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/barthe2-big_safe.c-1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 17:46:50,595 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 17:46:50,597 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 17:46:50,609 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 17:46:50,610 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 17:46:50,611 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 17:46:50,612 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 17:46:50,620 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 17:46:50,621 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 17:46:50,622 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 17:46:50,623 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 17:46:50,623 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 17:46:50,624 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 17:46:50,625 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 17:46:50,626 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 17:46:50,626 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 17:46:50,627 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 17:46:50,629 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 17:46:50,630 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 17:46:50,632 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 17:46:50,642 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 17:46:50,643 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 17:46:50,645 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 17:46:50,646 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 17:46:50,646 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 17:46:50,646 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 17:46:50,647 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 17:46:50,648 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 17:46:50,649 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 17:46:50,650 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 17:46:50,650 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 17:46:50,650 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 17:46:50,651 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 17:46:50,657 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 17:46:50,658 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 17:46:50,658 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 17:46:50,658 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 17:46:50,680 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 17:46:50,680 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 17:46:50,680 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 17:46:50,683 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 17:46:50,684 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 17:46:50,684 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 17:46:50,684 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 17:46:50,684 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 17:46:50,684 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 17:46:50,685 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 17:46:50,685 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 17:46:50,685 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 17:46:50,685 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 17:46:50,685 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 17:46:50,686 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 17:46:50,686 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 17:46:50,686 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 17:46:50,686 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 17:46:50,686 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 17:46:50,686 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 17:46:50,687 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 17:46:50,691 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 17:46:50,691 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 17:46:50,737 INFO ]: Repository-Root is: /tmp [2018-06-26 17:46:50,752 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 17:46:50,788 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 17:46:50,788 INFO ]: Initializing SmtParser... [2018-06-26 17:46:50,789 INFO ]: SmtParser initialized [2018-06-26 17:46:50,789 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/llreve/barthe2-big_safe.c-1.smt2 [2018-06-26 17:46:50,790 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 17:46:50,871 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/barthe2-big_safe.c-1.smt2 unknown [2018-06-26 17:46:51,107 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/barthe2-big_safe.c-1.smt2 [2018-06-26 17:46:51,110 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 17:46:51,116 INFO ]: Walking toolchain with 5 elements. [2018-06-26 17:46:51,116 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 17:46:51,116 INFO ]: Initializing ChcToBoogie... [2018-06-26 17:46:51,116 INFO ]: ChcToBoogie initialized [2018-06-26 17:46:51,120 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:46:51" (1/1) ... [2018-06-26 17:46:51,162 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:46:51 