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_after_while_if_safe.c-1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 17:56:39,693 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 17:56:39,695 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 17:56:39,708 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 17:56:39,709 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 17:56:39,710 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 17:56:39,711 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 17:56:39,714 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 17:56:39,716 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 17:56:39,716 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 17:56:39,718 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 17:56:39,718 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 17:56:39,719 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 17:56:39,720 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 17:56:39,722 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 17:56:39,723 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 17:56:39,724 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 17:56:39,725 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 17:56:39,735 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 17:56:39,737 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 17:56:39,737 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 17:56:39,738 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 17:56:39,744 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 17:56:39,744 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 17:56:39,744 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 17:56:39,745 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 17:56:39,746 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 17:56:39,746 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 17:56:39,747 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 17:56:39,748 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 17:56:39,748 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 17:56:39,749 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 17:56:39,749 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 17:56:39,749 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 17:56:39,750 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 17:56:39,750 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 17:56:39,751 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 17:56:39,766 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 17:56:39,767 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 17:56:39,767 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 17:56:39,767 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 17:56:39,768 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 17:56:39,768 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 17:56:39,769 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 17:56:39,769 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 17:56:39,769 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 17:56:39,769 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 17:56:39,769 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 17:56:39,770 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 17:56:39,770 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 17:56:39,770 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 17:56:39,770 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 17:56:39,770 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 17:56:39,770 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 17:56:39,771 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 17:56:39,771 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 17:56:39,771 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 17:56:39,771 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 17:56:39,773 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 17:56:39,773 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 17:56:39,824 INFO ]: Repository-Root is: /tmp [2018-06-26 17:56:39,836 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 17:56:39,840 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 17:56:39,841 INFO ]: Initializing SmtParser... [2018-06-26 17:56:39,843 INFO ]: SmtParser initialized [2018-06-26 17:56:39,843 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/llreve/while_after_while_if_safe.c-1.smt2 [2018-06-26 17:56:39,845 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 17:56:39,933 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/while_after_while_if_safe.c-1.smt2 unknown [2018-06-26 17:56:40,217 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/while_after_while_if_safe.c-1.smt2 [2018-06-26 17:56:40,224 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 17:56:40,229 INFO ]: Walking toolchain with 5 elements. [2018-06-26 17:56:40,230 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 17:56:40,230 INFO ]: Initializing