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/HOLA/12.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 20:39:36,766 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 20:39:36,767 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 20:39:36,778 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 20:39:36,779 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 20:39:36,780 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 20:39:36,781 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 20:39:36,785 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 20:39:36,786 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 20:39:36,787 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 20:39:36,788 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 20:39:36,788 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 20:39:36,789 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 20:39:36,792 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 20:39:36,793 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 20:39:36,794 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 20:39:36,796 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 20:39:36,808 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 20:39:36,809 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 20:39:36,810 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 20:39:36,811 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 20:39:36,813 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 20:39:36,813 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 20:39:36,813 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 20:39:36,814 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 20:39:36,820 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 20:39:36,820 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 20:39:36,821 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 20:39:36,822 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 20:39:36,822 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 20:39:36,827 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 20:39:36,828 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 20:39:36,828 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 20:39:36,829 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 20:39:36,830 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 20:39:36,830 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 20:39:36,845 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 20:39:36,846 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 20:39:36,846 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 20:39:36,846 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 20:39:36,847 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 20:39:36,847 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 20:39:36,847 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 20:39:36,848 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 20:39:36,848 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 20:39:36,848 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 20:39:36,848 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 20:39:36,848 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 20:39:36,849 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 20:39:36,849 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 20:39:36,849 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 20:39:36,849 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 20:39:36,849 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 20:39:36,850 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 20:39:36,850 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 20:39:36,850 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 20:39:36,850 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 20:39:36,851 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 20:39:36,853 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 20:39:36,908 INFO ]: Repository-Root is: /tmp [2018-06-24 20:39:36,925 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 20:39:36,931 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 20:39:36,933 INFO ]: Initializing SmtParser... [2018-06-24 20:39:36,933 INFO ]: SmtParser initialized [2018-06-24 20:39:36,934 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/12.c.smt2 [2018-06-24 20:39:36,935 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-24 20:39:37,025 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/12.c.smt2 unknown [2018-06-24 20:39:37,889 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/12.c.smt2 [2018-06-24 20:39:37,893 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 20:39:37,900 INFO ]: Walking toolchain with 5 elements. [2018-06-24 20:39:37,900 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 20:39:37,900 INFO ]: Initializing ChcToBoogie... [2018-06-24 20:39:37,900 INFO ]: ChcToBoogie initialized [2018-06-24 20:39:37,903 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:39:37" (1/1) ... [2018-06-24 20:39:38,044 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:38 Unit [2018-06-24 20:39:38,044 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 20:39:38,044 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 20:39:38,044 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 20:39:38,045 INFO ]: Boogie Preprocessor initialized [2018-06-24 20:39:38,064 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:38" (1/1) ... [2018-06-24 20:39:38,064 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:38" (1/1) ... [2018-06-24 20:39:38,075 