java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/Consistency/graham-scan-full.31.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 00:43:39,667 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 00:43:39,669 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 00:43:39,684 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 00:43:39,684 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 00:43:39,685 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 00:43:39,686 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 00:43:39,690 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 00:43:39,691 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 00:43:39,693 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 00:43:39,694 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 00:43:39,694 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 00:43:39,695 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 00:43:39,695 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 00:43:39,699 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 00:43:39,699 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 00:43:39,701 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 00:43:39,710 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 00:43:39,711 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 00:43:39,712 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 00:43:39,713 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 00:43:39,718 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 00:43:39,718 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 00:43:39,718 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 00:43:39,719 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 00:43:39,719 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 00:43:39,723 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 00:43:39,724 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 00:43:39,725 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 00:43:39,725 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 00:43:39,725 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 00:43:39,730 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 00:43:39,730 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 00:43:39,731 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 00:43:39,732 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 00:43:39,732 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 00:43:39,746 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 00:43:39,746 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 00:43:39,747 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 00:43:39,747 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 00:43:39,748 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 00:43:39,748 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 00:43:39,748 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 00:43:39,748 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 00:43:39,749 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 00:43:39,750 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 00:43:39,750 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 00:43:39,750 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 00:43:39,751 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 00:43:39,751 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 00:43:39,751 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 00:43:39,751 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 00:43:39,751 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 00:43:39,753 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 00:43:39,753 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 00:43:39,794 INFO ]: Repository-Root is: /tmp [2018-06-22 00:43:39,809 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 00:43:39,812 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 00:43:39,813 INFO ]: Initializing SmtParser... [2018-06-22 00:43:39,813 INFO ]: SmtParser initialized [2018-06-22 00:43:39,814 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/Consistency/graham-scan-full.31.smt2 [2018-06-22 00:43:39,815 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/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 [2018-06-22 00:43:39,904 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/graham-scan-full.31.smt2 unknown [2018-06-22 00:43:40,468 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/graham-scan-full.31.smt2 [2018-06-22 00:43:40,473 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 00:43:40,487 INFO ]: Walking toolchain with 4 elements. [2018-06-22 00:43:40,488 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 00:43:40,488 INFO ]: Initializing ChcToBoogie... [2018-06-22 00:43:40,488 INFO ]: ChcToBoogie initialized [2018-06-22 00:43:40,491 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:43:40" (1/1) ... [2018-06-22 00:43:40,605 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:43:40 Unit [2018-06-22 00:43:40,605 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 00:43:40,606 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 00:43:40,606 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 00:43:40,606 INFO ]: Boogie Preprocessor initialized [2018-06-22 00:43:40,626 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:43:40" (1/1) ... [2018-06-22 00:43:40,626 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:43:40" (1/1) ... [2018-06-22 00:43:40,648 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:43:40" (1/1) ... [2018-06-22 00:43:40,648 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:43:40" (1/1) ... [2018-06-22 00:43:40,674 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:43:40" (1/1) ... [2018-06-22 00:43:40,677 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:43:40" (1/1) ... [2018-06-22 00:43:40,690 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:43:40" (1/1) ... [2018-06-22 00:43:40,694 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 00:43:40,694 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 00:43:40,695 INFO ]: Initializing RCFGBuilder... [2018-06-22 00:43:40,695 INFO ]: RCFGBuilder initialized [2018-06-22 00:43:40,695 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:43:40" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 00:43:40,718 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 00:43:40,718 