Unit [2018-06-26 17:46:51,205 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 17:46:51,206 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 17:46:51,206 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 17:46:51,206 INFO ]: Boogie Preprocessor initialized [2018-06-26 17:46:51,228 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:46:51" (1/1) ... [2018-06-26 17:46:51,228 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:46:51" (1/1) ... [2018-06-26 17:46:51,237 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:46:51" (1/1) ... [2018-06-26 17:46:51,237 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:46:51" (1/1) ... [2018-06-26 17:46:51,244 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:46:51" (1/1) ... [2018-06-26 17:46:51,246 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:46:51" (1/1) ... [2018-06-26 17:46:51,247 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:46:51" (1/1) ... [2018-06-26 17:46:51,256 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 17:46:51,257 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 17:46:51,257 INFO ]: Initializing RCFGBuilder... [2018-06-26 17:46:51,257 INFO ]: RCFGBuilder initialized [2018-06-26 17:46:51,258 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:46:51" (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 17:46:51,277 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 17:46:51,277 INFO ]: Found specification of procedure gotoProc [2018-06-26 17:46:51,277 INFO ]: Found implementation of procedure gotoProc [2018-06-26 17:46:51,277 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 17:46:51,277 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 17:46:51,277 INFO ]: Found implementation of procedure Ultimate.START [2018-06-26 17:46:51,670 INFO ]: Using library mode [2018-06-26 17:46:51,670 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:46:51 BoogieIcfgContainer [2018-06-26 17:46:51,670 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 17:46:51,671 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 17:46:51,671 INFO ]: Initializing BlockEncodingV2... [2018-06-26 17:46:51,672 INFO ]: BlockEncodingV2 initialized [2018-06-26 17:46:51,672 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:46:51" (1/1) ... [2018-06-26 17:46:51,687 INFO ]: Initial Icfg 15 locations, 18 edges [2018-06-26 17:46:51,688 INFO ]: Using Remove infeasible edges [2018-06-26 17:46:51,688 INFO ]: Using Maximize final states [2018-06-26 17:46:51,689 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 17:46:51,689 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 17:46:51,690 INFO ]: Using Remove sink states [2018-06-26 17:46:51,691 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 17:46:51,691 INFO ]: Using Use SBE [2018-06-26 17:46:51,709 INFO ]: SBE split 4 edges [2018-06-26 17:46:51,715 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-26 17:46:51,716 INFO ]: 0 new accepting states [2018-06-26 17:46:51,778 INFO ]: Removed 9 edges and 4 locations by large block encoding [2018-06-26 17:46:51,781 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:46:51,782 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 17:46:51,782 INFO ]: 0 new accepting states [2018-06-26 17:46:51,782 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 17:46:51,782 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:46:51,782 INFO ]: Encoded RCFG 9 locations, 16 edges [2018-06-26 17:46:51,783 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:46:51 BasicIcfg [2018-06-26 17:46:51,783 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 17:46:51,784 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 17:46:51,784 INFO ]: Initializing TraceAbstraction... [2018-06-26 17:46:51,787 INFO ]: TraceAbstraction initialized [2018-06-26 17:46:51,787 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:46:51" (1/4) ... [2018-06-26 17:46:51,789 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@399cd7e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 05:46:51, skipping insertion in model container [2018-06-26 17:46:51,789 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:46:51" (2/4) ... [2018-06-26 17:46:51,790 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@399cd7e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 05:46:51, skipping insertion in model container [2018-06-26 17:46:51,790 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:46:51" (3/4) ... [2018-06-26 17:46:51,790 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@399cd7e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:46:51, skipping insertion in model container [2018-06-26 17:46:51,790 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:46:51" (4/4) ... [2018-06-26 17:46:51,791 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 17:46:51,801 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 17:46:51,809 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 17:46:51,850 INFO ]: Using default assertion order modulation [2018-06-26 17:46:51,851 INFO ]: Interprodecural is true [2018-06-26 17:46:51,851 INFO ]: Hoare is false [2018-06-26 17:46:51,851 INFO ]: Compute interpolants for FPandBP [2018-06-26 17:46:51,851 INFO ]: Backedges is