ChcToBoogie... [2018-06-26 17:56:40,230 INFO ]: ChcToBoogie initialized [2018-06-26 17:56:40,233 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:56:40" (1/1) ... [2018-06-26 17:56:40,294 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:56:40 Unit [2018-06-26 17:56:40,294 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 17:56:40,294 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 17:56:40,294 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 17:56:40,294 INFO ]: Boogie Preprocessor initialized [2018-06-26 17:56:40,314 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:56:40" (1/1) ... [2018-06-26 17:56:40,315 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:56:40" (1/1) ... [2018-06-26 17:56:40,321 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:56:40" (1/1) ... [2018-06-26 17:56:40,321 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:56:40" (1/1) ... [2018-06-26 17:56:40,330 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:56:40" (1/1) ... [2018-06-26 17:56:40,339 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:56:40" (1/1) ... [2018-06-26 17:56:40,341 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:56:40" (1/1) ... [2018-06-26 17:56:40,342 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 17:56:40,343 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 17:56:40,343 INFO ]: Initializing RCFGBuilder... [2018-06-26 17:56:40,343 INFO ]: RCFGBuilder initialized [2018-06-26 17:56:40,344 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:56:40" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 17:56:40,362 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 17:56:40,362 INFO ]: Found specification of procedure gotoProc [2018-06-26 17:56:40,362 INFO ]: Found implementation of procedure gotoProc [2018-06-26 17:56:40,362 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 17:56:40,362 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 17:56:40,362 INFO ]: Found implementation of procedure Ultimate.START [2018-06-26 17:56:40,700 INFO ]: Using library mode [2018-06-26 17:56:40,701 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:56:40 BoogieIcfgContainer [2018-06-26 17:56:40,701 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 17:56:40,701 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 17:56:40,701 INFO ]: Initializing BlockEncodingV2... [2018-06-26 17:56:40,702 INFO ]: BlockEncodingV2 initialized [2018-06-26 17:56:40,703 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:56:40" (1/1) ... [2018-06-26 17:56:40,718 INFO ]: Initial Icfg 15 locations, 21 edges [2018-06-26 17:56:40,719 INFO ]: Using Remove infeasible edges [2018-06-26 17:56:40,720 INFO ]: Using Maximize final states [2018-06-26 17:56:40,720 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 17:56:40,721 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 17:56:40,722 INFO ]: Using Remove sink states [2018-06-26 17:56:40,724 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 17:56:40,724 INFO ]: Using Use SBE [2018-06-26 17:56:40,744 INFO ]: SBE split 4 edges [2018-06-26 17:56:40,748 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-26 17:56:40,750 INFO ]: 0 new accepting states [2018-06-26 17:56:40,812 INFO ]: Removed 11 edges and 4 locations by large block encoding [2018-06-26 17:56:40,813 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:56:40,814 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 17:56:40,814 INFO ]: 0 new accepting states [2018-06-26 17:56:40,814 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 17:56:40,815 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:56:40,815 INFO ]: Encoded RCFG 9 locations, 19 edges [2018-06-26 17:56:40,815 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:56:40 BasicIcfg [2018-06-26 17:56:40,815 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 17:56:40,816 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 17:56:40,816 INFO ]: Initializing TraceAbstraction... [2018-06-26 17:56:40,819 INFO ]: TraceAbstraction initialized [2018-06-26 17:56:40,819 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:56:40" (1/4) ... [2018-06-26 17:56:40,820 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@195fbe48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 05:56:40, skipping insertion in model container [2018-06-26 17:56:40,820 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:56:40" (2/4) ... [2018-06-26 17:56:40,821 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@195fbe48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 05:56:40, skipping insertion in model container [2018-06-26 17:56:40,823 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:56:40" (3/4) ... [2018-06-26 17:56:40,823 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@195fbe48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:56:40, skipping insertion in model container [2018-06-26 17:56:40,823 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:56:40" (4/4) ... [2018-06-26 17:56:40,824 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 