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/break_single_safe.c-1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 17:49:03,011 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 17:49:03,012 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 17:49:03,022 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 17:49:03,022 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 17:49:03,023 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 17:49:03,024 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 17:49:03,027 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 17:49:03,028 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 17:49:03,029 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 17:49:03,030 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 17:49:03,030 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 17:49:03,032 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 17:49:03,033 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 17:49:03,034 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 17:49:03,035 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 17:49:03,036 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 17:49:03,038 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 17:49:03,040 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 17:49:03,041 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 17:49:03,042 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 17:49:03,043 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 17:49:03,046 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 17:49:03,046 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 17:49:03,046 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 17:49:03,047 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 17:49:03,048 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 17:49:03,049 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 17:49:03,049 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 17:49:03,050 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 17:49:03,051 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 17:49:03,051 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 17:49:03,051 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 17:49:03,052 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 17:49:03,053 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 17:49:03,053 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 17:49:03,054 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 17:49:03,075 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 17:49:03,075 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 17:49:03,076 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 17:49:03,076 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 17:49:03,077 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 17:49:03,077 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 17:49:03,077 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 17:49:03,077 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 17:49:03,078 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 17:49:03,081 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 17:49:03,081 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 17:49:03,081 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 17:49:03,081 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 17:49:03,082 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 17:49:03,082 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 17:49:03,082 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 17:49:03,082 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 17:49:03,082 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 17:49:03,083 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 17:49:03,083 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 17:49:03,083 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 17:49:03,084 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 17:49:03,085 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 17:49:03,136 INFO ]: Repository-Root is: /tmp [2018-06-26 17:49:03,157 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 17:49:03,162 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 17:49:03,164 INFO ]: Initializing SmtParser... [2018-06-26 17:49:03,164 INFO ]: SmtParser initialized [2018-06-26 17:49:03,165 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/llreve/break_single_safe.c-1.smt2 [2018-06-26 17:49:03,166 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 17:49:03,259 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/break_single_safe.c-1.smt2 unknown [2018-06-26 17:49:03,445 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/break_single_safe.c-1.smt2 [2018-06-26 17:49:03,449 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 17:49:03,456 INFO ]: Walking toolchain with 5 elements. [2018-06-26 17:49:03,457 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 17:49:03,457 INFO ]: Initializing ChcToBoogie... [2018-06-26 17:49:03,457 INFO ]: ChcToBoogie initialized [2018-06-26 17:49:03,461 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:49:03" (1/1) ... [2018-06-26 17:49:03,519 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:49:03 Unit [2018-06-26 17:49:03,519 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 17:49:03,520 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 17:49:03,520 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 