TWOTRACK [2018-06-26 17:46:51,851 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 17:46:51,851 INFO ]: Difference is false [2018-06-26 17:46:51,851 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 17:46:51,851 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 17:46:51,860 INFO ]: Start isEmpty. Operand 9 states. [2018-06-26 17:46:51,870 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-26 17:46:51,870 INFO ]: Found error trace [2018-06-26 17:46:51,871 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:46:51,871 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:46:51,876 INFO ]: Analyzing trace with hash -2087550306, now seen corresponding path program 1 times [2018-06-26 17:46:51,877 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:46:51,878 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:46:51,908 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:46:51,908 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:46:51,908 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:46:51,960 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:46:52,088 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:46:52,090 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:46:52,090 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-26 17:46:52,092 INFO ]: Interpolant automaton has 6 states [2018-06-26 17:46:52,103 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-26 17:46:52,103 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-26 17:46:52,106 INFO ]: Start difference. First operand 9 states. Second operand 6 states. [2018-06-26 17:46:52,554 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:46:52,554 INFO ]: Finished difference Result 22 states and 44 transitions. [2018-06-26 17:46:52,555 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-26 17:46:52,556 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-26 17:46:52,556 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:46:52,573 INFO ]: With dead ends: 22 [2018-06-26 17:46:52,573 INFO ]: Without dead ends: 22 [2018-06-26 17:46:52,575 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-06-26 17:46:52,602 INFO ]: Start minimizeSevpa. Operand 22 states. [2018-06-26 17:46:52,619 INFO ]: Finished minimizeSevpa. Reduced states from 22 to 13. [2018-06-26 17:46:52,620 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-26 17:46:52,620 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 26 transitions. [2018-06-26 17:46:52,621 INFO ]: Start accepts. Automaton has 13 states and 26 transitions. Word has length 8 [2018-06-26 17:46:52,621 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:46:52,621 INFO ]: Abstraction has 13 states and 26 transitions. [2018-06-26 17:46:52,621 INFO ]: Interpolant automaton has 6 states. [2018-06-26 17:46:52,621 INFO ]: Start isEmpty. Operand 13 states and 26 transitions. [2018-06-26 17:46:52,622 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-26 17:46:52,622 INFO ]: Found error trace [2018-06-26 17:46:52,622 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:46:52,622 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:46:52,622 INFO ]: Analyzing trace with hash -306339570, now seen corresponding path program 1 times [2018-06-26 17:46:52,622 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:46:52,622 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:46:52,623 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:46:52,623 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:46:52,623 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:46:52,640 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:46:52,917 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:46:53,022 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 17:46:53,022 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 17:46:53,028 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:46:53,057 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:46:53,064 INFO ]: Computing forward predicates... [2018-06-26 17:46:53,149 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:46:53,170 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 17:46:53,170 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-06-26 17:46:53,171 INFO ]: Interpolant automaton has 9 states [2018-06-26 17:46:53,171 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-26 17:46:53,171 INFO ]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-06-26 17:46:53,171 INFO ]: Start difference. First operand 13 states and 26 transitions. Second operand 9 states. [2018-06-26 17:46:53,802 WARN ]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-06-26 17:46:53,925 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:46:53,925 INFO ]: Finished difference Result 24 states and 48 transitions. [2018-06-26 17:46:53,926 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-26 17:46:53,926 INFO ]: Start accepts. Automaton has 9 states. Word has length 9 [2018-06-26 17:46:53,926 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:46:53,926 INFO ]: With dead ends: 24 [2018-06-26 17:46:53,926 INFO ]: Without dead ends: 24 [2018-06-26 17:46:53,927 INFO ]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2018-06-26 17:46:53,928 INFO ]: Start minimizeSevpa. Operand 24 