INFO ]: Found specification of procedure gotoProc [2018-06-22 00:43:40,718 INFO ]: Found implementation of procedure gotoProc [2018-06-22 00:43:40,718 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 00:43:40,718 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 00:43:40,718 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 00:43:42,244 INFO ]: Using library mode [2018-06-22 00:43:42,245 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:43:42 BoogieIcfgContainer [2018-06-22 00:43:42,245 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 00:43:42,246 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 00:43:42,246 INFO ]: Initializing TraceAbstraction... [2018-06-22 00:43:42,249 INFO ]: TraceAbstraction initialized [2018-06-22 00:43:42,249 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:43:40" (1/3) ... [2018-06-22 00:43:42,250 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e6e4cfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 12:43:42, skipping insertion in model container [2018-06-22 00:43:42,250 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:43:40" (2/3) ... [2018-06-22 00:43:42,250 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e6e4cfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 12:43:42, skipping insertion in model container [2018-06-22 00:43:42,250 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:43:42" (3/3) ... [2018-06-22 00:43:42,252 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 00:43:42,261 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 00:43:42,269 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 00:43:42,307 INFO ]: Using default assertion order modulation [2018-06-22 00:43:42,307 INFO ]: Interprodecural is true [2018-06-22 00:43:42,308 INFO ]: Hoare is false [2018-06-22 00:43:42,308 INFO ]: Compute interpolants for FPandBP [2018-06-22 00:43:42,308 INFO ]: Backedges is TWOTRACK [2018-06-22 00:43:42,308 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 00:43:42,308 INFO ]: Difference is false [2018-06-22 00:43:42,308 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 00:43:42,308 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 00:43:42,326 INFO ]: Start isEmpty. Operand 145 states. [2018-06-22 00:43:42,349 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 00:43:42,349 INFO ]: Found error trace [2018-06-22 00:43:42,350 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:43:42,350 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:43:42,355 INFO ]: Analyzing trace with hash 433384730, now seen corresponding path program 1 times [2018-06-22 00:43:42,357 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:43:42,358 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:43:42,390 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:43:42,390 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:43:42,390 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:43:42,440 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:43:42,612 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:43:42,614 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:43:42,614 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 00:43:42,616 INFO ]: Interpolant automaton has 4 states [2018-06-22 00:43:42,631 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 00:43:42,632 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 00:43:42,634 INFO ]: Start difference. First operand 145 states. Second operand 4 states. [2018-06-22 00:43:45,337 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:43:45,338 INFO ]: Finished difference Result 283 states and 549 transitions. [2018-06-22 00:43:45,339 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 00:43:45,340 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 00:43:45,341 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:43:45,395 INFO ]: With dead ends: 283 [2018-06-22 00:43:45,396 INFO ]: Without dead ends: 269 [2018-06-22 00:43:45,397 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 00:43:45,426 INFO ]: Start minimizeSevpa. Operand 269 states. [2018-06-22 00:43:45,554 INFO ]: Finished minimizeSevpa. Reduced states from 269 to 269. [2018-06-22 00:43:45,555 INFO ]: Start removeUnreachable. Operand 269 states. [2018-06-22 00:43:45,579 INFO ]: Finished removeUnreachable. Reduced from 269 states to 269 states and 525 transitions. [2018-06-22 00:43:45,581 INFO ]: Start accepts. Automaton has 269 states and 525 transitions. Word has length 8 [2018-06-22 00:43:45,582 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:43:45,582 INFO ]: Abstraction has 269 states and 525 transitions. [2018-06-22 00:43:45,582 INFO ]: Interpolant automaton has 4 states. [2018-06-22 00:43:45,582 INFO ]: Start isEmpty. Operand 269 states and 525 transitions. [2018-06-22 00:43:45,585 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 00:43:45,585 INFO ]: Found error trace [2018-06-22 00:43:45,585 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:43:45,585 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:43:45,586 INFO ]: Analyzing trace with hash 303168269, now seen corresponding path program 1 times [2018-06-22 00:43:45,586 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:43:45,586 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:43:45,587 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:43:45,587 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:43:45,587 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:43:45,593 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:43:45,773 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:43:45,773 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:43:45,773 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 00:43:45,774 INFO ]: Interpolant automaton has 4 states [2018-06-22 00:43:45,775 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 00:43:45,775 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 00:43:45,775 INFO ]: Start difference. First operand 269 states and 525 transitions. Second operand 4 states. [2018-06-22 00:43:47,847 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:43:47,847 INFO ]: Finished difference Result 402 states and 786 transitions. [2018-06-22 00:43:47,875 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 00:43:47,875 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 00:43:47,876 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:43:47,895 INFO ]: With dead