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:38" (1/1) ... [2018-06-24 20:39:38,076 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:38" (1/1) ... [2018-06-24 20:39:38,094 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:38" (1/1) ... [2018-06-24 20:39:38,096 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:38" (1/1) ... [2018-06-24 20:39:38,100 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:38" (1/1) ... [2018-06-24 20:39:38,108 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 20:39:38,108 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 20:39:38,109 INFO ]: Initializing RCFGBuilder... [2018-06-24 20:39:38,109 INFO ]: RCFGBuilder initialized [2018-06-24 20:39:38,109 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:38" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-24 20:39:38,124 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 20:39:38,124 INFO ]: Found specification of procedure gotoProc [2018-06-24 20:39:38,124 INFO ]: Found implementation of procedure gotoProc [2018-06-24 20:39:38,124 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 20:39:38,124 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 20:39:38,124 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 20:39:39,375 INFO ]: Using library mode [2018-06-24 20:39:39,376 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:39:39 BoogieIcfgContainer [2018-06-24 20:39:39,376 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 20:39:39,376 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 20:39:39,376 INFO ]: Initializing BlockEncodingV2... [2018-06-24 20:39:39,378 INFO ]: BlockEncodingV2 initialized [2018-06-24 20:39:39,379 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:39:39" (1/1) ... [2018-06-24 20:39:39,406 INFO ]: Initial Icfg 53 locations, 61 edges [2018-06-24 20:39:39,407 INFO ]: Using Remove infeasible edges [2018-06-24 20:39:39,408 INFO ]: Using Maximize final states [2018-06-24 20:39:39,408 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 20:39:39,408 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 20:39:39,410 INFO ]: Using Remove sink states [2018-06-24 20:39:39,413 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 20:39:39,413 INFO ]: Using Use SBE [2018-06-24 20:39:39,432 INFO ]: SBE split 0 edges [2018-06-24 20:39:39,442 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-24 20:39:39,444 INFO ]: 0 new accepting states [2018-06-24 20:39:41,325 INFO ]: Removed 116 edges and 43 locations by large block encoding [2018-06-24 20:39:41,327 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 20:39:41,332 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 20:39:41,332 INFO ]: 0 new accepting states [2018-06-24 20:39:41,332 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 20:39:41,332 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 20:39:41,332 INFO ]: Encoded RCFG 8 locations, 16 edges [2018-06-24 20:39:41,333 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:39:41 BasicIcfg [2018-06-24 20:39:41,333 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 20:39:41,337 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 20:39:41,337 INFO ]: Initializing TraceAbstraction... [2018-06-24 20:39:41,339 INFO ]: TraceAbstraction initialized [2018-06-24 20:39:41,340 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:39:37" (1/4) ... [2018-06-24 20:39:41,341 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9a32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 08:39:41, skipping insertion in model container [2018-06-24 20:39:41,341 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:38" (2/4) ... [2018-06-24 20:39:41,342 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9a32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 08:39:41, skipping insertion in model container [2018-06-24 20:39:41,342 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:39:39" (3/4) ... [2018-06-24 20:39:41,342 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9a32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:39:41, skipping insertion in model container [2018-06-24 20:39:41,342 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:39:41" (4/4) ... [2018-06-24 20:39:41,343 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 20:39:41,353 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 20:39:41,361 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 20:39:41,401 INFO ]: Using default assertion order modulation [2018-06-24 20:39:41,402 INFO ]: Interprodecural is true [2018-06-24 20:39:41,402 INFO ]: Hoare is false [2018-06-24 20:39:41,402 INFO ]: Compute interpolants for FPandBP [2018-06-24 20:39:41,402 INFO ]: Backedges is TWOTRACK [2018-06-24 20:39:41,402 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 20:39:41,402 INFO ]: Difference is false [2018-06-24 20:39:41,402 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 20:39:41,402 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 20:39:41,411 INFO ]: Start isEmpty. Operand 8 states. [2018-06-24 20:39:41,419 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 20:39:41,419 INFO ]: Found error trace [2018-06-24 20:39:41,420 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 20:39:41,420 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:39:41,425 INFO ]: Analyzing trace with hash 1955998224, now seen corresponding path program 1 times [2018-06-24 20:39:41,426 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:39:41,427 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:39:41,467 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:41,467 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:39:41,468 