17:49:03,520 INFO ]: Boogie Preprocessor initialized [2018-06-26 17:49:03,534 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:49:03" (1/1) ... [2018-06-26 17:49:03,534 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:49:03" (1/1) ... [2018-06-26 17:49:03,538 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:49:03" (1/1) ... [2018-06-26 17:49:03,539 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:49:03" (1/1) ... [2018-06-26 17:49:03,541 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:49:03" (1/1) ... [2018-06-26 17:49:03,543 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:49:03" (1/1) ... [2018-06-26 17:49:03,544 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:49:03" (1/1) ... [2018-06-26 17:49:03,545 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 17:49:03,547 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 17:49:03,547 INFO ]: Initializing RCFGBuilder... [2018-06-26 17:49:03,547 INFO ]: RCFGBuilder initialized [2018-06-26 17:49:03,548 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:49:03" (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) [2018-06-26 17:49:03,559 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 17:49:03,559 INFO ]: Found specification of procedure gotoProc [2018-06-26 17:49:03,559 INFO ]: Found implementation of procedure gotoProc [2018-06-26 17:49:03,559 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 17:49:03,560 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 17:49:03,560 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 [2018-06-26 17:49:03,851 INFO ]: Using library mode [2018-06-26 17:49:03,851 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:49:03 BoogieIcfgContainer [2018-06-26 17:49:03,851 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 17:49:03,851 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 17:49:03,852 INFO ]: Initializing BlockEncodingV2... [2018-06-26 17:49:03,852 INFO ]: BlockEncodingV2 initialized [2018-06-26 17:49:03,853 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:49:03" (1/1) ... [2018-06-26 17:49:03,867 INFO ]: Initial Icfg 13 locations, 15 edges [2018-06-26 17:49:03,869 INFO ]: Using Remove infeasible edges [2018-06-26 17:49:03,869 INFO ]: Using Maximize final states [2018-06-26 17:49:03,869 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 17:49:03,870 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 17:49:03,871 INFO ]: Using Remove sink states [2018-06-26 17:49:03,872 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 17:49:03,872 INFO ]: Using Use SBE [2018-06-26 17:49:03,888 INFO ]: SBE split 2 edges [2018-06-26 17:49:03,892 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-26 17:49:03,894 INFO ]: 0 new accepting states [2018-06-26 17:49:03,977 INFO ]: Removed 10 edges and 4 locations by large block encoding [2018-06-26 17:49:03,979 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:49:03,980 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 17:49:03,981 INFO ]: 0 new accepting states [2018-06-26 17:49:03,981 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 17:49:03,981 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:49:03,981 INFO ]: Encoded RCFG 7 locations, 12 edges [2018-06-26 17:49:03,982 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:49:03 BasicIcfg [2018-06-26 17:49:03,982 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 17:49:03,983 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 17:49:03,983 INFO ]: Initializing TraceAbstraction... [2018-06-26 17:49:03,986 INFO ]: TraceAbstraction initialized [2018-06-26 17:49:03,986 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:49:03" (1/4) ... [2018-06-26 17:49:03,987 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d179a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 05:49:03, skipping insertion in model container [2018-06-26 17:49:03,988 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:49:03" (2/4) ... [2018-06-26 17:49:03,988 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d179a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 05:49:03, skipping insertion in model container [2018-06-26 17:49:03,988 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:49:03" (3/4) ... [2018-06-26 17:49:03,988 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d179a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:49:03, skipping insertion in model container [2018-06-26 17:49:03,988 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:49:03" (4/4) ... [2018-06-26 17:49:03,991 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 17:49:03,999 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 17:49:04,007 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 17:49:04,048 INFO ]: Using default assertion order modulation [2018-06-26 17:49:04,049 INFO ]: Interprodecural is true [2018-06-26 17:49:04,049 INFO ]: Hoare is false [2018-06-26 17:49:04,049 INFO ]: Compute interpolants for FPandBP [2018-06-26 17:49:04,049 INFO ]: Backedges is TWOTRACK [2018-06-26 17:49:04,049 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 17:49:04,049 INFO ]: Difference is false [2018-06-26 17:49:04,049 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 17:49:04,049 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 17:49:04,059 INFO ]: Start isEmpty. Operand 7 states. [2018-06-26 17:49:04,069 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 17:49:04,069 INFO ]: Found error trace [2018-06-26 17:49:04,069 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 