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/while-if_safe.c-1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 20:55:10,559 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 20:55:10,562 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 20:55:10,574 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 20:55:10,574 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 20:55:10,575 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 20:55:10,576 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 20:55:10,578 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 20:55:10,580 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 20:55:10,580 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 20:55:10,581 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 20:55:10,581 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 20:55:10,582 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 20:55:10,585 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 20:55:10,586 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 20:55:10,587 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 20:55:10,594 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 20:55:10,596 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 20:55:10,598 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 20:55:10,599 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 20:55:10,600 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 20:55:10,602 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 20:55:10,602 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 20:55:10,602 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 20:55:10,603 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 20:55:10,604 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 20:55:10,605 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 20:55:10,605 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 20:55:10,606 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 20:55:10,606 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 20:55:10,607 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 20:55:10,607 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 20:55:10,608 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 20:55:10,608 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 20:55:10,609 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 20:55:10,609 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 20:55:10,634 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 20:55:10,634 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 20:55:10,634 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 20:55:10,635 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 20:55:10,635 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 20:55:10,636 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 20:55:10,636 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 20:55:10,636 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 20:55:10,636 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 20:55:10,637 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 20:55:10,637 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 20:55:10,637 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 20:55:10,637 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 20:55:10,637 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 20:55:10,637 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 20:55:10,639 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 20:55:10,639 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 20:55:10,639 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 20:55:10,640 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 20:55:10,640 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 20:55:10,640 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 20:55:10,641 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 20:55:10,641 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 20:55:10,694 INFO ]: Repository-Root is: /tmp [2018-06-24 20:55:10,708 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 20:55:10,713 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 20:55:10,715 INFO ]: Initializing SmtParser... [2018-06-24 20:55:10,715 INFO ]: SmtParser initialized [2018-06-24 20:55:10,716 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/llreve/while-if_safe.c-1.smt2 [2018-06-24 20:55:10,717 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 [2018-06-24 20:55:10,802 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/while-if_safe.c-1.smt2 unknown [2018-06-24 20:55:10,997 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/while-if_safe.c-1.smt2 [2018-06-24 20:55:11,001 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 20:55:11,010 INFO ]: Walking toolchain with 5 elements. [2018-06-24 20:55:11,011 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 20:55:11,012 INFO ]: Initializing ChcToBoogie... [2018-06-24 20:55:11,012 INFO ]: ChcToBoogie initialized [2018-06-24 20:55:11,015 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:55:10" (1/1) ... [2018-06-24 20:55:11,077 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:55:11 Unit [2018-06-24 20:55:11,077 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 20:55:11,078 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 