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:41,660 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:41,874 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:39:41,876 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:39:41,876 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 20:39:41,877 INFO ]: Interpolant automaton has 3 states [2018-06-24 20:39:41,891 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 20:39:41,892 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:39:41,894 INFO ]: Start difference. First operand 8 states. Second operand 3 states. [2018-06-24 20:39:42,113 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:39:42,114 INFO ]: Finished difference Result 12 states and 28 transitions. [2018-06-24 20:39:42,115 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 20:39:42,116 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-24 20:39:42,116 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:39:42,130 INFO ]: With dead ends: 12 [2018-06-24 20:39:42,130 INFO ]: Without dead ends: 12 [2018-06-24 20:39:42,132 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:39:42,149 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-24 20:39:42,180 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 9. [2018-06-24 20:39:42,181 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-24 20:39:42,186 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 21 transitions. [2018-06-24 20:39:42,187 INFO ]: Start accepts. Automaton has 9 states and 21 transitions. Word has length 6 [2018-06-24 20:39:42,188 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:39:42,188 INFO ]: Abstraction has 9 states and 21 transitions. [2018-06-24 20:39:42,188 INFO ]: Interpolant automaton has 3 states. [2018-06-24 20:39:42,188 INFO ]: Start isEmpty. Operand 9 states and 21 transitions. [2018-06-24 20:39:42,188 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 20:39:42,188 INFO ]: Found error trace [2018-06-24 20:39:42,188 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 20:39:42,189 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:39:42,190 INFO ]: Analyzing trace with hash 1956028015, now seen corresponding path program 1 times [2018-06-24 20:39:42,190 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:39:42,190 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:39:42,190 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:42,191 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:39:42,191 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:42,260 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:42,375 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:39:42,376 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:39:42,376 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 20:39:42,377 INFO ]: Interpolant automaton has 3 states [2018-06-24 20:39:42,377 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 20:39:42,377 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:39:42,377 INFO ]: Start difference. First operand 9 states and 21 transitions. Second operand 3 states. [2018-06-24 20:39:42,523 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:39:42,523 INFO ]: Finished difference Result 9 states and 19 transitions. [2018-06-24 20:39:42,525 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 20:39:42,525 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-24 20:39:42,525 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:39:42,525 INFO ]: With dead ends: 9 [2018-06-24 20:39:42,525 INFO ]: Without dead ends: 9 [2018-06-24 20:39:42,526 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:39:42,526 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-24 20:39:42,527 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-24 20:39:42,527 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-24 20:39:42,528 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 19 transitions. [2018-06-24 20:39:42,528 INFO ]: Start accepts. Automaton has 9 states and 19 transitions. Word has length 6 [2018-06-24 20:39:42,528 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:39:42,528 INFO ]: Abstraction has 9 states and 19 transitions. [2018-06-24 20:39:42,528 INFO ]: Interpolant automaton has 3 states. [2018-06-24 20:39:42,528 INFO ]: Start isEmpty. Operand 9 states and 19 transitions. [2018-06-24 20:39:42,528 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-24 20:39:42,528 INFO ]: Found error trace [2018-06-24 20:39:42,528 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:39:42,528 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:39:42,528 INFO ]: Analyzing trace with hash 470039580, now seen corresponding path program 1 times [2018-06-24 20:39:42,528 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:39:42,529 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:39:42,530 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:42,530 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:39:42,530 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:42,570 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:42,792 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:39:42,793 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 20:39:42,793 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) [2018-06-24 20:39:42,811 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 20:39:43,021 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:43,034 INFO ]: Computing forward predicates... [2018-06-24 20:39:43,164 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:39:43,200 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 20:39:43,200 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-24 