java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC_wBE.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/llreve/loop5_merged_unsafe.c-1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 17:51:35,547 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 17:51:35,549 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 17:51:35,560 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 17:51:35,560 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 17:51:35,561 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 17:51:35,562 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 17:51:35,569 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 17:51:35,571 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 17:51:35,572 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 17:51:35,573 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 17:51:35,573 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 17:51:35,574 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 17:51:35,587 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 17:51:35,588 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 17:51:35,589 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 17:51:35,589 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 17:51:35,591 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 17:51:35,593 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 17:51:35,594 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 17:51:35,595 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 17:51:35,600 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 17:51:35,602 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 17:51:35,602 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 17:51:35,603 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 17:51:35,603 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 17:51:35,608 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 17:51:35,608 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 17:51:35,609 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 17:51:35,610 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 17:51:35,610 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 17:51:35,611 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 17:51:35,615 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 17:51:35,615 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 17:51:35,616 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 17:51:35,616 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 17:51:35,617 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 17:51:35,641 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 17:51:35,641 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 17:51:35,641 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 17:51:35,641 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 17:51:35,642 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 17:51:35,643 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 17:51:35,643 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 17:51:35,643 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 17:51:35,643 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 17:51:35,643 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 17:51:35,644 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 17:51:35,646 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 17:51:35,646 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 17:51:35,646 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 17:51:35,647 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 17:51:35,647 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 17:51:35,647 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 17:51:35,647 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 17:51:35,647 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 17:51:35,648 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 17:51:35,648 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 17:51:35,649 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 17:51:35,650 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 17:51:35,701 INFO ]: Repository-Root is: /tmp [2018-06-26 17:51:35,714 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 17:51:35,720 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 17:51:35,721 INFO ]: Initializing SmtParser... [2018-06-26 17:51:35,721 INFO ]: SmtParser initialized [2018-06-26 17:51:35,722 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/llreve/loop5_merged_unsafe.c-1.smt2 [2018-06-26 17:51:35,723 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 [2018-06-26 17:51:35,814 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/loop5_merged_unsafe.c-1.smt2 unknown [2018-06-26 17:51:35,978 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/loop5_merged_unsafe.c-1.smt2 [2018-06-26 17:51:35,982 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 17:51:35,992 INFO ]: Walking toolchain with 5 elements. [2018-06-26 17:51:35,992 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 17:51:35,992 INFO ]: Initializing ChcToBoogie... [2018-06-26 17:51:35,992 INFO ]: ChcToBoogie initialized [2018-06-26 17:51:35,998 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:51:35" (1/1) ... [2018-06-26 17:51:36,050 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:51:36 Unit [2018-06-26 17:51:36,050 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 17:51:36,051 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 