ends: 402 [2018-06-22 00:43:47,895 INFO ]: Without dead ends: 402 [2018-06-22 00:43:47,896 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 00:43:47,896 INFO ]: Start minimizeSevpa. Operand 402 states. [2018-06-22 00:43:47,999 INFO ]: Finished minimizeSevpa. Reduced states from 402 to 402. [2018-06-22 00:43:47,999 INFO ]: Start removeUnreachable. Operand 402 states. [2018-06-22 00:43:48,021 INFO ]: Finished removeUnreachable. Reduced from 402 states to 402 states and 786 transitions. [2018-06-22 00:43:48,022 INFO ]: Start accepts. Automaton has 402 states and 786 transitions. Word has length 8 [2018-06-22 00:43:48,022 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:43:48,022 INFO ]: Abstraction has 402 states and 786 transitions. [2018-06-22 00:43:48,022 INFO ]: Interpolant automaton has 4 states. [2018-06-22 00:43:48,022 INFO ]: Start isEmpty. Operand 402 states and 786 transitions. [2018-06-22 00:43:48,056 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 00:43:48,056 INFO ]: Found error trace [2018-06-22 00:43:48,056 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:43:48,056 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:43:48,056 INFO ]: Analyzing trace with hash 1633376959, now seen corresponding path program 1 times [2018-06-22 00:43:48,056 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:43:48,056 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:43:48,057 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:43:48,057 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:43:48,057 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:43:48,133 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:43:48,670 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 00:43:48,670 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 00:43:48,670 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 00:43:48,685 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:43:48,754 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:43:48,770 INFO ]: Computing forward predicates... [2018-06-22 00:43:49,190 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 00:43:49,214 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 00:43:49,214 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-06-22 00:43:49,214 INFO ]: Interpolant automaton has 12 states [2018-06-22 00:43:49,215 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 00:43:49,215 INFO ]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-06-22 00:43:49,215 INFO ]: Start difference. First operand 402 states and 786 transitions. Second operand 12 states. [2018-06-22 00:44:00,995 WARN ]: Spent 142.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18 Received shutdown request... [2018-06-22 00:44:45,351 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-06-22 00:44:45,351 WARN ]: Verification canceled [2018-06-22 00:44:45,355 WARN ]: Timeout [2018-06-22 00:44:45,355 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 12:44:45 BoogieIcfgContainer [2018-06-22 00:44:45,355 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 00:44:45,356 INFO ]: Toolchain (without parser) took 64882.96 ms. Allocated memory was 309.3 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 248.7 MB in the beginning and 218.2 MB in the end (delta: 30.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. [2018-06-22 00:44:45,357 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 00:44:45,357 INFO ]: ChcToBoogie took 117.97 ms. Allocated memory is still 309.3 MB. Free memory was 248.7 MB in the beginning and 243.7 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. [2018-06-22 00:44:45,358 INFO ]: Boogie Preprocessor took 88.12 ms. Allocated memory is still 309.3 MB. Free memory was 243.7 MB in the beginning and 241.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 00:44:45,358 INFO ]: RCFGBuilder took 1550.69 ms. Allocated memory was 309.3 MB in the beginning and 324.0 MB in the end (delta: 14.7 MB). Free memory was 241.7 MB in the beginning and 275.2 MB in the end (delta: -33.5 MB). Peak memory consumption was 59.5 MB. Max. memory is 3.6 GB. [2018-06-22 00:44:45,359 INFO ]: TraceAbstraction took 63109.28 ms. Allocated memory was 324.0 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 275.2 MB in the beginning and 218.2 MB in the end (delta: 57.0 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. [2018-06-22 00:44:45,362 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 117.97 ms. Allocated memory is still 309.3 MB. Free memory was 248.7 MB in the beginning and 243.7 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 88.12 ms. Allocated memory is still 309.3 MB. Free memory was 243.7 MB in the beginning and 241.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 1550.69 ms. Allocated memory was 309.3 MB in the beginning and 324.0 MB in the end (delta: 14.7 MB). Free memory was 241.7 MB in the beginning and 275.2 MB in the end (delta: -33.5 MB). Peak memory consumption was 59.5 MB. Max. memory is 3.6 GB. * TraceAbstraction took 63109.28 ms. Allocated memory was 324.0 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 275.2 MB in the beginning and 218.2 MB in the end (delta: 57.0 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was constructing difference of abstraction (402states) and interpolant automaton (currently 65 states, 12 states before enhancement), while ReachableStatesComputation was computing reachable states (3884 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 145 locations, 1 error locations. TIMEOUT Result, 63.0s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 61.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1918 SDtfs, 1327 SDslu, 4688 SDs, 0 SdLazy, 45214 SolverSat, 18092 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 50.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1664 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=402occurred 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: 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 1518 SizeOfPredicates, 6 NumberOfNonLiveVariables, 440 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 8/10 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/graham-scan-full.31.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_00-44-45-372.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/graham-scan-full.31.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_00-44-45-372.csv Completed graceful shutdown