20:39:43,201 INFO ]: Interpolant automaton has 5 states [2018-06-24 20:39:43,201 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 20:39:43,201 INFO ]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-06-24 20:39:43,201 INFO ]: Start difference. First operand 9 states and 19 transitions. Second operand 5 states. [2018-06-24 20:39:43,522 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:39:43,522 INFO ]: Finished difference Result 11 states and 25 transitions. [2018-06-24 20:39:43,523 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 20:39:43,523 INFO ]: Start accepts. Automaton has 5 states. Word has length 7 [2018-06-24 20:39:43,523 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:39:43,523 INFO ]: With dead ends: 11 [2018-06-24 20:39:43,523 INFO ]: Without dead ends: 11 [2018-06-24 20:39:43,524 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-06-24 20:39:43,524 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-24 20:39:43,525 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-24 20:39:43,525 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-24 20:39:43,526 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 25 transitions. [2018-06-24 20:39:43,526 INFO ]: Start accepts. Automaton has 11 states and 25 transitions. Word has length 7 [2018-06-24 20:39:43,526 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:39:43,526 INFO ]: Abstraction has 11 states and 25 transitions. [2018-06-24 20:39:43,526 INFO ]: Interpolant automaton has 5 states. [2018-06-24 20:39:43,526 INFO ]: Start isEmpty. Operand 11 states and 25 transitions. [2018-06-24 20:39:43,527 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-24 20:39:43,527 INFO ]: Found error trace [2018-06-24 20:39:43,527 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2018-06-24 20:39:43,527 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:39:43,527 INFO ]: Analyzing trace with hash -427152740, now seen corresponding path program 2 times [2018-06-24 20:39:43,527 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:39:43,527 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:39:43,528 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:43,528 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:39:43,528 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:43,573 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:43,695 INFO ]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 20:39:43,695 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 20:39:43,695 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 [2018-06-24 20:39:43,702 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-24 20:39:44,012 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-24 20:39:44,012 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:44,021 INFO ]: Computing forward predicates... [2018-06-24 20:39:44,079 INFO ]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 20:39:44,115 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 20:39:44,115 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-24 20:39:44,116 INFO ]: Interpolant automaton has 6 states [2018-06-24 20:39:44,116 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-24 20:39:44,116 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-24 20:39:44,116 INFO ]: Start difference. First operand 11 states and 25 transitions. Second operand 6 states. [2018-06-24 20:39:44,255 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:39:44,255 INFO ]: Finished difference Result 11 states and 24 transitions. [2018-06-24 20:39:44,255 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-24 20:39:44,256 INFO ]: Start accepts. Automaton has 6 states. Word has length 9 [2018-06-24 20:39:44,256 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:39:44,256 INFO ]: With dead ends: 11 [2018-06-24 20:39:44,256 INFO ]: Without dead ends: 11 [2018-06-24 20:39:44,256 INFO ]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-06-24 20:39:44,256 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-24 20:39:44,258 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-24 20:39:44,258 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-24 20:39:44,258 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 24 transitions. [2018-06-24 20:39:44,258 INFO ]: Start accepts. Automaton has 11 states and 24 transitions. Word has length 9 [2018-06-24 20:39:44,258 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:39:44,258 INFO ]: Abstraction has 11 states and 24 transitions. [2018-06-24 20:39:44,259 INFO ]: Interpolant automaton has 6 states. [2018-06-24 20:39:44,259 INFO ]: Start isEmpty. Operand 11 states and 24 transitions. [2018-06-24 20:39:44,259 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-24 20:39:44,259 INFO ]: Found error trace [2018-06-24 20:39:44,259 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2018-06-24 20:39:44,259 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:39:44,259 INFO ]: Analyzing trace with hash -427122949, now seen corresponding path program 1 times [2018-06-24 20:39:44,259 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:39:44,259 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:39:44,260 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:44,260 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 20:39:44,260 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:44,300 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:44,607 INFO ]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:39:44,607 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 20:39:44,607 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 20:39:44,614 