17:56:40,830 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 17:56:40,836 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 17:56:40,872 INFO ]: Using default assertion order modulation [2018-06-26 17:56:40,872 INFO ]: Interprodecural is true [2018-06-26 17:56:40,872 INFO ]: Hoare is false [2018-06-26 17:56:40,872 INFO ]: Compute interpolants for FPandBP [2018-06-26 17:56:40,872 INFO ]: Backedges is TWOTRACK [2018-06-26 17:56:40,872 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 17:56:40,872 INFO ]: Difference is false [2018-06-26 17:56:40,872 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 17:56:40,873 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 17:56:40,882 INFO ]: Start isEmpty. Operand 9 states. [2018-06-26 17:56:40,892 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-26 17:56:40,892 INFO ]: Found error trace [2018-06-26 17:56:40,893 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:56:40,893 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:56:40,901 INFO ]: Analyzing trace with hash 976471345, now seen corresponding path program 1 times [2018-06-26 17:56:40,903 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:56:40,903 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:56:40,940 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:56:40,941 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:56:40,941 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:56:40,991 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:56:41,075 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:56:41,077 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:56:41,077 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-26 17:56:41,079 INFO ]: Interpolant automaton has 5 states [2018-06-26 17:56:41,091 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-26 17:56:41,091 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-26 17:56:41,093 INFO ]: Start difference. First operand 9 states. Second operand 5 states. [2018-06-26 17:56:41,489 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:56:41,489 INFO ]: Finished difference Result 21 states and 51 transitions. [2018-06-26 17:56:41,489 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-26 17:56:41,490 INFO ]: Start accepts. Automaton has 5 states. Word has length 7 [2018-06-26 17:56:41,490 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:56:41,502 INFO ]: With dead ends: 21 [2018-06-26 17:56:41,502 INFO ]: Without dead ends: 21 [2018-06-26 17:56:41,504 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-26 17:56:41,519 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-26 17:56:41,534 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 12. [2018-06-26 17:56:41,535 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-26 17:56:41,536 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 30 transitions. [2018-06-26 17:56:41,537 INFO ]: Start accepts. Automaton has 12 states and 30 transitions. Word has length 7 [2018-06-26 17:56:41,537 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:56:41,537 INFO ]: Abstraction has 12 states and 30 transitions. [2018-06-26 17:56:41,537 INFO ]: Interpolant automaton has 5 states. [2018-06-26 17:56:41,537 INFO ]: Start isEmpty. Operand 12 states and 30 transitions. [2018-06-26 17:56:41,538 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-26 17:56:41,538 INFO ]: Found error trace [2018-06-26 17:56:41,538 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:56:41,538 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:56:41,538 INFO ]: Analyzing trace with hash 160333539, now seen corresponding path program 1 times [2018-06-26 17:56:41,538 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:56:41,538 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:56:41,539 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:56:41,539 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:56:41,539 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:56:41,557 INFO ]: Conjunction of SSA is sat [2018-06-26 17:56:41,563 INFO ]: Counterexample might be feasible [2018-06-26 17:56:41,574 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 17:56:41,575 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:56:41 BasicIcfg [2018-06-26 17:56:41,575 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 17:56:41,576 INFO ]: Toolchain (without parser) took 1350.87 ms. Allocated memory is still 306.2 MB. Free memory was 259.6 MB in the beginning and 207.3 MB in the end (delta: 52.3 MB). Peak memory consumption was 52.3 MB. Max. memory is 3.6 GB. [2018-06-26 17:56:41,577 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 306.2 MB. Free memory is still 271.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 17:56:41,578 INFO ]: ChcToBoogie took 64.48 ms. Allocated memory is still 306.2 MB. Free memory was 259.6 MB in the beginning and 257.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:56:41,578 INFO ]: Boogie Preprocessor took 48.09 ms. Allocated memory is still 306.2 MB. Free memory was 257.5 MB in the beginning and 255.