20:55:11,078 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 20:55:11,078 INFO ]: Boogie Preprocessor initialized [2018-06-24 20:55:11,099 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:55:11" (1/1) ... [2018-06-24 20:55:11,099 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:55:11" (1/1) ... [2018-06-24 20:55:11,104 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:55:11" (1/1) ... [2018-06-24 20:55:11,104 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:55:11" (1/1) ... [2018-06-24 20:55:11,109 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:55:11" (1/1) ... [2018-06-24 20:55:11,111 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:55:11" (1/1) ... [2018-06-24 20:55:11,112 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:55:11" (1/1) ... [2018-06-24 20:55:11,113 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 20:55:11,114 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 20:55:11,114 INFO ]: Initializing RCFGBuilder... [2018-06-24 20:55:11,114 INFO ]: RCFGBuilder initialized [2018-06-24 20:55:11,115 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:55:11" (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) [2018-06-24 20:55:11,131 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 20:55:11,131 INFO ]: Found specification of procedure gotoProc [2018-06-24 20:55:11,131 INFO ]: Found implementation of procedure gotoProc [2018-06-24 20:55:11,131 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 20:55:11,131 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 20:55:11,131 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 [2018-06-24 20:55:11,487 INFO ]: Using library mode [2018-06-24 20:55:11,487 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:55:11 BoogieIcfgContainer [2018-06-24 20:55:11,487 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 20:55:11,488 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 20:55:11,488 INFO ]: Initializing BlockEncodingV2... [2018-06-24 20:55:11,489 INFO ]: BlockEncodingV2 initialized [2018-06-24 20:55:11,489 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:55:11" (1/1) ... [2018-06-24 20:55:11,503 INFO ]: Initial Icfg 13 locations, 17 edges [2018-06-24 20:55:11,505 INFO ]: Using Remove infeasible edges [2018-06-24 20:55:11,505 INFO ]: Using Maximize final states [2018-06-24 20:55:11,506 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 20:55:11,506 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 20:55:11,507 INFO ]: Using Remove sink states [2018-06-24 20:55:11,508 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 20:55:11,508 INFO ]: Using Use SBE [2018-06-24 20:55:11,524 INFO ]: SBE split 2 edges [2018-06-24 20:55:11,528 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-24 20:55:11,530 INFO ]: 0 new accepting states [2018-06-24 20:55:11,663 INFO ]: Removed 12 edges and 4 locations by large block encoding [2018-06-24 20:55:11,666 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 20:55:11,668 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 20:55:11,668 INFO ]: 0 new accepting states [2018-06-24 20:55:11,668 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 20:55:11,668 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 20:55:11,669 INFO ]: Encoded RCFG 7 locations, 13 edges [2018-06-24 20:55:11,669 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:55:11 BasicIcfg [2018-06-24 20:55:11,669 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 20:55:11,672 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 20:55:11,672 INFO ]: Initializing TraceAbstraction... [2018-06-24 20:55:11,675 INFO ]: TraceAbstraction initialized [2018-06-24 20:55:11,676 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:55:10" (1/4) ... [2018-06-24 20:55:11,676 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7363b41c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 08:55:11, skipping insertion in model container [2018-06-24 20:55:11,677 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:55:11" (2/4) ... [2018-06-24 20:55:11,677 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7363b41c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 08:55:11, skipping insertion in model container [2018-06-24 20:55:11,677 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:55:11" (3/4) ... [2018-06-24 20:55:11,677 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7363b41c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:55:11, skipping insertion in model container [2018-06-24 20:55:11,677 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:55:11" (4/4) ... [2018-06-24 20:55:11,679 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 20:55:11,688 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 20:55:11,694 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 20:55:11,728 INFO ]: Using default assertion order modulation [2018-06-24 20:55:11,729 INFO ]: Interprodecural is true [2018-06-24 20:55:11,729 INFO ]: Hoare is false [2018-06-24 20:55:11,729 INFO ]: Compute interpolants for FPandBP [2018-06-24 20:55:11,729 INFO ]: Backedges is TWOTRACK [2018-06-24 20:55:11,729 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 20:55:11,729 INFO ]: Difference is false [2018-06-24 20:55:11,729 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 20:55:11,729 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 