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:39:44,853 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:44,862 INFO ]: Computing forward predicates... [2018-06-24 20:39:45,199 INFO ]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:39:45,234 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 20:39:45,234 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2018-06-24 20:39:45,235 INFO ]: Interpolant automaton has 8 states [2018-06-24 20:39:45,235 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-24 20:39:45,235 INFO ]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-06-24 20:39:45,235 INFO ]: Start difference. First operand 11 states and 24 transitions. Second operand 8 states. [2018-06-24 20:39:45,614 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:39:45,614 INFO ]: Finished difference Result 22 states and 56 transitions. [2018-06-24 20:39:45,614 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-24 20:39:45,614 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-24 20:39:45,614 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:39:45,615 INFO ]: With dead ends: 22 [2018-06-24 20:39:45,615 INFO ]: Without dead ends: 22 [2018-06-24 20:39:45,615 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-06-24 20:39:45,615 INFO ]: Start minimizeSevpa. Operand 22 states. [2018-06-24 20:39:45,618 INFO ]: Finished minimizeSevpa. Reduced states from 22 to 15. [2018-06-24 20:39:45,618 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-24 20:39:45,618 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 40 transitions. [2018-06-24 20:39:45,618 INFO ]: Start accepts. Automaton has 15 states and 40 transitions. Word has length 9 [2018-06-24 20:39:45,618 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:39:45,618 INFO ]: Abstraction has 15 states and 40 transitions. [2018-06-24 20:39:45,618 INFO ]: Interpolant automaton has 8 states. [2018-06-24 20:39:45,618 INFO ]: Start isEmpty. Operand 15 states and 40 transitions. [2018-06-24 20:39:45,619 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-24 20:39:45,619 INFO ]: Found error trace [2018-06-24 20:39:45,619 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:39:45,619 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:39:45,619 INFO ]: Analyzing trace with hash -426199428, now seen corresponding path program 1 times [2018-06-24 20:39:45,619 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:39:45,619 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:39:45,620 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:45,620 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:39:45,620 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:45,654 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:45,742 INFO ]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 20:39:45,742 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:39:45,743 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 20:39:45,743 INFO ]: Interpolant automaton has 3 states [2018-06-24 20:39:45,743 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 20:39:45,743 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:39:45,743 INFO ]: Start difference. First operand 15 states and 40 transitions. Second operand 3 states. [2018-06-24 20:39:45,840 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:39:45,840 INFO ]: Finished difference Result 19 states and 42 transitions. [2018-06-24 20:39:45,841 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 20:39:45,841 INFO ]: Start accepts. Automaton has 3 states. Word has length 9 [2018-06-24 20:39:45,841 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:39:45,841 INFO ]: With dead ends: 19 [2018-06-24 20:39:45,842 INFO ]: Without dead ends: 19 [2018-06-24 20:39:45,842 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:39:45,842 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-24 20:39:45,844 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 16. [2018-06-24 20:39:45,844 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-24 20:39:45,844 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 35 transitions. [2018-06-24 20:39:45,844 INFO ]: Start accepts. Automaton has 16 states and 35 transitions. Word has length 9 [2018-06-24 20:39:45,844 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:39:45,844 INFO ]: Abstraction has 16 states and 35 transitions. [2018-06-24 20:39:45,844 INFO ]: Interpolant automaton has 3 states. [2018-06-24 20:39:45,844 INFO ]: Start isEmpty. Operand 16 states and 35 transitions. [2018-06-24 20:39:45,845 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-24 20:39:45,845 INFO ]: Found error trace [2018-06-24 20:39:45,846 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:39:45,846 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:39:45,846 INFO ]: Analyzing trace with hash 489009883, now seen corresponding path program 2 times [2018-06-24 20:39:45,846 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:39:45,846 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:39:45,846 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:45,846 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:39:45,846 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:45,877 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:45,995 INFO ]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 20:39:45,995 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:39:45,995 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 20:39:45,996 INFO ]: Interpolant automaton has 3 states [2018-06-24 20:39:45,996 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 20:39:45,996 