17:51:36,051 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 17:51:36,051 INFO ]: Boogie Preprocessor initialized [2018-06-26 17:51:36,072 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:51:36" (1/1) ... [2018-06-26 17:51:36,072 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:51:36" (1/1) ... [2018-06-26 17:51:36,077 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:51:36" (1/1) ... [2018-06-26 17:51:36,077 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:51:36" (1/1) ... [2018-06-26 17:51:36,080 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:51:36" (1/1) ... [2018-06-26 17:51:36,082 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:51:36" (1/1) ... [2018-06-26 17:51:36,083 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:51:36" (1/1) ... [2018-06-26 17:51:36,084 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 17:51:36,084 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 17:51:36,084 INFO ]: Initializing RCFGBuilder... [2018-06-26 17:51:36,084 INFO ]: RCFGBuilder initialized [2018-06-26 17:51:36,086 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:51:36" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 17:51:36,096 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 17:51:36,096 INFO ]: Found specification of procedure gotoProc [2018-06-26 17:51:36,096 INFO ]: Found implementation of procedure gotoProc [2018-06-26 17:51:36,096 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 17:51:36,096 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 17:51:36,096 INFO ]: Found implementation of procedure Ultimate.START [2018-06-26 17:51:36,272 INFO ]: Using library mode [2018-06-26 17:51:36,272 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:51:36 BoogieIcfgContainer [2018-06-26 17:51:36,272 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 17:51:36,273 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 17:51:36,273 INFO ]: Initializing BlockEncodingV2... [2018-06-26 17:51:36,274 INFO ]: BlockEncodingV2 initialized [2018-06-26 17:51:36,274 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:51:36" (1/1) ... [2018-06-26 17:51:36,286 INFO ]: Initial Icfg 12 locations, 13 edges [2018-06-26 17:51:36,288 INFO ]: Using Remove infeasible edges [2018-06-26 17:51:36,288 INFO ]: Using Maximize final states [2018-06-26 17:51:36,288 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 17:51:36,289 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 17:51:36,290 INFO ]: Using Remove sink states [2018-06-26 17:51:36,291 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 17:51:36,291 INFO ]: Using Use SBE [2018-06-26 17:51:36,297 INFO ]: SBE split 0 edges [2018-06-26 17:51:36,303 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-26 17:51:36,307 INFO ]: 0 new accepting states [2018-06-26 17:51:36,336 INFO ]: Removed 6 edges and 3 locations by large block encoding [2018-06-26 17:51:36,338 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:51:36,342 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 17:51:36,342 INFO ]: 0 new accepting states [2018-06-26 17:51:36,342 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 17:51:36,342 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:51:36,342 INFO ]: Encoded RCFG 7 locations, 8 edges [2018-06-26 17:51:36,351 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:51:36 BasicIcfg [2018-06-26 17:51:36,351 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 17:51:36,352 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 17:51:36,352 INFO ]: Initializing TraceAbstraction... [2018-06-26 17:51:36,355 INFO ]: TraceAbstraction initialized [2018-06-26 17:51:36,355 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:51:35" (1/4) ... [2018-06-26 17:51:36,364 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69575c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 05:51:36, skipping insertion in model container [2018-06-26 17:51:36,364 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:51:36" (2/4) ... [2018-06-26 17:51:36,364 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69575c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 05:51:36, skipping insertion in model container [2018-06-26 17:51:36,364 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:51:36" (3/4) ... [2018-06-26 17:51:36,364 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69575c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:51:36, skipping insertion in model container [2018-06-26 17:51:36,364 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:51:36" (4/4) ... [2018-06-26 17:51:36,366 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 17:51:36,384 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 17:51:36,395 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 17:51:36,472 INFO ]: Using default assertion order modulation [2018-06-26 17:51:36,472 INFO ]: Interprodecural is true [2018-06-26 17:51:36,472 INFO ]: Hoare is false [2018-06-26 17:51:36,472 INFO ]: Compute interpolants for FPandBP [2018-06-26 17:51:36,472 INFO ]: Backedges is TWOTRACK [2018-06-26 17:51:36,472 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 17:51:36,472 INFO ]: Difference is false [2018-06-26 17:51:36,472 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 17:51:36,472 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 17:51:36,483 INFO ]: Start isEmpty. Operand 7 states. [2018-06-26 17:51:36,492 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 17:51:36,492 INFO ]: Found error trace [2018-06-26 17:51:36,493 