java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/gcd_2.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 10:25:25,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 10:25:25,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 10:25:25,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 10:25:25,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 10:25:25,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 10:25:25,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 10:25:25,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 10:25:25,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 10:25:25,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 10:25:25,576 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 10:25:25,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 10:25:25,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 10:25:25,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 10:25:25,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 10:25:25,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 10:25:25,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 10:25:25,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 10:25:25,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 10:25:25,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 10:25:25,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 10:25:25,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 10:25:25,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 10:25:25,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 10:25:25,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 10:25:25,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 10:25:25,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 10:25:25,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 10:25:25,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 10:25:25,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 10:25:25,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 10:25:25,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 10:25:25,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 10:25:25,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 10:25:25,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 10:25:25,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 10:25:25,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 10:25:25,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 10:25:25,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 10:25:25,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 10:25:25,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 10:25:25,639 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 10:25:25,651 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 10:25:25,655 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 10:25:25,656 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 10:25:25,656 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 10:25:25,657 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/gcd_2.i_4.bpl [2019-08-05 10:25:25,657 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/gcd_2.i_4.bpl' [2019-08-05 10:25:25,690 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 10:25:25,691 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 10:25:25,692 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 10:25:25,692 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 10:25:25,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 10:25:25,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "gcd_2.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:25:25" (1/1) ... [2019-08-05 10:25:25,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "gcd_2.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:25:25" (1/1) ... [2019-08-05 10:25:25,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 10:25:25,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 10:25:25,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 10:25:25,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 10:25:25,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "gcd_2.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:25:25" (1/1) ... [2019-08-05 10:25:25,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "gcd_2.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:25:25" (1/1) ... [2019-08-05 10:25:25,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "gcd_2.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:25:25" (1/1) ... [2019-08-05 10:25:25,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "gcd_2.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:25:25" (1/1) ... [2019-08-05 10:25:25,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "gcd_2.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:25:25" (1/1) ... [2019-08-05 10:25:25,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "gcd_2.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:25:25" (1/1) ... [2019-08-05 10:25:25,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "gcd_2.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:25:25" (1/1) ... [2019-08-05 10:25:25,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 10:25:25,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 10:25:25,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 10:25:25,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 10:25:25,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "gcd_2.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:25:25" (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 [2019-08-05 10:25:25,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-05 10:25:25,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-05 10:25:26,107 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-05 10:25:26,107 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-08-05 10:25:26,108 INFO L202 PluginConnector]: Adding new model gcd_2.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:25:26 BoogieIcfgContainer [2019-08-05 10:25:26,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 10:25:26,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 10:25:26,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 10:25:26,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 10:25:26,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "gcd_2.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:25:25" (1/2) ... [2019-08-05 10:25:26,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36856a04 and model type gcd_2.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 10:25:26, skipping insertion in model container [2019-08-05 10:25:26,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "gcd_2.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:25:26" (2/2) ... [2019-08-05 10:25:26,120 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd_2.i_4.bpl [2019-08-05 10:25:26,131 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 10:25:26,140 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 10:25:26,157 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 10:25:26,188 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 10:25:26,188 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 10:25:26,189 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 10:25:26,189 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 10:25:26,189 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 10:25:26,189 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 10:25:26,189 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 10:25:26,189 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 10:25:26,190 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 10:25:26,200 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2019-08-05 10:25:26,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-08-05 10:25:26,211 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:25:26,212 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-08-05 