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/03_while_unsafe.c-1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 17:46:16,996 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 17:46:16,998 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 17:46:17,013 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 17:46:17,013 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 17:46:17,014 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 17:46:17,015 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 17:46:17,018 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 17:46:17,020 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 17:46:17,021 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 17:46:17,022 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 17:46:17,023 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 17:46:17,023 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 17:46:17,024 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 17:46:17,027 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 17:46:17,028 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 17:46:17,028 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 17:46:17,037 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 17:46:17,039 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 17:46:17,040 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 17:46:17,041 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 17:46:17,045 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 17:46:17,047 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 17:46:17,047 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 17:46:17,047 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 17:46:17,049 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 17:46:17,050 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 17:46:17,051 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 17:46:17,051 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 17:46:17,052 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 17:46:17,052 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 17:46:17,057 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 17:46:17,057 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 17:46:17,057 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 17:46:17,058 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 17:46:17,058 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 17:46:17,059 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 17:46:17,082 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 17:46:17,082 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 17:46:17,082 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 17:46:17,082 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 17:46:17,083 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 17:46:17,083 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 17:46:17,084 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 17:46:17,084 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 17:46:17,084 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 17:46:17,084 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 17:46:17,084 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 17:46:17,085 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 17:46:17,086 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 17:46:17,086 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 17:46:17,086 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 17:46:17,086 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 17:46:17,086 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 17:46:17,087 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 17:46:17,087 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 17:46:17,087 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 17:46:17,087 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 17:46:17,090 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 17:46:17,090 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 17:46:17,137 INFO ]: Repository-Root is: /tmp [2018-06-26 17:46:17,156 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 17:46:17,162 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 17:46:17,164 INFO ]: Initializing SmtParser... [2018-06-26 17:46:17,164 INFO ]: SmtParser initialized [2018-06-26 17:46:17,165 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/llreve/03_while_unsafe.c-1.smt2 [2018-06-26 17:46:17,166 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 17:46:17,265 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/03_while_unsafe.c-1.smt2 unknown [2018-06-26 17:46:17,456 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/03_while_unsafe.c-1.smt2 [2018-06-26 17:46:17,461 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 17:46:17,477 INFO ]: Walking toolchain with 5 elements. [2018-06-26 17:46:17,478 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 17:46:17,478 INFO ]: Initializing ChcToBoogie... [2018-06-26 17:46:17,478 INFO ]: ChcToBoogie initialized [2018-06-26 17:46:17,482 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:46:17" (1/1) ... [2018-06-26 17:46:17,543 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:46:17 Unit [2018-06-26 17:46:17,544 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 17:46:17,545 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 17:46:17,545 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 17:46:17,545 INFO ]: Boogie Preprocessor initialized [2018-06-26 17:46:17,565 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:46:17" (1/1) ... [2018-06-26 17:46:17,565 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:46:17" (1/1) ... [2018-06-26 17:46:17,570 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:46:17" (1/1) ... [2018-06-26 17:46:17,570 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:46:17" (1/1) ... [2018-06-26 17:46:17,573 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:46:17" (1/1) ... [2018-06-26 17:46:17,576 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:46:17" (1/1) ... [2018-06-26 17:46:17,577 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:46:17" (1/1) ... [2018-06-26 17:46:17,578 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 17:46:17,579 