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:39:45,996 INFO ]: Start difference. First operand 16 states and 35 transitions. Second operand 3 states. [2018-06-24 20:39:46,030 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:39:46,030 INFO ]: Finished difference Result 18 states and 36 transitions. [2018-06-24 20:39:46,030 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 20:39:46,030 INFO ]: Start accepts. Automaton has 3 states. Word has length 9 [2018-06-24 20:39:46,030 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:39:46,031 INFO ]: With dead ends: 18 [2018-06-24 20:39:46,031 INFO ]: Without dead ends: 18 [2018-06-24 20:39:46,031 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:39:46,031 INFO ]: Start minimizeSevpa. Operand 18 states. [2018-06-24 20:39:46,033 INFO ]: Finished minimizeSevpa. Reduced states from 18 to 15. [2018-06-24 20:39:46,033 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-24 20:39:46,033 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 29 transitions. [2018-06-24 20:39:46,034 INFO ]: Start accepts. Automaton has 15 states and 29 transitions. Word has length 9 [2018-06-24 20:39:46,034 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:39:46,034 INFO ]: Abstraction has 15 states and 29 transitions. [2018-06-24 20:39:46,034 INFO ]: Interpolant automaton has 3 states. [2018-06-24 20:39:46,034 INFO ]: Start isEmpty. Operand 15 states and 29 transitions. [2018-06-24 20:39:46,034 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-24 20:39:46,034 INFO ]: Found error trace [2018-06-24 20:39:46,034 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2018-06-24 20:39:46,034 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:39:46,034 INFO ]: Analyzing trace with hash 489933404, now seen corresponding path program 1 times [2018-06-24 20:39:46,034 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:39:46,034 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:39:46,035 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:46,035 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 20:39:46,035 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:46,089 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:46,309 INFO ]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 20:39:46,309 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 20:39:46,309 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 20:39:46,315 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:39:46,554 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:46,563 INFO ]: Computing forward predicates... [2018-06-24 20:39:46,705 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:39:46,726 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 20:39:46,726 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2018-06-24 20:39:46,726 INFO ]: Interpolant automaton has 8 states [2018-06-24 20:39:46,726 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-24 20:39:46,726 INFO ]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-06-24 20:39:46,726 INFO ]: Start difference. First operand 15 states and 29 transitions. Second operand 8 states. [2018-06-24 20:39:46,937 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:39:46,937 INFO ]: Finished difference Result 21 states and 43 transitions. [2018-06-24 20:39:46,937 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-24 20:39:46,937 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-24 20:39:46,937 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:39:46,938 INFO ]: With dead ends: 21 [2018-06-24 20:39:46,938 INFO ]: Without dead ends: 21 [2018-06-24 20:39:46,938 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-06-24 20:39:46,938 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-24 20:39:46,940 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 16. [2018-06-24 20:39:46,940 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-24 20:39:46,941 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 31 transitions. [2018-06-24 20:39:46,941 INFO ]: Start accepts. Automaton has 16 states and 31 transitions. Word has length 9 [2018-06-24 20:39:46,941 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:39:46,941 INFO ]: Abstraction has 16 states and 31 transitions. [2018-06-24 20:39:46,941 INFO ]: Interpolant automaton has 8 states. [2018-06-24 20:39:46,941 INFO ]: Start isEmpty. Operand 16 states and 31 transitions. [2018-06-24 20:39:46,941 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-24 20:39:46,941 INFO ]: Found error trace [2018-06-24 20:39:46,941 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:39:46,941 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:39:46,941 INFO ]: Analyzing trace with hash 1849962178, now seen corresponding path program 1 times [2018-06-24 20:39:46,941 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:39:46,941 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:39:46,943 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:46,943 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:39:46,943 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:46,986 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:47,177 INFO ]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-24 20:39:47,177 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:39:47,178 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-24 20:39:47,178 INFO ]: Interpolant automaton has 4 states [2018-06-24 20:39:47,178 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-24 20:39:47,178 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-24 20:39:47,178 INFO ]: Start difference. First operand 16 states and 31 transitions. Second operand 4 