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 17:51:36,493 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:51:36,498 INFO ]: Analyzing trace with hash 1158110127, now seen corresponding path program 1 times [2018-06-26 17:51:36,500 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:51:36,500 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:51:36,532 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:51:36,533 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:51:36,533 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:51:36,575 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:51:36,641 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:51:36,643 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:51:36,643 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-26 17:51:36,644 INFO ]: Interpolant automaton has 4 states [2018-06-26 17:51:36,655 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-26 17:51:36,655 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-26 17:51:36,658 INFO ]: Start difference. First operand 7 states. Second operand 4 states. [2018-06-26 17:51:36,804 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:51:36,804 INFO ]: Finished difference Result 11 states and 14 transitions. [2018-06-26 17:51:36,804 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-26 17:51:36,805 INFO ]: Start accepts. Automaton has 4 states. Word has length 6 [2018-06-26 17:51:36,805 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:51:36,813 INFO ]: With dead ends: 11 [2018-06-26 17:51:36,813 INFO ]: Without dead ends: 11 [2018-06-26 17:51:36,815 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-26 17:51:36,829 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-26 17:51:36,857 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 9. [2018-06-26 17:51:36,858 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-26 17:51:36,859 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2018-06-26 17:51:36,860 INFO ]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 6 [2018-06-26 17:51:36,860 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:51:36,860 INFO ]: Abstraction has 9 states and 11 transitions. [2018-06-26 17:51:36,860 INFO ]: Interpolant automaton has 4 states. [2018-06-26 17:51:36,860 INFO ]: Start isEmpty. Operand 9 states and 11 transitions. [2018-06-26 17:51:36,860 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-26 17:51:36,860 INFO ]: Found error trace [2018-06-26 17:51:36,860 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:51:36,860 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:51:36,861 INFO ]: Analyzing trace with hash 1541291361, now seen corresponding path program 1 times [2018-06-26 17:51:36,861 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:51:36,864 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:51:36,865 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:51:36,865 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:51:36,865 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:51:36,888 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:51:37,193 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:51:37,193 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 17:51:37,193 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 [2018-06-26 17:51:37,202 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:51:37,241 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:51:37,249 INFO ]: Computing forward predicates... [2018-06-26 17:51:37,351 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:51:37,371 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 17:51:37,371 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-26 17:51:37,372 INFO ]: Interpolant automaton has 6 states [2018-06-26 17:51:37,372 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-26 17:51:37,372 INFO ]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-06-26 17:51:37,372 INFO ]: Start difference. First operand 9 states and 11 transitions. Second operand 6 states. [2018-06-26 17:51:37,708 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:51:37,709 INFO ]: Finished difference Result 10 states and 12 transitions. [2018-06-26 17:51:37,709 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-26 17:51:37,709 INFO ]: Start accepts. Automaton has 6 states. Word has length 7 [2018-06-26 17:51:37,709 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:51:37,709 INFO ]: With dead ends: 10 [2018-06-26 17:51:37,709 INFO ]: Without dead ends: 8 [2018-06-26 17:51:37,710 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-06-26 17:51:37,710 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-26 17:51:37,711 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-06-26 17:51:37,711 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-26 17:51:37,711 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2018-06-26 17:51:37,712 INFO ]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 7 [2018-06-26 17:51:37,712 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:51:37,712 INFO ]: Abstraction has 8 states and 9 transitions. [2018-06-26 17:51:37,712 INFO ]: Interpolant automaton has 6 states. [2018-06-26 17:51:37,712 INFO ]: Start isEmpty. Operand 8 states and 9 transitions. [2018-06-26 17:51:37,712 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-26 17:51:37,712 INFO ]: Found error trace [2018-06-26 17:51:37,712 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:51:37,712 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:51:37,712 