17:49:04,070 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:49:04,075 INFO ]: Analyzing trace with hash 964716632, now seen corresponding path program 1 times [2018-06-26 17:49:04,077 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:49:04,077 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:49:04,114 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:49:04,114 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:49:04,114 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:49:04,155 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:49:04,229 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:49:04,231 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:49:04,231 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-26 17:49:04,232 INFO ]: Interpolant automaton has 4 states [2018-06-26 17:49:04,244 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-26 17:49:04,244 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-26 17:49:04,247 INFO ]: Start difference. First operand 7 states. Second operand 4 states. [2018-06-26 17:49:04,399 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:49:04,399 INFO ]: Finished difference Result 11 states and 20 transitions. [2018-06-26 17:49:04,400 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-26 17:49:04,400 INFO ]: Start accepts. Automaton has 4 states. Word has length 6 [2018-06-26 17:49:04,401 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:49:04,410 INFO ]: With dead ends: 11 [2018-06-26 17:49:04,410 INFO ]: Without dead ends: 11 [2018-06-26 17:49:04,413 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 17:49:04,429 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-26 17:49:04,442 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 9. [2018-06-26 17:49:04,443 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-26 17:49:04,443 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 17 transitions. [2018-06-26 17:49:04,444 INFO ]: Start accepts. Automaton has 9 states and 17 transitions. Word has length 6 [2018-06-26 17:49:04,445 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:49:04,445 INFO ]: Abstraction has 9 states and 17 transitions. [2018-06-26 17:49:04,445 INFO ]: Interpolant automaton has 4 states. [2018-06-26 17:49:04,445 INFO ]: Start isEmpty. Operand 9 states and 17 transitions. [2018-06-26 17:49:04,445 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-26 17:49:04,445 INFO ]: Found error trace [2018-06-26 17:49:04,445 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:49:04,445 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:49:04,445 INFO ]: Analyzing trace with hash -159110834, now seen corresponding path program 1 times [2018-06-26 17:49:04,445 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:49:04,445 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:49:04,446 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:49:04,446 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:49:04,446 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:49:04,463 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:49:04,523 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:49:04,523 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 17:49:04,523 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 17:49:04,530 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:49:04,564 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:49:04,572 INFO ]: Computing forward predicates... [2018-06-26 17:49:04,699 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:49:04,731 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-26 17:49:04,731 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2018-06-26 17:49:04,731 INFO ]: Interpolant automaton has 6 states [2018-06-26 17:49:04,731 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-26 17:49:04,731 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-26 17:49:04,732 INFO ]: Start difference. First operand 9 states and 17 transitions. Second operand 6 states. [2018-06-26 17:49:05,070 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:49:05,071 INFO ]: Finished difference Result 14 states and 25 transitions. [2018-06-26 17:49:05,071 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-26 17:49:05,071 INFO ]: Start accepts. Automaton has 6 states. Word has length 7 [2018-06-26 17:49:05,071 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:49:05,071 INFO ]: With dead ends: 14 [2018-06-26 17:49:05,071 INFO ]: Without dead ends: 11 [2018-06-26 17:49:05,072 INFO ]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2018-06-26 17:49:05,073 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-26 17:49:05,074 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 10. [2018-06-26 17:49:05,074 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-26 17:49:05,075 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 18 transitions. [2018-06-26 17:49:05,075 INFO ]: Start accepts. Automaton has 10 states and 18 transitions. Word has length 7 [2018-06-26 17:49:05,075 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:49:05,075 INFO ]: Abstraction has 10 states and 18 transitions. [2018-06-26 17:49:05,075 INFO ]: Interpolant automaton has 6 states. [2018-06-26 17:49:05,075 INFO ]: Start isEmpty. Operand 10 states and 18 transitions. [2018-06-26 17:49:05,075 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-26 17:49:05,075 INFO ]: Found error trace [2018-06-26 17:49:05,075 