states. [2018-06-26 17:46:53,930 INFO ]: Finished minimizeSevpa. Reduced states from 24 to 14. [2018-06-26 17:46:53,930 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-26 17:46:53,931 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 29 transitions. [2018-06-26 17:46:53,931 INFO ]: Start accepts. Automaton has 14 states and 29 transitions. Word has length 9 [2018-06-26 17:46:53,931 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:46:53,931 INFO ]: Abstraction has 14 states and 29 transitions. [2018-06-26 17:46:53,931 INFO ]: Interpolant automaton has 9 states. [2018-06-26 17:46:53,931 INFO ]: Start isEmpty. Operand 14 states and 29 transitions. [2018-06-26 17:46:53,931 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-26 17:46:53,931 INFO ]: Found error trace [2018-06-26 17:46:53,932 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:46:53,932 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:46:53,932 INFO ]: Analyzing trace with hash -290401385, now seen corresponding path program 1 times [2018-06-26 17:46:53,932 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:46:53,932 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:46:53,933 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:46:53,933 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:46:53,933 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:46:53,944 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:46:53,981 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:46:53,981 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 17:46:53,981 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-26 17:46:53,994 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:46:54,023 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:46:54,025 INFO ]: Computing forward predicates... [2018-06-26 17:46:54,039 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:46:54,062 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 17:46:54,062 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-26 17:46:54,062 INFO ]: Interpolant automaton has 6 states [2018-06-26 17:46:54,062 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-26 17:46:54,062 INFO ]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-06-26 17:46:54,063 INFO ]: Start difference. First operand 14 states and 29 transitions. Second operand 6 states. [2018-06-26 17:46:54,114 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:46:54,115 INFO ]: Finished difference Result 20 states and 40 transitions. [2018-06-26 17:46:54,115 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-26 17:46:54,115 INFO ]: Start accepts. Automaton has 6 states. Word has length 9 [2018-06-26 17:46:54,115 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:46:54,116 INFO ]: With dead ends: 20 [2018-06-26 17:46:54,116 INFO ]: Without dead ends: 18 [2018-06-26 17:46:54,117 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-06-26 17:46:54,117 INFO ]: Start minimizeSevpa. Operand 18 states. [2018-06-26 17:46:54,120 INFO ]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-06-26 17:46:54,120 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-26 17:46:54,121 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 34 transitions. [2018-06-26 17:46:54,121 INFO ]: Start accepts. Automaton has 17 states and 34 transitions. Word has length 9 [2018-06-26 17:46:54,121 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:46:54,121 INFO ]: Abstraction has 17 states and 34 transitions. [2018-06-26 17:46:54,121 INFO ]: Interpolant automaton has 6 states. [2018-06-26 17:46:54,121 INFO ]: Start isEmpty. Operand 17 states and 34 transitions. [2018-06-26 17:46:54,121 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-26 17:46:54,121 INFO ]: Found error trace [2018-06-26 17:46:54,121 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:46:54,121 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:46:54,121 INFO ]: Analyzing trace with hash -261772234, now seen corresponding path program 1 times [2018-06-26 17:46:54,121 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:46:54,121 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:46:54,122 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:46:54,122 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:46:54,122 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:46:54,131 INFO ]: Conjunction of SSA is sat [2018-06-26 17:46:54,132 INFO ]: Counterexample might be feasible [2018-06-26 17:46:54,145 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 17:46:54,146 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:46:54 BasicIcfg [2018-06-26 17:46:54,146 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 17:46:54,147 INFO ]: Toolchain (without parser) took 3036.15 ms. Allocated memory was 304.6 MB in the beginning and 324.5 MB in the end (delta: 19.9 MB). Free memory was 260.1 MB in the beginning and 252.4 MB in the end (delta: 7.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 3.6 GB. [2018-06-26 17:46:54,148 INFO ]: SmtParser took 0.05 ms. Allocated memory is still 304.6 MB. Free memory is still 270.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 17:46:54,148 INFO ]: ChcToBoogie took 89.39 ms. Allocated memory is still 304.6 MB. Free memory was 259.1 MB in the beginning and 257.