INFO ]: Analyzing trace with hash 1542155300, now seen corresponding path program 1 times [2018-06-26 17:51:37,712 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:51:37,712 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:51:37,713 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:51:37,713 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:51:37,713 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:51:37,727 INFO ]: Conjunction of SSA is sat [2018-06-26 17:51:37,729 INFO ]: Counterexample might be feasible [2018-06-26 17:51:37,750 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 17:51:37,751 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:51:37 BasicIcfg [2018-06-26 17:51:37,751 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 17:51:37,752 INFO ]: Toolchain (without parser) took 1768.97 ms. Allocated memory is still 304.6 MB. Free memory was 261.1 MB in the beginning and 212.1 MB in the end (delta: 48.9 MB). Peak memory consumption was 48.9 MB. Max. memory is 3.6 GB. [2018-06-26 17:51:37,753 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 304.6 MB. Free memory is still 270.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 17:51:37,753 INFO ]: ChcToBoogie took 58.30 ms. Allocated memory is still 304.6 MB. Free memory was 261.1 MB in the beginning and 259.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. [2018-06-26 17:51:37,754 INFO ]: Boogie Preprocessor took 33.28 ms. Allocated memory is still 304.6 MB. Free memory was 259.0 MB in the beginning and 257.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. [2018-06-26 17:51:37,755 INFO ]: RCFGBuilder took 188.08 ms. Allocated memory is still 304.6 MB. Free memory was 257.9 MB in the beginning and 249.8 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 3.6 GB. [2018-06-26 17:51:37,755 INFO ]: BlockEncodingV2 took 78.38 ms. Allocated memory is still 304.6 MB. Free memory was 249.8 MB in the beginning and 246.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:51:37,756 INFO ]: TraceAbstraction took 1398.89 ms. Allocated memory is still 304.6 MB. Free memory was 246.8 MB in the beginning and 212.1 MB in the end (delta: 34.7 MB). Peak memory consumption was 34.7 MB. Max. memory is 3.6 GB. [2018-06-26 17:51:37,760 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 12 locations, 13 edges - StatisticsResult: Encoded RCFG 7 locations, 8 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 304.6 MB. Free memory is still 270.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 58.30 ms. Allocated memory is still 304.6 MB. Free memory was 261.1 MB in the beginning and 259.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 33.28 ms. Allocated memory is still 304.6 MB. Free memory was 259.0 MB in the beginning and 257.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 188.08 ms. Allocated memory is still 304.6 MB. Free memory was 257.9 MB in the beginning and 249.8 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 78.38 ms. Allocated memory is still 304.6 MB. Free memory was 249.8 MB in the beginning and 246.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1398.89 ms. Allocated memory is still 304.6 MB. Free memory was 246.8 MB in the beginning and 212.1 MB in the end (delta: 34.7 MB). Peak memory consumption was 34.7 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [UNKNOWN] : assertion can be violated assertion can be violated We found a FailurePath: [L0] CALL call gotoProc(0, 0, 0, 0, 0, 0); [L0] assume !(0 <= hhv_inv_main11_3_Int + -1); [L0] hhv_inv_main10_0_Int, hhv_inv_main10_1_Int, hhv_inv_main10_2_Int, hhv_inv_main10_3_Int, hhv_inv_main10_4_Int := hhv_inv_main11_0_Int, hhv_inv_main11_1_Int, hhv_inv_main11_2_Int, hhv_inv_main11_3_Int, hhv_inv_main11_4_Int; [L0] assume (hhv_inv_main10_3_Int == hbv_inv_main10_1_Int + -1 && hhv_inv_main10_4_Int == hbv_inv_main10_2_Int + 2) && 0 <= hbv_inv_main10_1_Int + -1; [L0] hhv_inv_main10_0_Int, hhv_inv_main10_1_Int, hhv_inv_main10_2_Int, hhv_inv_main10_3_Int, hhv_inv_main10_4_Int := hhv_inv_main10_0_Int, hhv_inv_main10_1_Int, hhv_inv_main10_2_Int, hbv_inv_main10_1_Int, hbv_inv_main10_2_Int; [L0] havoc hbv_inv_main10_2_Int, hbv_inv_main10_1_Int; [L0] assume (hhv_inv_main10_4_Int == 0 && hhv_inv_main10_3_Int == hhv_inv_main10_0_Int + 1) && !(0 <= hhv_inv_main10_0_Int + hhv_inv_main10_0_Int + -1 * hhv_inv_main10_1_Int + -1); [L0] hhv_inv_main5_0_Int, hhv_inv_main5_1_Int, hhv_inv_main5_2_Int := hhv_inv_main10_0_Int, hhv_inv_main10_1_Int, hhv_inv_main10_2_Int; [L0] RET call gotoProc(0, 0, 0, 0, 0, 0); [L0] assert false; - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 7 locations, 1 error locations. UNSAFE Result, 1.2s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10 SDtfs, 5 SDslu, 23 SDs, 0 SdLazy, 22 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=1, 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 301 SizeOfPredicates, 4 NumberOfNonLiveVariables, 68 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop5_merged_unsafe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_17-51-37-772.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop5_merged_unsafe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_17-51-37-772.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop5_merged_unsafe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_17-51-37-772.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop5_merged_unsafe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_17-51-37-772.csv Received shutdown request...