20:55:11,745 INFO ]: Start isEmpty. Operand 7 states. [2018-06-24 20:55:11,757 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 20:55:11,757 INFO ]: Found error trace [2018-06-24 20:55:11,758 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 20:55:11,758 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:55:11,762 INFO ]: Analyzing trace with hash 33929575, now seen corresponding path program 1 times [2018-06-24 20:55:11,763 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:55:11,764 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:55:11,794 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:55:11,794 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:55:11,794 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:55:11,841 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:55:11,905 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:55:11,907 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:55:11,907 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 20:55:11,908 INFO ]: Interpolant automaton has 3 states [2018-06-24 20:55:11,919 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 20:55:11,919 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:55:11,922 INFO ]: Start difference. First operand 7 states. Second operand 3 states. [2018-06-24 20:55:12,038 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:55:12,039 INFO ]: Finished difference Result 10 states and 20 transitions. [2018-06-24 20:55:12,039 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 20:55:12,040 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 20:55:12,040 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:55:12,049 INFO ]: With dead ends: 10 [2018-06-24 20:55:12,049 INFO ]: Without dead ends: 10 [2018-06-24 20:55:12,051 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:55:12,082 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-24 20:55:12,108 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 8. [2018-06-24 20:55:12,109 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-24 20:55:12,109 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2018-06-24 20:55:12,111 INFO ]: Start accepts. Automaton has 8 states and 17 transitions. Word has length 5 [2018-06-24 20:55:12,113 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:55:12,113 INFO ]: Abstraction has 8 states and 17 transitions. [2018-06-24 20:55:12,113 INFO ]: Interpolant automaton has 3 states. [2018-06-24 20:55:12,113 INFO ]: Start isEmpty. Operand 8 states and 17 transitions. [2018-06-24 20:55:12,113 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 20:55:12,113 INFO ]: Found error trace [2018-06-24 20:55:12,113 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 20:55:12,113 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:55:12,114 INFO ]: Analyzing trace with hash 1051053897, now seen corresponding path program 1 times [2018-06-24 20:55:12,114 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:55:12,114 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:55:12,114 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:55:12,114 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:55:12,114 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:55:12,132 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:55:12,277 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:55:12,277 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:55:12,277 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 20:55:12,279 INFO ]: Interpolant automaton has 3 states [2018-06-24 20:55:12,279 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 20:55:12,279 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:55:12,279 INFO ]: Start difference. First operand 8 states and 17 transitions. Second operand 3 states. [2018-06-24 20:55:12,461 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:55:12,461 INFO ]: Finished difference Result 10 states and 19 transitions. [2018-06-24 20:55:12,463 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 20:55:12,463 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-24 20:55:12,463 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:55:12,463 INFO ]: With dead ends: 10 [2018-06-24 20:55:12,463 INFO ]: Without dead ends: 10 [2018-06-24 20:55:12,464 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:55:12,464 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-24 20:55:12,466 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 7. [2018-06-24 20:55:12,466 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-24 20:55:12,466 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 12 transitions. [2018-06-24 20:55:12,466 INFO ]: Start accepts. Automaton has 7 states and 12 transitions. Word has length 6 [2018-06-24 20:55:12,466 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:55:12,466 INFO ]: Abstraction has 7 states and 12 transitions. [2018-06-24 20:55:12,466 INFO ]: Interpolant automaton has 3 states. [2018-06-24 20:55:12,466 INFO ]: Start isEmpty. Operand 7 states and 12 transitions. [2018-06-24 20:55:12,467 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 20:55:12,467 INFO ]: Found error trace [2018-06-24 20:55:12,467 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 20:55:12,468 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:55:12,468 INFO ]: Analyzing trace with hash 1051559383, now seen