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 17:46:17,579 INFO ]: Initializing RCFGBuilder... [2018-06-26 17:46:17,579 INFO ]: RCFGBuilder initialized [2018-06-26 17:46:17,581 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:46:17" (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 17:46:17,635 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 17:46:17,635 INFO ]: Found specification of procedure gotoProc [2018-06-26 17:46:17,635 INFO ]: Found implementation of procedure gotoProc [2018-06-26 17:46:17,635 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 17:46:17,635 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 17:46:17,635 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 17:46:17,954 INFO ]: Using library mode [2018-06-26 17:46:17,954 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:46:17 BoogieIcfgContainer [2018-06-26 17:46:17,954 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 17:46:17,955 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 17:46:17,955 INFO ]: Initializing BlockEncodingV2... [2018-06-26 17:46:17,955 INFO ]: BlockEncodingV2 initialized [2018-06-26 17:46:17,957 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:46:17" (1/1) ... [2018-06-26 17:46:17,973 INFO ]: Initial Icfg 13 locations, 14 edges [2018-06-26 17:46:17,974 INFO ]: Using Remove infeasible edges [2018-06-26 17:46:17,975 INFO ]: Using Maximize final states [2018-06-26 17:46:17,975 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 17:46:17,976 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 17:46:17,979 INFO ]: Using Remove sink states [2018-06-26 17:46:17,980 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 17:46:17,980 INFO ]: Using Use SBE [2018-06-26 17:46:17,987 INFO ]: SBE split 0 edges [2018-06-26 17:46:17,994 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-26 17:46:17,996 INFO ]: 0 new accepting states [2018-06-26 17:46:18,070 INFO ]: Removed 8 edges and 4 locations by large block encoding [2018-06-26 17:46:18,073 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:46:18,085 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 17:46:18,085 INFO ]: 0 new accepting states [2018-06-26 17:46:18,085 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 17:46:18,085 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:46:18,086 INFO ]: Encoded RCFG 7 locations, 8 edges [2018-06-26 17:46:18,086 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:46:18 BasicIcfg [2018-06-26 17:46:18,086 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 17:46:18,087 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 17:46:18,087 INFO ]: Initializing TraceAbstraction... [2018-06-26 17:46:18,090 INFO ]: TraceAbstraction initialized [2018-06-26 17:46:18,090 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:46:17" (1/4) ... [2018-06-26 17:46:18,100 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb8f3aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 05:46:18, skipping insertion in model container [2018-06-26 17:46:18,100 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:46:17" (2/4) ... [2018-06-26 17:46:18,100 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb8f3aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 05:46:18, skipping insertion in model container [2018-06-26 17:46:18,100 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:46:17" (3/4) ... [2018-06-26 17:46:18,101 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb8f3aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:46:18, skipping insertion in model container [2018-06-26 17:46:18,101 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:46:18" (4/4) ... [2018-06-26 17:46:18,102 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 17:46:18,117 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 17:46:18,136 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 17:46:18,186 INFO ]: Using default assertion order modulation [2018-06-26 17:46:18,186 INFO ]: Interprodecural is true [2018-06-26 17:46:18,186 INFO ]: Hoare is false [2018-06-26 17:46:18,186 INFO ]: Compute interpolants for FPandBP [2018-06-26 17:46:18,186 INFO ]: Backedges is TWOTRACK [2018-06-26 17:46:18,186 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 17:46:18,187 INFO ]: Difference is false [2018-06-26 17:46:18,187 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 17:46:18,187 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 17:46:18,196 INFO ]: Start isEmpty. Operand 7 states. [2018-06-26 17:46:18,210 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 17:46:18,210 INFO ]: Found error trace [2018-06-26 17:46:18,211 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 17:46:18,211 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:46:18,216 INFO ]: Analyzing trace with hash 987439445, now seen corresponding path program 1 times [2018-06-26 17:46:18,217 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:46:18,218 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:46:18,249 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:46:18,249 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:46:18,249 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:46:18,304 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:46:18,386 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:46:18,420 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:46:18,420 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-26 17:46:18,422 INFO ]: Interpolant automaton has 4 states [2018-06-26 17:46:18,433 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-26 17:46:18,434 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-26 17:46:18,436 INFO ]: Start difference. First operand 7 states. Second operand 4 states. [2018-06-26 17:46:18,592 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:46:18,592 INFO ]: Finished difference Result 11 states and 14 transitions. [2018-06-26 17:46:18,592 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-26 17:46:18,594 INFO ]: Start accepts. Automaton has 4 states. Word has length 6 [2018-06-26 17:46:18,594 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:46:18,603 INFO ]: With dead ends: 11 [2018-06-26 17:46:18,603 INFO ]: Without dead ends: 11 [2018-06-26 17:46:18,609 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 17:46:18,628 