states. [2018-06-24 20:39:47,235 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:39:47,235 INFO ]: Finished difference Result 12 states and 23 transitions. [2018-06-24 20:39:47,236 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-24 20:39:47,236 INFO ]: Start accepts. Automaton has 4 states. Word has length 11 [2018-06-24 20:39:47,236 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:39:47,236 INFO ]: With dead ends: 12 [2018-06-24 20:39:47,236 INFO ]: Without dead ends: 0 [2018-06-24 20:39:47,236 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-24 20:39:47,236 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 20:39:47,236 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 20:39:47,236 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 20:39:47,236 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 20:39:47,236 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2018-06-24 20:39:47,236 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:39:47,236 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 20:39:47,236 INFO ]: Interpolant automaton has 4 states. [2018-06-24 20:39:47,236 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 20:39:47,236 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 20:39:47,238 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 20:39:47,240 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:39:47 BasicIcfg [2018-06-24 20:39:47,240 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 20:39:47,241 INFO ]: Toolchain (without parser) took 9347.35 ms. Allocated memory was 309.3 MB in the beginning and 471.3 MB in the end (delta: 162.0 MB). Free memory was 216.1 MB in the beginning and 254.6 MB in the end (delta: -38.5 MB). Peak memory consumption was 123.5 MB. Max. memory is 3.6 GB. [2018-06-24 20:39:47,243 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 20:39:47,243 INFO ]: ChcToBoogie took 143.93 ms. Allocated memory is still 309.3 MB. Free memory was 216.1 MB in the beginning and 212.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:39:47,244 INFO ]: Boogie Preprocessor took 63.51 ms. Allocated memory is still 309.3 MB. Free memory was 212.1 MB in the beginning and 210.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:39:47,244 INFO ]: RCFGBuilder took 1267.24 ms. Allocated memory was 309.3 MB in the beginning and 330.3 MB in the end (delta: 21.0 MB). Free memory was 210.1 MB in the beginning and 230.7 MB in the end (delta: -20.6 MB). Peak memory consumption was 27.1 MB. Max. memory is 3.6 GB. [2018-06-24 20:39:47,245 INFO ]: BlockEncodingV2 took 1956.62 ms. Allocated memory was 330.3 MB in the beginning and 393.2 MB in the end (delta: 62.9 MB). Free memory was 230.7 MB in the beginning and 345.6 MB in the end (delta: -114.9 MB). Peak memory consumption was 102.5 MB. Max. memory is 3.6 GB. [2018-06-24 20:39:47,245 INFO ]: TraceAbstraction took 5903.96 ms. Allocated memory was 393.2 MB in the beginning and 471.3 MB in the end (delta: 78.1 MB). Free memory was 345.6 MB in the beginning and 254.6 MB in the end (delta: 91.1 MB). Peak memory consumption was 169.2 MB. Max. memory is 3.6 GB. [2018-06-24 20:39:47,258 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 53 locations, 61 edges - StatisticsResult: Encoded RCFG 8 locations, 16 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 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 143.93 ms. Allocated memory is still 309.3 MB. Free memory was 216.1 MB in the beginning and 212.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 63.51 ms. Allocated memory is still 309.3 MB. Free memory was 212.1 MB in the beginning and 210.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 1267.24 ms. Allocated memory was 309.3 MB in the beginning and 330.3 MB in the end (delta: 21.0 MB). Free memory was 210.1 MB in the beginning and 230.7 MB in the end (delta: -20.6 MB). Peak memory consumption was 27.1 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 1956.62 ms. Allocated memory was 330.3 MB in the beginning and 393.2 MB in the end (delta: 62.9 MB). Free memory was 230.7 MB in the beginning and 345.6 MB in the end (delta: -114.9 MB). Peak memory consumption was 102.5 MB. Max. memory is 3.6 GB. * TraceAbstraction took 5903.96 ms. Allocated memory was 393.2 MB in the beginning and 471.3 MB in the end (delta: 78.1 MB). Free memory was 345.6 MB in the beginning and 254.6 MB in the end (delta: 91.1 MB). Peak memory consumption was 169.2 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 8 locations, 1 error locations. SAFE Result, 5.8s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 1.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 112 SDtfs, 115 SDslu, 134 SDs, 0 SdLazy, 185 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=6, 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, 9 MinimizatonAttempts, 21 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 96 ConstructedInterpolants, 1 QuantifiedInterpolants, 1601 SizeOfPredicates, 152 NumberOfNonLiveVariables, 7521 ConjunctsInSsa, 174 ConjunctsInUnsatCore, 13 InterpolantComputations, 6 PerfectInterpolantSequences, 40/57 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/12.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_20-39-47-267.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/12.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_20-39-47-267.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/12.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_20-39-47-267.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/12.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_20-39-47-267.csv Received shutdown request...