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:46:54,149 INFO ]: Boogie Preprocessor took 50.18 ms. Allocated memory is still 304.6 MB. Free memory was 257.1 MB in the beginning and 256.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-26 17:46:54,149 INFO ]: RCFGBuilder took 413.66 ms. Allocated memory is still 304.6 MB. Free memory was 256.1 MB in the beginning and 246.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:46:54,155 INFO ]: BlockEncodingV2 took 112.15 ms. Allocated memory is still 304.6 MB. Free memory was 246.1 MB in the beginning and 242.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:46:54,155 INFO ]: TraceAbstraction took 2361.98 ms. Allocated memory was 304.6 MB in the beginning and 324.5 MB in the end (delta: 19.9 MB). Free memory was 242.1 MB in the beginning and 252.4 MB in the end (delta: -10.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 3.6 GB. [2018-06-26 17:46:54,161 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 15 locations, 18 edges - StatisticsResult: Encoded RCFG 9 locations, 16 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.05 ms. Allocated memory is still 304.6 MB. Free memory is still 270.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 89.39 ms. Allocated memory is still 304.6 MB. Free memory was 259.1 MB in the beginning and 257.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 50.18 ms. Allocated memory is still 304.6 MB. Free memory was 257.1 MB in the beginning and 256.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 413.66 ms. Allocated memory is still 304.6 MB. Free memory was 256.1 MB in the beginning and 246.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 112.15 ms. Allocated memory is still 304.6 MB. Free memory was 246.1 MB in the beginning and 242.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2361.98 ms. Allocated memory was 304.6 MB in the beginning and 324.5 MB in the end (delta: 19.9 MB). Free memory was 242.1 MB in the beginning and 252.4 MB in the end (delta: -10.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [UNKNOWN] : assertion can be violated assertion can be violated We found a FailurePath: [L0] CALL call gotoProc(0, 0, 0, 0, 0, 0); [L0] assume !(0 <= hbv_inv_main37_1_Int + -1 * hbv_inv_main37_2_Int && !(hbv_inv_main37_3_Int == 0)); [L0] hhv_inv_main31_0_Int, hhv_inv_main31_1_Int, hhv_inv_main31_2_Int, hhv_inv_main31_3_Int, hhv_inv_main31_4_Int := hhv_inv_main37_0_Int, hhv_inv_main37_1_Int, hbv_inv_main37_1_Int, hbv_inv_main37_2_Int, hhv_inv_main37_2_Int; [L0] havoc hbv_inv_main37_2_Int, hbv_inv_main37_3_Int, hbv_inv_main37_1_Int; [L0] assume !(!(hbv_inv_main31_2_Int == 0) && 0 <= hhv_inv_main31_2_Int + -1 * hbv_inv_main31_1_Int) && hhv_inv_main31_3_Int == 1; [L0] hhv_inv_main25_0_Int, hhv_inv_main25_1_Int, hhv_inv_main25_2_Int, hhv_inv_main25_3_Int, hhv_inv_main25_4_Int := hhv_inv_main31_0_Int, hhv_inv_main31_1_Int, hhv_inv_main31_2_Int, hbv_inv_main31_1_Int, hhv_inv_main31_4_Int; [L0] havoc hbv_inv_main31_1_Int, hbv_inv_main31_2_Int; [L0] assume ((hhv_inv_main25_3_Int == 1 && hhv_inv_main25_2_Int == hhv_inv_main25_0_Int) && hhv_inv_main25_4_Int == 1) && !(0 <= hbv_inv_main25_1_Int + -1 * hbv_inv_main25_2_Int && !(hbv_inv_main25_3_Int == 0)); [L0] hhv_inv_main14_0_Int, hhv_inv_main14_1_Int, hhv_inv_main14_2_Int, hhv_inv_main14_3_Int := hhv_inv_main25_0_Int, hbv_inv_main25_1_Int, hbv_inv_main25_2_Int, hhv_inv_main25_1_Int; [L0] havoc hbv_inv_main25_3_Int, hbv_inv_main25_1_Int, hbv_inv_main25_2_Int; [L0] assume !(0 <= hhv_inv_main14_1_Int + -1 * hbv_inv_main14_1_Int && !(hbv_inv_main14_2_Int == 0)) && hhv_inv_main14_2_Int == 0; [L0] hhv_inv_main8_0_Int, hhv_inv_main8_1_Int, hhv_inv_main8_2_Int, hhv_inv_main8_3_Int := hhv_inv_main14_0_Int, hhv_inv_main14_1_Int, hbv_inv_main14_1_Int, hhv_inv_main14_3_Int; [L0] havoc hbv_inv_main14_2_Int, hbv_inv_main14_1_Int; [L0] assume ((0 <= hhv_inv_main8_1_Int + -1 * hbv_inv_main8_3_Int && !(hbv_inv_main8_1_Int == 0)) && hhv_inv_main8_2_Int == hbv_inv_main8_3_Int + 1) && hhv_inv_main8_3_Int == 5 * hbv_inv_main8_2_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_0_Int, hhv_inv_main8_1_Int, hbv_inv_main8_3_Int, hbv_inv_main8_2_Int; [L0] havoc hbv_inv_main8_2_Int, hbv_inv_main8_3_Int, hbv_inv_main8_1_Int; [L0] RET call gotoProc(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, 2.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 85 SDslu, 125 SDs, 0 SdLazy, 151 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 20 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 1069 SizeOfPredicates, 12 NumberOfNonLiveVariables, 204 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 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/barthe2-big_safe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_17-46-54-175.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/barthe2-big_safe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_17-46-54-175.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/barthe2-big_safe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_17-46-54-175.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/barthe2-big_safe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_17-46-54-175.csv Received shutdown request...