10:25:26,215 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:25:26,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:25:26,224 INFO L82 PathProgramCache]: Analyzing trace with hash 29955, now seen corresponding path program 1 times [2019-08-05 10:25:26,267 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:25:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:25:26,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2019-08-05 10:25:26,325 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:25:26,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:25:26,402 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:25:26,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 10:25:26,407 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 10:25:26,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 10:25:26,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:25:26,425 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2019-08-05 10:25:26,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:25:26,475 INFO L93 Difference]: Finished difference Result 5 states and 5 transitions. [2019-08-05 10:25:26,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 10:25:26,477 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-08-05 10:25:26,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:25:26,490 INFO L225 Difference]: With dead ends: 5 [2019-08-05 10:25:26,490 INFO L226 Difference]: Without dead ends: 5 [2019-08-05 10:25:26,493 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:25:26,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2019-08-05 10:25:26,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-08-05 10:25:26,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-08-05 10:25:26,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2019-08-05 10:25:26,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2019-08-05 10:25:26,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:25:26,538 INFO L475 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2019-08-05 10:25:26,539 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 10:25:26,539 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2019-08-05 10:25:26,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 10:25:26,539 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:25:26,540 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 10:25:26,540 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:25:26,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:25:26,541 INFO L82 PathProgramCache]: Analyzing trace with hash 930412, now seen corresponding path program 1 times [2019-08-05 10:25:26,542 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:25:26,557 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-08-05 10:25:26,557 INFO L285 seRefinementStrategy]: Strategy FixedRefinementStrategy was unsuccessful and could not determine trace feasibility. [2019-08-05 10:25:26,557 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-08-05 10:25:26,580 WARN L226 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2019-08-05 10:25:26,580 INFO L202 PluginConnector]: Adding new model gcd_2.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 10:25:26 BoogieIcfgContainer [2019-08-05 10:25:26,581 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 10:25:26,584 INFO L168 Benchmark]: Toolchain (without parser) took 891.24 ms. Allocated memory is still 140.5 MB. Free memory was 108.8 MB in the beginning and 74.8 MB in the end (delta: 34.0 MB). Peak memory consumption was 34.0 MB. Max. memory is 7.1 GB. [2019-08-05 10:25:26,586 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 110.3 MB in the beginning and 110.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-08-05 10:25:26,587 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.37 ms. Allocated memory is still 140.5 MB. Free memory was 108.8 MB in the beginning and 107.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-08-05 10:25:26,589 INFO L168 Benchmark]: Boogie Preprocessor took 21.47 ms. Allocated memory is still 140.5 MB. Free memory was 107.1 MB in the beginning and 105.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-08-05 10:25:26,590 INFO L168 Benchmark]: RCFGBuilder took 360.87 ms. Allocated memory is still 140.5 MB. Free memory was 105.9 MB in the beginning and 95.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2019-08-05 10:25:26,592 INFO L168 Benchmark]: TraceAbstraction took 469.88 ms. Allocated memory is still 140.5 MB. Free memory was 95.4 MB in the beginning and 74.8 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2019-08-05 10:25:26,598 INFO L335 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 140.5 MB. Free memory was 110.3 MB in the beginning and 110.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 33.37 ms. Allocated memory is still 140.5 MB. Free memory was 108.8 MB in the beginning and 107.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.47 ms. Allocated memory is still 140.5 MB. Free memory was 107.1 MB in the beginning and 105.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 360.87 ms. Allocated memory is still 140.5 MB. Free memory was 105.9 MB in the beginning and 95.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 469.88 ms. Allocated memory is still 140.5 MB. Free memory was 95.4 MB in the beginning and 74.8 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 64]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] havoc main_#res; [L20] havoc main_#t~nondet0, main_#t~nondet1, main_#t~ret2, main_~x~7, main_~y~7, main_~g~7; [L21] assume -128 <= main_#t~nondet0 && main_#t~nondet0 <= 127; [L22] main_~x~7 := main_#t~nondet0; [L23] havoc main_#t~nondet0; [L24] assume -128 <= main_#t~nondet1 && main_#t~nondet1 <= 127; [L25] main_~y~7 := main_#t~nondet1; [L26] havoc main_#t~nondet1; [L27] havoc main_~g~7; [L28] gcd_test_#in~a, gcd_test_#in~b := main_~x~7, main_~y~7; [L29] havoc gcd_test_#res; [L30] havoc gcd_test_~a, gcd_test_~b, gcd_test_~t~5; [L31] gcd_test_~a := gcd_test_#in~a; [L32] gcd_test_~b := gcd_test_#in~b; [L33] havoc gcd_test_~t~5; [L34] assume gcd_test_~a < 0; [L35] gcd_test_~a := (if -gcd_test_~a % 256 <= 127 then -gcd_test_~a % 256 else -gcd_test_~a % 256 - 256); [L36] assume !(gcd_test_~b < 0); [L58] assume !!(gcd_test_~b != 0); [L59] gcd_test_~t~5 := gcd_test_~b; [L60] gcd_test_~b := (if (if gcd_test_~a < 0 && gcd_test_~a % gcd_test_~b != 0 then (if gcd_test_~b < 0 then gcd_test_~a % gcd_test_~b + gcd_test_~b else gcd_test_~a % gcd_test_~b - gcd_test_~b) else gcd_test_~a % gcd_test_~b) % 256 <= 127 then (if gcd_test_~a < 0 && gcd_test_~a % gcd_test_~b != 0 then (if gcd_test_~b < 0 then gcd_test_~a % gcd_test_~b + gcd_test_~b else gcd_test_~a % gcd_test_~b - gcd_test_~b) else gcd_test_~a % gcd_test_~b) % 256 else (if gcd_test_~a < 0 && gcd_test_~a % gcd_test_~b != 0 then (if gcd_test_~b < 0 then gcd_test_~a % gcd_test_~b + gcd_test_~b else gcd_test_~a % gcd_test_~b - gcd_test_~b) else gcd_test_~a % gcd_test_~b) % 256 - 256); [L61] gcd_test_~a := gcd_test_~t~5; [L44] assume !(gcd_test_~b != 0); [L45] gcd_test_#res := gcd_test_~a; [L46] main_#t~ret2 := gcd_test_#res; [L47] assume -128 <= main_#t~ret2 && main_#t~ret2 <= 127; [L48] main_~g~7 := main_#t~ret2; [L49] havoc main_#t~ret2; [L50] assume main_~y~7 > 0; [L51] __VERIFIER_assert_#in~cond := (if main_~y~7 >= main_~g~7 then 1 else 0); [L52] havoc __VERIFIER_assert_~cond; [L53] __VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; [L54] assume __VERIFIER_assert_~cond == 0; [L55] assume !false; [L64] assert false; - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 5 locations, 1 error locations. UNKNOWN Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3 SDtfs, 0 SDslu, 1 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5occurred in iteration=0, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 3 NumberOfNonLiveVariables, 36 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...