model container [2018-10-10 15:40:15,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:40:15" (2/2) ... [2018-10-10 15:40:15,076 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i_3.bpl [2018-10-10 15:40:15,086 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:40:15,098 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:40:15,112 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:40:15,140 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:40:15,141 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:40:15,141 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:40:15,142 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:40:15,142 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:40:15,142 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:40:15,142 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:40:15,142 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:40:15,142 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:40:15,162 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2018-10-10 15:40:15,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-10 15:40:15,173 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:40:15,174 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] [2018-10-10 15:40:15,175 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:40:15,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:40:15,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1966481317, now seen corresponding path program 1 times [2018-10-10 15:40:15,235 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:40:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:40:16,408 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2018-10-10 15:40:16,851 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2018-10-10 15:40:17,162 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 15:40:17,165 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:40:17,166 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2018-10-10 15:40:17,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-10 15:40:17,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-10 15:40:17,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2018-10-10 15:40:17,191 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 16 states. [2018-10-10 15:40:17,983 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2018-10-10 15:40:18,622 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2018-10-10 15:40:18,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:40:18,786 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-10 15:40:18,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-10 15:40:18,792 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2018-10-10 15:40:18,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:40:18,804 INFO L225 Difference]: With dead ends: 75 [2018-10-10 15:40:18,805 INFO L226 Difference]: Without dead ends: 75 [2018-10-10 15:40:18,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=237, Invalid=575, Unknown=0, NotChecked=0, Total=812 [2018-10-10 15:40:18,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-10 15:40:18,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 60. [2018-10-10 15:40:18,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-10 15:40:18,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-10-10 15:40:18,850 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 42 [2018-10-10 15:40:18,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:40:18,851 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-10-10 15:40:18,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-10 15:40:18,851 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-10-10 15:40:18,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-10 15:40:18,853 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:40:18,853 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-10 15:40:18,853 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:40:18,854 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:40:18,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1856581713, now seen corresponding path program 1 times [2018-10-10 15:40:18,855 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:40:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:40:19,377 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 20 [2018-10-10 15:40:19,803 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:40:19,804 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:40:19,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-10 15:40:19,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-10 15:40:19,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-10 15:40:19,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2018-10-10 15:40:19,808 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 19 states. [2018-10-10 15:40:20,676 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-10-10 15:40:21,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:40:21,445 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-10-10 15:40:21,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-10 15:40:21,445 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 59 [2018-10-10 15:40:21,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:40:21,447 INFO L225 Difference]: With dead ends: 92 [2018-10-10 15:40:21,447 INFO L226 Difference]: Without dead ends: 92 [2018-10-10 15:40:21,449 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=289, Invalid=1117, Unknown=0, NotChecked=0, Total=1406 [2018-10-10 15:40:21,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-10 15:40:21,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 77. [2018-10-10 15:40:21,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-10 15:40:21,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-10 15:40:21,462 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 59 [2018-10-10 15:40:21,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:40:21,462 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-10 15:40:21,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-10 15:40:21,464 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-10 15:40:21,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-10 15:40:21,467 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:40:21,468 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2018-10-10 15:40:21,471 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:40:21,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:40:21,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1505496357, now seen corresponding path program 2 times [2018-10-10 15:40:21,472 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:40:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:40:34,941 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:40:34,941 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:40:34,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-10 15:40:34,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-10 15:40:34,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-10 15:40:34,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=419, Unknown=1, NotChecked=0, Total=462 [2018-10-10 15:40:34,943 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 22 states. [2018-10-10 15:40:35,590 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2018-10-10 15:40:36,698 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2018-10-10 15:40:36,908 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2018-10-10 15:40:37,062 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2018-10-10 15:40:37,607 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2018-10-10 15:40:38,547 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2018-10-10 15:40:39,319 WARN L178 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2018-10-10 15:40:39,834 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 41 [2018-10-10 15:40:52,013 WARN L178 SmtUtils]: Spent 11.61 s on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2018-10-10 15:40:52,342 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2018-10-10 15:40:53,044 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2018-10-10 15:40:53,230 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2018-10-10 15:40:53,454 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2018-10-10 15:40:53,675 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2018-10-10 15:40:53,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:40:53,758 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-10-10 15:40:53,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-10 15:40:53,759 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 76 [2018-10-10 15:40:53,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:40:53,760 INFO L225 Difference]: With dead ends: 90 [2018-10-10 15:40:53,760 INFO L226 Difference]: Without dead ends: 0 [2018-10-10 15:40:53,762 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 29.2s TimeCoverageRelationStatistics Valid=554, Invalid=2097, Unknown=1, NotChecked=0, Total=2652 [2018-10-10 15:40:53,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-10 15:40:53,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-10 15:40:53,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-10 15:40:53,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-10 15:40:53,763 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76 [2018-10-10 15:40:53,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:40:53,763 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-10 15:40:53,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-10 15:40:53,763 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-10 15:40:53,763 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-10 15:40:53,769 INFO L202 PluginConnector]: Adding new model openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 03:40:53 BoogieIcfgContainer [2018-10-10 15:40:53,769 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 15:40:53,771 INFO L168 Benchmark]: Toolchain (without parser) took 39376.37 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 19.9 MB). Free memory was 1.5 GB in the beginning and 1.0 GB in the end (delta: 455.9 MB). Peak memory consumption was 475.8 MB. Max. memory is 7.1 GB. [2018-10-10 15:40:53,772 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 15:40:53,773 INFO L168 Benchmark]: Boogie Preprocessor took 72.58 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 15:40:53,774 INFO L168 Benchmark]: RCFGBuilder took 599.64 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 15:40:53,775 INFO L168 Benchmark]: TraceAbstraction took 38700.08 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 19.9 MB). Free memory was 1.5 GB in the beginning and 1.0 GB in the end (delta: 434.8 MB). Peak memory consumption was 454.7 MB. Max. memory is 7.1 GB. [2018-10-10 15:40:53,783 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.58 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 599.64 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 38700.08 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 19.9 MB). Free memory was 1.5 GB in the beginning and 1.0 GB in the end (delta: 434.8 MB). Peak memory consumption was 454.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 119]: 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, 57 locations, 1 error locations. SAFE Result, 38.6s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 22.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 137 SDtfs, 993 SDslu, 1376 SDs, 0 SdLazy, 1045 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 33.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=2, 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, 3 MinimizatonAttempts, 30 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 16.1s InterpolantComputationTime, 177 NumberOfCodeBlocks, 177 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 174 ConstructedInterpolants, 0 QuantifiedInterpolants, 121503 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/32 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/openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i_3.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-10_15-40-53-796.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i_3.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-10_15-40-53-796.csv Received shutdown request...