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-26 17:46:18,655 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 9. [2018-06-26 17:46:18,687 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-26 17:46:18,687 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2018-06-26 17:46:18,688 INFO ]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 6 [2018-06-26 17:46:18,688 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:46:18,689 INFO ]: Abstraction has 9 states and 11 transitions. [2018-06-26 17:46:18,689 INFO ]: Interpolant automaton has 4 states. [2018-06-26 17:46:18,689 INFO ]: Start isEmpty. Operand 9 states and 11 transitions. [2018-06-26 17:46:18,689 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-26 17:46:18,689 INFO ]: Found error trace [2018-06-26 17:46:18,689 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:46:18,689 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:46:18,689 INFO ]: Analyzing trace with hash 545379014, now seen corresponding path program 1 times [2018-06-26 17:46:18,689 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:46:18,689 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:46:18,690 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:46:18,690 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:46:18,690 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:46:18,730 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:46:18,998 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:46:18,998 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 17:46:18,998 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 17:46:19,020 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:46:19,073 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:46:19,080 INFO ]: Computing forward predicates... [2018-06-26 17:46:19,136 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:46:19,160 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-26 17:46:19,160 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2018-06-26 17:46:19,161 INFO ]: Interpolant automaton has 6 states [2018-06-26 17:46:19,161 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-26 17:46:19,161 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-26 17:46:19,161 INFO ]: Start difference. First operand 9 states and 11 transitions. Second operand 6 states. [2018-06-26 17:46:19,392 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:46:19,392 INFO ]: Finished difference Result 10 states and 12 transitions. [2018-06-26 17:46:19,392 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-26 17:46:19,392 INFO ]: Start accepts. Automaton has 6 states. Word has length 7 [2018-06-26 17:46:19,392 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:46:19,393 INFO ]: With dead ends: 10 [2018-06-26 17:46:19,393 INFO ]: Without dead ends: 8 [2018-06-26 17:46:19,394 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-06-26 17:46:19,394 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-26 17:46:19,395 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-06-26 17:46:19,395 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-26 17:46:19,395 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2018-06-26 17:46:19,395 INFO ]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 7 [2018-06-26 17:46:19,395 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:46:19,395 INFO ]: Abstraction has 8 states and 9 transitions. [2018-06-26 17:46:19,395 INFO ]: Interpolant automaton has 6 states. [2018-06-26 17:46:19,395 INFO ]: Start isEmpty. Operand 8 states and 9 transitions. [2018-06-26 17:46:19,396 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-26 17:46:19,396 INFO ]: Found error trace [2018-06-26 17:46:19,396 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:46:19,397 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:46:19,398 INFO ]: Analyzing trace with hash 546451490, now seen corresponding path program 1 times [2018-06-26 17:46:19,398 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:46:19,398 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:46:19,398 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:46:19,399 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:46:19,399 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:46:19,428 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:46:19,527 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:46:19,542 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:46:19,542 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-26 17:46:19,542 INFO ]: Interpolant automaton has 4 states [2018-06-26 17:46:19,542 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-26 17:46:19,542 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-26 17:46:19,543 INFO ]: Start difference. First operand 8 states and 9 transitions. Second operand 4 states. [2018-06-26 17:46:19,569 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:46:19,570 INFO ]: Finished difference Result 9 states and 10 transitions. [2018-06-26 17:46:19,570 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-26 17:46:19,570 INFO ]: Start accepts. Automaton has 4 states. Word has length 7 [2018-06-26 17:46:19,570 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:46:19,570 INFO ]: With dead ends: 9 [2018-06-26 17:46:19,570 INFO ]: Without dead ends: 9 [2018-06-26 17:46:19,571 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 17:46:19,571 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-26 17:46:19,572 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-26 17:46:19,572 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-26 17:46:19,572 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-06-26 17:46:19,572 INFO ]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2018-06-26 17:46:19,572 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:46:19,572 INFO ]: Abstraction has 9 states and 10 transitions. [2018-06-26 17:46:19,572 INFO ]: Interpolant automaton has 4 states. [2018-06-26 17:46:19,573 INFO ]: Start isEmpty. Operand 9 states and 10 transitions. [2018-06-26 17:46:19,573 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-26 17:46:19,573 INFO ]: Found error trace [2018-06-26 17:46:19,573 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:46:19,573 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:46:19,573 INFO ]: Analyzing trace with hash -240345703, now seen corresponding path program 1 times [2018-06-26 17:46:19,573 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:46:19,573 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:46:19,574 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:46:19,574 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:46:19,574 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:46:19,603 INFO ]: Conjunction of SSA is sat [2018-06-26 17:46:19,605 INFO ]: Counterexample might be feasible [2018-06-26 17:46:19,619 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 17:46:19,620 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:46:19 BasicIcfg [2018-06-26 17:46:19,675 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 17:46:19,676 INFO ]: Toolchain (without parser) took 2214.74 ms. Allocated memory is still 309.3 MB. Free memory was 264.6 MB in the beginning and 205.1 MB in the end (delta: 59.5 MB). Peak memory consumption was 59.5 MB. Max. memory is 3.6 GB. [2018-06-26 17:46:19,677 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 17:46:19,678 INFO ]: ChcToBoogie took 66.46 ms. Allocated memory is still 309.3 MB. Free memory was 264.6 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. [2018-06-26 17:46:19,678 INFO ]: Boogie Preprocessor took 33.71 ms. Allocated memory is still 309.3 MB. Free memory was 262.7 MB in the beginning and 261.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:46:19,679 INFO ]: RCFGBuilder took 375.36 ms. Allocated memory is still 309.3 MB. Free memory was 261.6 MB in the beginning and 251.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:46:19,680 INFO ]: BlockEncodingV2 took 131.56 ms. Allocated memory is still 309.3 MB. Free memory was 251.6 MB in the beginning and 248.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:46:19,683 INFO ]: TraceAbstraction took 1588.66 ms. Allocated memory is still 309.3 MB. Free memory was 248.6 MB in the beginning and 205.1 MB in the end (delta: 43.5 MB). Peak memory consumption was 43.5 MB. Max. memory is 3.6 GB. [2018-06-26 17:46:19,687 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 13 locations, 14 edges - StatisticsResult: Encoded RCFG 7 locations, 8 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 66.46 ms. Allocated memory is still 309.3 MB. Free memory was 264.6 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 33.71 ms. Allocated memory is still 309.3 MB. Free memory was 262.7 MB in the beginning and 261.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 375.36 ms. Allocated memory is still 309.3 MB. Free memory was 261.6 MB in the beginning and 251.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 131.56 ms. Allocated memory is still 309.3 MB. Free memory was 251.6 MB in the beginning and 248.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1588.66 ms. Allocated memory is still 309.3 MB. Free memory was 248.6 MB in the beginning and 205.1 MB in the end (delta: 43.5 MB). Peak memory consumption was 43.5 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 !(0 <= hbv_inv_main31_1_Int + -1 * hbv_inv_main31_2_Int + -1); [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_main31_0_Int, hhv_inv_main31_1_Int, hhv_inv_main31_2_Int, hbv_inv_main31_1_Int, hbv_inv_main31_3_Int, hbv_inv_main31_2_Int, hbv_inv_main31_4_Int, hhv_inv_main31_3_Int; [L0] havoc hbv_inv_main31_3_Int, hbv_inv_main31_4_Int, hbv_inv_main31_1_Int, hbv_inv_main31_2_Int; [L0] assume ((hhv_inv_main26_7_Int == hbv_inv_main26_2_Int + hbv_inv_main26_3_Int && hhv_inv_main26_5_Int == hbv_inv_main26_1_Int + 1) && hhv_inv_main26_6_Int == hbv_inv_main26_3_Int + 5) && 0 <= hhv_inv_main26_3_Int + -1 * hbv_inv_main26_1_Int + -1; [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_main26_0_Int, hhv_inv_main26_1_Int, hhv_inv_main26_2_Int, hhv_inv_main26_3_Int, hhv_inv_main26_4_Int, hbv_inv_main26_1_Int, hbv_inv_main26_3_Int, hbv_inv_main26_2_Int; [L0] havoc hbv_inv_main26_2_Int, hbv_inv_main26_3_Int, hbv_inv_main26_1_Int; [L0] assume ((((hhv_inv_main26_3_Int == hhv_inv_main26_0_Int && hhv_inv_main26_6_Int == 0) && hhv_inv_main26_7_Int == 0) && hhv_inv_main26_5_Int == 0) && hhv_inv_main26_4_Int == hhv_inv_main26_1_Int) && !(0 <= hbv_inv_main26_1_Int + -1 * hbv_inv_main26_2_Int + -1); [L0] hhv_inv_main12_0_Int, hhv_inv_main12_1_Int, hhv_inv_main12_2_Int, hhv_inv_main12_3_Int, hhv_inv_main12_4_Int, hhv_inv_main12_5_Int, hhv_inv_main12_6_Int := hhv_inv_main26_0_Int, hhv_inv_main26_1_Int, hbv_inv_main26_1_Int, hbv_inv_main26_3_Int, hbv_inv_main26_2_Int, hbv_inv_main26_4_Int, hhv_inv_main26_2_Int; [L0] havoc hbv_inv_main26_2_Int, hbv_inv_main26_3_Int, hbv_inv_main26_1_Int, hbv_inv_main26_4_Int; [L0] assume ((hhv_inv_main12_6_Int == hbv_inv_main12_2_Int + (5 * hbv_inv_main12_1_Int + hhv_inv_main12_3_Int) && hhv_inv_main12_4_Int == hbv_inv_main12_1_Int + 1) && 0 <= hhv_inv_main12_2_Int + -1 * hbv_inv_main12_1_Int + -1) && hhv_inv_main12_5_Int == 5 * hbv_inv_main12_1_Int + hhv_inv_main12_3_Int; [L0] hhv_inv_main12_0_Int, hhv_inv_main12_1_Int, hhv_inv_main12_2_Int, hhv_inv_main12_3_Int, hhv_inv_main12_4_Int, hhv_inv_main12_5_Int, hhv_inv_main12_6_Int := hhv_inv_main12_0_Int, hhv_inv_main12_1_Int, hhv_inv_main12_2_Int, hhv_inv_main12_3_Int, hbv_inv_main12_1_Int, hbv_inv_main12_3_Int, hbv_inv_main12_2_Int; [L0] havoc hbv_inv_main12_3_Int, hbv_inv_main12_2_Int, hbv_inv_main12_1_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, 7 locations, 1 error locations. UNSAFE Result, 1.4s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 16 SDtfs, 7 SDslu, 34 SDs, 0 SdLazy, 34 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 379 SizeOfPredicates, 6 NumberOfNonLiveVariables, 112 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 2/3 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/03_while_unsafe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_17-46-19-699.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/03_while_unsafe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_17-46-19-699.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/03_while_unsafe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_17-46-19-699.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/03_while_unsafe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_17-46-19-699.csv Received shutdown request...