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:56:41,579 INFO ]: RCFGBuilder took 357.98 ms. Allocated memory is still 306.2 MB. Free memory was 255.5 MB in the beginning and 242.5 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:56:41,579 INFO ]: BlockEncodingV2 took 113.96 ms. Allocated memory is still 306.2 MB. Free memory was 242.5 MB in the beginning and 237.5 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:56:41,580 INFO ]: TraceAbstraction took 758.58 ms. Allocated memory is still 306.2 MB. Free memory was 236.5 MB in the beginning and 207.3 MB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 3.6 GB. [2018-06-26 17:56:41,584 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 15 locations, 21 edges - StatisticsResult: Encoded RCFG 9 locations, 19 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 306.2 MB. Free memory is still 271.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 64.48 ms. Allocated memory is still 306.2 MB. Free memory was 259.6 MB in the beginning and 257.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 48.09 ms. Allocated memory is still 306.2 MB. Free memory was 257.5 MB in the beginning and 255.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 357.98 ms. Allocated memory is still 306.2 MB. Free memory was 255.5 MB in the beginning and 242.5 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 113.96 ms. Allocated memory is still 306.2 MB. Free memory was 242.5 MB in the beginning and 237.5 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 758.58 ms. Allocated memory is still 306.2 MB. Free memory was 236.5 MB in the beginning and 207.3 MB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 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, 0, 0); [L0] assume !(!(hbv_inv_main42_1_Int == 0) && 0 <= hbv_inv_main42_2_Int + -1); [L0] hhv_inv_main27_0_Int, hhv_inv_main27_1_Int, hhv_inv_main27_2_Int, hhv_inv_main27_3_Int, hhv_inv_main27_4_Int, hhv_inv_main27_5_Int, hhv_inv_main27_6_Int, hhv_inv_main27_7_Int := hhv_inv_main42_0_Int, hhv_inv_main42_1_Int, hhv_inv_main42_2_Int, hhv_inv_main42_3_Int, hbv_inv_main42_3_Int, hbv_inv_main42_4_Int, hbv_inv_main42_2_Int, hhv_inv_main42_4_Int; [L0] havoc hbv_inv_main42_3_Int, hbv_inv_main42_1_Int, hbv_inv_main42_4_Int, hbv_inv_main42_2_Int; [L0] assume ((hhv_inv_main27_6_Int == hbv_inv_main27_3_Int + -1 && 0 <= hbv_inv_main27_3_Int + -1) && !(hbv_inv_main27_2_Int == 0)) && hhv_inv_main27_7_Int == hbv_inv_main27_1_Int + 2; [L0] hhv_inv_main27_0_Int, hhv_inv_main27_1_Int, hhv_inv_main27_2_Int, hhv_inv_main27_3_Int, hhv_inv_main27_4_Int, hhv_inv_main27_5_Int, hhv_inv_main27_6_Int, hhv_inv_main27_7_Int := hhv_inv_main27_0_Int, hhv_inv_main27_1_Int, hhv_inv_main27_2_Int, hhv_inv_main27_3_Int, hhv_inv_main27_4_Int, hhv_inv_main27_5_Int, hbv_inv_main27_3_Int, hbv_inv_main27_1_Int; [L0] havoc hbv_inv_main27_1_Int, hbv_inv_main27_2_Int, hbv_inv_main27_3_Int; [L0] assume hbv_inv_main27_1_Int == 0; [L0] hhv_inv_main26_0_Int, hhv_inv_main26_1_Int, hhv_inv_main26_2_Int, hhv_inv_main26_3_Int, hhv_inv_main26_4_Int, hhv_inv_main26_5_Int, hhv_inv_main26_6_Int, hhv_inv_main26_7_Int := hhv_inv_main27_0_Int, hhv_inv_main27_1_Int, hhv_inv_main27_2_Int, hhv_inv_main27_3_Int, hhv_inv_main27_4_Int, hhv_inv_main27_5_Int, hhv_inv_main27_6_Int, hhv_inv_main27_7_Int; [L0] havoc hbv_inv_main27_1_Int; [L0] assume (((hhv_inv_main26_5_Int == hhv_inv_main26_1_Int && hhv_inv_main26_6_Int == hhv_inv_main26_2_Int) && hhv_inv_main26_7_Int == 0) && !(!(hbv_inv_main26_1_Int == 0) && 0 <= hbv_inv_main26_2_Int + -1)) && hhv_inv_main26_4_Int == hhv_inv_main26_0_Int; [L0] hhv_inv_main8_0_Int, hhv_inv_main8_1_Int, hhv_inv_main8_2_Int, hhv_inv_main8_3_Int, hhv_inv_main8_4_Int, hhv_inv_main8_5_Int, hhv_inv_main8_6_Int := hhv_inv_main26_0_Int, hhv_inv_main26_1_Int, hhv_inv_main26_2_Int, hbv_inv_main26_3_Int, hbv_inv_main26_4_Int, hbv_inv_main26_2_Int, hhv_inv_main26_3_Int; [L0] havoc hbv_inv_main26_2_Int, hbv_inv_main26_1_Int, hbv_inv_main26_4_Int, hbv_inv_main26_3_Int; [L0] RET call gotoProc(0, 0, 0, 0, 0, 0, 0, 0, 0); [L0] assert false; - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 9 locations, 1 error locations. UNSAFE Result, 0.7s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12 SDtfs, 35 SDslu, 47 SDs, 0 SdLazy, 54 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 1 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 90 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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_after_while_if_safe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_17-56-41-596.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/while_after_while_if_safe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_17-56-41-596.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/while_after_while_if_safe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_17-56-41-596.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/while_after_while_if_safe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_17-56-41-596.csv Received shutdown request...