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:49:05,075 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:49:05,075 INFO ]: Analyzing trace with hash -167065031, now seen corresponding path program 1 times [2018-06-26 17:49:05,075 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:49:05,076 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:49:05,076 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:49:05,076 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:49:05,076 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:49:05,087 INFO ]: Conjunction of SSA is sat [2018-06-26 17:49:05,088 INFO ]: Counterexample might be feasible [2018-06-26 17:49:05,110 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 17:49:05,111 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:49:05 BasicIcfg [2018-06-26 17:49:05,111 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 17:49:05,112 INFO ]: Toolchain (without parser) took 1662.39 ms. Allocated memory is still 307.8 MB. Free memory was 264.1 MB in the beginning and 207.7 MB in the end (delta: 56.4 MB). Peak memory consumption was 56.4 MB. Max. memory is 3.6 GB. [2018-06-26 17:49:05,113 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 307.8 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 17:49:05,113 INFO ]: ChcToBoogie took 62.47 ms. Allocated memory is still 307.8 MB. Free memory was 264.1 MB in the beginning and 262.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:49:05,114 INFO ]: Boogie Preprocessor took 25.74 ms. Allocated memory is still 307.8 MB. Free memory was 262.1 MB in the beginning and 260.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:49:05,114 INFO ]: RCFGBuilder took 304.03 ms. Allocated memory is still 307.8 MB. Free memory was 260.1 MB in the beginning and 252.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:49:05,115 INFO ]: BlockEncodingV2 took 130.48 ms. Allocated memory is still 307.8 MB. Free memory was 252.1 MB in the beginning and 248.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:49:05,116 INFO ]: TraceAbstraction took 1128.39 ms. Allocated memory is still 307.8 MB. Free memory was 248.1 MB in the beginning and 207.7 MB in the end (delta: 40.4 MB). Peak memory consumption was 40.4 MB. Max. memory is 3.6 GB. [2018-06-26 17:49:05,122 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 13 locations, 15 edges - StatisticsResult: Encoded RCFG 7 locations, 12 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 307.8 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 62.47 ms. Allocated memory is still 307.8 MB. Free memory was 264.1 MB in the beginning and 262.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 25.74 ms. Allocated memory is still 307.8 MB. Free memory was 262.1 MB in the beginning and 260.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 304.03 ms. Allocated memory is still 307.8 MB. Free memory was 260.1 MB in the beginning and 252.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 130.48 ms. Allocated memory is still 307.8 MB. Free memory was 252.1 MB in the beginning and 248.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1128.39 ms. Allocated memory is still 307.8 MB. Free memory was 248.1 MB in the beginning and 207.7 MB in the end (delta: 40.4 MB). Peak memory consumption was 40.4 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); [L0] assume !((!(hhv_inv_main24_2_Int == hbv_inv_main24_1_Int) && !(hbv_inv_main24_2_Int == 0)) && 0 <= 10 + -1 * hhv_inv_main24_2_Int); [L0] hhv_inv_main19_0_Int, hhv_inv_main19_1_Int, hhv_inv_main19_2_Int, hhv_inv_main19_3_Int := hhv_inv_main24_0_Int, hhv_inv_main24_1_Int, hbv_inv_main24_1_Int, hhv_inv_main24_2_Int; [L0] havoc hbv_inv_main24_1_Int, hbv_inv_main24_2_Int; [L0] assume ((!(hbv_inv_main19_2_Int == 0) && 0 <= 10 + -1 * hbv_inv_main19_1_Int) && !(hbv_inv_main19_1_Int == hhv_inv_main19_2_Int)) && hhv_inv_main19_3_Int == hbv_inv_main19_1_Int + 1; [L0] hhv_inv_main19_0_Int, hhv_inv_main19_1_Int, hhv_inv_main19_2_Int, hhv_inv_main19_3_Int := hhv_inv_main19_0_Int, hhv_inv_main19_1_Int, hhv_inv_main19_2_Int, hbv_inv_main19_1_Int; [L0] havoc hbv_inv_main19_2_Int, hbv_inv_main19_1_Int; [L0] assume (hhv_inv_main19_2_Int == hhv_inv_main19_0_Int && hhv_inv_main19_3_Int == 0) && !(!(hbv_inv_main19_1_Int == 0) && 0 <= 10 + -1 * hhv_inv_main19_1_Int); [L0] hhv_inv_main7_0_Int, hhv_inv_main7_1_Int, hhv_inv_main7_2_Int := hhv_inv_main19_0_Int, hbv_inv_main19_2_Int, hhv_inv_main19_1_Int; [L0] havoc hbv_inv_main19_2_Int, hbv_inv_main19_1_Int; [L0] RET call gotoProc(0, 0, 0, 0, 0); [L0] assert false; - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 7 locations, 1 error locations. UNSAFE Result, 1.0s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14 SDtfs, 8 SDslu, 34 SDs, 0 SdLazy, 47 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 SizeOfPredicates, 7 NumberOfNonLiveVariables, 64 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 1/2 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/break_single_safe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_17-49-05-137.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/break_single_safe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_17-49-05-137.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/break_single_safe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_17-49-05-137.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/break_single_safe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_17-49-05-137.csv Received shutdown request...