corresponding path program 1 times [2018-06-24 20:55:12,468 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:55:12,468 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:55:12,469 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:55:12,469 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:55:12,469 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:55:12,480 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:55:12,517 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:55:12,517 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:55:12,517 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-24 20:55:12,517 INFO ]: Interpolant automaton has 4 states [2018-06-24 20:55:12,517 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-24 20:55:12,517 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-24 20:55:12,517 INFO ]: Start difference. First operand 7 states and 12 transitions. Second operand 4 states. [2018-06-24 20:55:12,759 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:55:12,760 INFO ]: Finished difference Result 11 states and 20 transitions. [2018-06-24 20:55:12,760 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-24 20:55:12,760 INFO ]: Start accepts. Automaton has 4 states. Word has length 6 [2018-06-24 20:55:12,760 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:55:12,760 INFO ]: With dead ends: 11 [2018-06-24 20:55:12,760 INFO ]: Without dead ends: 11 [2018-06-24 20:55:12,761 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 [2018-06-24 20:55:12,761 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-24 20:55:12,762 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 9. [2018-06-24 20:55:12,763 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-24 20:55:12,763 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 17 transitions. [2018-06-24 20:55:12,763 INFO ]: Start accepts. Automaton has 9 states and 17 transitions. Word has length 6 [2018-06-24 20:55:12,763 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:55:12,763 INFO ]: Abstraction has 9 states and 17 transitions. [2018-06-24 20:55:12,763 INFO ]: Interpolant automaton has 4 states. [2018-06-24 20:55:12,763 INFO ]: Start isEmpty. Operand 9 states and 17 transitions. [2018-06-24 20:55:12,763 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-24 20:55:12,763 INFO ]: Found error trace [2018-06-24 20:55:12,763 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:55:12,763 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:55:12,764 INFO ]: Analyzing trace with hash -1777325003, now seen corresponding path program 1 times [2018-06-24 20:55:12,764 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:55:12,764 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:55:12,766 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:55:12,766 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:55:12,766 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:55:12,777 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:55:12,816 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:55:12,816 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:55:12,816 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-24 20:55:12,816 INFO ]: Interpolant automaton has 4 states [2018-06-24 20:55:12,816 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-24 20:55:12,816 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-24 20:55:12,817 INFO ]: Start difference. First operand 9 states and 17 transitions. Second operand 4 states. [2018-06-24 20:55:12,893 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:55:12,894 INFO ]: Finished difference Result 15 states and 27 transitions. [2018-06-24 20:55:12,894 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-24 20:55:12,894 INFO ]: Start accepts. Automaton has 4 states. Word has length 7 [2018-06-24 20:55:12,894 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:55:12,895 INFO ]: With dead ends: 15 [2018-06-24 20:55:12,895 INFO ]: Without dead ends: 15 [2018-06-24 20:55:12,895 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 [2018-06-24 20:55:12,895 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-24 20:55:12,897 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 9. [2018-06-24 20:55:12,897 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-24 20:55:12,897 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 17 transitions. [2018-06-24 20:55:12,897 INFO ]: Start accepts. Automaton has 9 states and 17 transitions. Word has length 7 [2018-06-24 20:55:12,898 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:55:12,898 INFO ]: Abstraction has 9 states and 17 transitions. [2018-06-24 20:55:12,898 INFO ]: Interpolant automaton has 4 states. [2018-06-24 20:55:12,898 INFO ]: Start isEmpty. Operand 9 states and 17 transitions. [2018-06-24 20:55:12,898 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-24 20:55:12,898 INFO ]: Found error trace [2018-06-24 20:55:12,898 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:55:12,898 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:55:12,898 INFO ]: Analyzing trace with hash -1777295212, now seen corresponding path program 1 times [2018-06-24 20:55:12,898 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:55:12,898 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:55:12,899 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:55:12,899 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:55:12,899 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:55:12,912 INFO ]: Conjunction of SSA is sat [2018-06-24 20:55:12,914 INFO ]: Counterexample might be feasible [2018-06-24 20:55:12,927 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 20:55:12,928 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:55:12 BasicIcfg [2018-06-24 20:55:12,928 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 20:55:12,929 INFO ]: Toolchain (without parser) took 1927.39 ms. Allocated memory is still 309.3 MB. Free memory was 264.7 MB in the beginning and 210.5 MB in the end (delta: 54.2 MB). Peak memory consumption was 54.2 MB. Max. memory is 3.6 GB. [2018-06-24 20:55:12,931 INFO ]: SmtParser took 0.09 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. [2018-06-24 20:55:12,931 INFO ]: ChcToBoogie took 66.04 ms. Allocated memory is still 309.3 MB. Free memory was 264.7 MB in the beginning and 262.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:55:12,932 INFO ]: Boogie Preprocessor took 35.47 ms. Allocated memory is still 309.3 MB. Free memory was 262.7 MB in the beginning and 260.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:55:12,933 INFO ]: RCFGBuilder took 373.63 ms. Allocated memory is still 309.3 MB. Free memory was 260.7 MB in the beginning and 250.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:55:12,933 INFO ]: BlockEncodingV2 took 181.32 ms. Allocated memory is still 309.3 MB. Free memory was 250.7 MB in the beginning and 245.7 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:55:12,934 INFO ]: TraceAbstraction took 1256.33 ms. Allocated memory is still 309.3 MB. Free memory was 245.7 MB in the beginning and 210.5 MB in the end (delta: 35.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 3.6 GB. [2018-06-24 20:55:12,937 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 13 locations, 17 edges - StatisticsResult: Encoded RCFG 7 locations, 13 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 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 66.04 ms. Allocated memory is still 309.3 MB. Free memory was 264.7 MB in the beginning and 262.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 35.47 ms. Allocated memory is still 309.3 MB. Free memory was 262.7 MB in the beginning and 260.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 373.63 ms. Allocated memory is still 309.3 MB. Free memory was 260.7 MB in the beginning and 250.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 181.32 ms. Allocated memory is still 309.3 MB. Free memory was 250.7 MB in the beginning and 245.7 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1256.33 ms. Allocated memory is still 309.3 MB. Free memory was 245.7 MB in the beginning and 210.5 MB in the end (delta: 35.2 MB). Peak memory consumption was 35.2 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, 0); [L0] assume hbv_inv_main32_1_Int == 0; [L0] hhv_inv_main21_0_Int, hhv_inv_main21_1_Int, hhv_inv_main21_2_Int, hhv_inv_main21_3_Int, hhv_inv_main21_4_Int, hhv_inv_main21_5_Int := hhv_inv_main32_0_Int, hhv_inv_main32_1_Int, hhv_inv_main32_2_Int, hbv_inv_main32_2_Int, hbv_inv_main32_3_Int, hhv_inv_main32_3_Int; [L0] havoc hbv_inv_main32_2_Int, hbv_inv_main32_3_Int, hbv_inv_main32_1_Int; [L0] assume ((((hhv_inv_main21_4_Int == hbv_inv_main21_4_Int + -1 && 0 <= hbv_inv_main21_4_Int + -1) && 0 <= hhv_inv_main21_3_Int + -1) && hhv_inv_main21_5_Int == hbv_inv_main21_2_Int + 1) && !(hbv_inv_main21_1_Int == 0)) && !(hbv_inv_main21_3_Int == 0); [L0] hhv_inv_main21_0_Int, hhv_inv_main21_1_Int, hhv_inv_main21_2_Int, hhv_inv_main21_3_Int, hhv_inv_main21_4_Int, hhv_inv_main21_5_Int := hhv_inv_main21_0_Int, hhv_inv_main21_1_Int, hhv_inv_main21_2_Int, hhv_inv_main21_3_Int, hbv_inv_main21_4_Int, hbv_inv_main21_2_Int; [L0] havoc hbv_inv_main21_4_Int, hbv_inv_main21_2_Int, hbv_inv_main21_1_Int, hbv_inv_main21_3_Int; [L0] assume ((hhv_inv_main21_3_Int == hhv_inv_main21_0_Int && !(0 <= hbv_inv_main21_1_Int + -1 && !(hbv_inv_main21_2_Int == 0))) && hhv_inv_main21_4_Int == hhv_inv_main21_1_Int) && hhv_inv_main21_5_Int == 0; [L0] hhv_inv_main9_0_Int, hhv_inv_main9_1_Int, hhv_inv_main9_2_Int, hhv_inv_main9_3_Int, hhv_inv_main9_4_Int := hhv_inv_main21_0_Int, hhv_inv_main21_1_Int, hbv_inv_main21_3_Int, hbv_inv_main21_1_Int, hhv_inv_main21_2_Int; [L0] havoc hbv_inv_main21_2_Int, hbv_inv_main21_1_Int, hbv_inv_main21_3_Int; [L0] RET call gotoProc(0, 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, 5 OverallIterations, 1 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 16 SDslu, 38 SDs, 0 SdLazy, 57 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 13 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 209 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 2/2 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/while-if_safe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_20-55-12-949.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/while-if_safe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_20-55-12-949.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/while-if_safe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_20-55-12-949.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/while-if_safe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_20-55-12-949.csv Received shutdown request...