java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/Consistency/graham-scan-full.33.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 10:39:38,438 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 10:39:38,441 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 10:39:38,457 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 10:39:38,457 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 10:39:38,458 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 10:39:38,459 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 10:39:38,463 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 10:39:38,464 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 10:39:38,466 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 10:39:38,467 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 10:39:38,467 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 10:39:38,468 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 10:39:38,472 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 10:39:38,473 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 10:39:38,473 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 10:39:38,486 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 10:39:38,488 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 10:39:38,489 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 10:39:38,490 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 10:39:38,491 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 10:39:38,496 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 10:39:38,496 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 10:39:38,496 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 10:39:38,497 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 10:39:38,498 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 10:39:38,499 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 10:39:38,499 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 10:39:38,500 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 10:39:38,501 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 10:39:38,501 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 10:39:38,502 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 10:39:38,502 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 10:39:38,503 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 10:39:38,503 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 10:39:38,504 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 10:39:38,530 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 10:39:38,531 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 10:39:38,531 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 10:39:38,531 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 10:39:38,532 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 10:39:38,532 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 10:39:38,533 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 10:39:38,533 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 10:39:38,533 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 10:39:38,533 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 10:39:38,533 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 10:39:38,534 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 10:39:38,534 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 10:39:38,535 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 10:39:38,535 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 10:39:38,535 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 10:39:38,535 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 10:39:38,535 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 10:39:38,535 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 10:39:38,537 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 10:39:38,537 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 10:39:38,579 INFO ]: Repository-Root is: /tmp [2018-06-22 10:39:38,596 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 10:39:38,601 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 10:39:38,603 INFO ]: Initializing SmtParser... [2018-06-22 10:39:38,603 INFO ]: SmtParser initialized [2018-06-22 10:39:38,604 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/Consistency/graham-scan-full.33.smt2 [2018-06-22 10:39:38,605 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 [2018-06-22 10:39:38,698 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/graham-scan-full.33.smt2 unknown [2018-06-22 10:39:39,143 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/graham-scan-full.33.smt2 [2018-06-22 10:39:39,148 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 10:39:39,154 INFO ]: Walking toolchain with 4 elements. [2018-06-22 10:39:39,154 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 10:39:39,154 INFO ]: Initializing ChcToBoogie... [2018-06-22 10:39:39,154 INFO ]: ChcToBoogie initialized [2018-06-22 10:39:39,158 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 10:39:39" (1/1) ... [2018-06-22 10:39:39,251 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:39:39 Unit [2018-06-22 10:39:39,252 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 10:39:39,252 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 10:39:39,252 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 10:39:39,252 INFO ]: Boogie Preprocessor initialized [2018-06-22 10:39:39,274 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:39:39" (1/1) ... [2018-06-22 10:39:39,275 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:39:39" (1/1) ... [2018-06-22 10:39:39,298 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:39:39" (1/1) ... [2018-06-22 10:39:39,298 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:39:39" (1/1) ... [2018-06-22 10:39:39,319 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:39:39" (1/1) ... [2018-06-22 10:39:39,327 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:39:39" (1/1) ... [2018-06-22 10:39:39,331 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:39:39" (1/1) ... [2018-06-22 10:39:39,337 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 10:39:39,337 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 10:39:39,337 INFO ]: Initializing RCFGBuilder... [2018-06-22 10:39:39,338 INFO ]: RCFGBuilder initialized [2018-06-22 10:39:39,338 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:39:39" (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) [2018-06-22 10:39:39,351 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 10:39:39,351 INFO ]: Found specification of procedure False [2018-06-22 10:39:39,351 INFO ]: Found implementation of procedure False [2018-06-22 10:39:39,351 INFO ]: Specification and implementation of procedure step_lturn__bar given in one single declaration [2018-06-22 10:39:39,351 INFO ]: Found specification of procedure step_lturn__bar [2018-06-22 10:39:39,351 INFO ]: Found implementation of procedure step_lturn__bar [2018-06-22 10:39:39,351 INFO ]: Specification and implementation of procedure combined_lturn__bar given in one single declaration [2018-06-22 10:39:39,351 INFO ]: Found specification of procedure combined_lturn__bar [2018-06-22 10:39:39,351 INFO ]: Found implementation of procedure combined_lturn__bar [2018-06-22 10:39:39,351 INFO ]: Specification and implementation of procedure lturn__bar given in one single declaration Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 10:39:39,356 INFO ]: Found specification of procedure lturn__bar [2018-06-22 10:39:39,356 INFO ]: Found implementation of procedure lturn__bar [2018-06-22 10:39:39,356 INFO ]: Specification and implementation of procedure combined_lturn given in one single declaration [2018-06-22 10:39:39,356 INFO ]: Found specification of procedure combined_lturn [2018-06-22 10:39:39,356 INFO ]: Found implementation of procedure combined_lturn [2018-06-22 10:39:39,356 INFO ]: Specification and implementation of procedure lturn given in one single declaration [2018-06-22 10:39:39,356 INFO ]: Found specification of procedure lturn [2018-06-22 10:39:39,356 INFO ]: Found implementation of procedure lturn [2018-06-22 10:39:39,356 INFO ]: Specification and implementation of procedure step_lturn given in one single declaration [2018-06-22 10:39:39,356 INFO ]: Found specification of procedure step_lturn [2018-06-22 10:39:39,356 INFO ]: Found implementation of procedure step_lturn [2018-06-22 10:39:39,356 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 10:39:39,356 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 10:39:39,356 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 10:39:40,548 INFO ]: Using library mode [2018-06-22 10:39:40,549 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 10:39:40 BoogieIcfgContainer [2018-06-22 10:39:40,549 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 10:39:40,550 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 10:39:40,550 INFO ]: Initializing TraceAbstraction... [2018-06-22 10:39:40,557 INFO ]: TraceAbstraction initialized [2018-06-22 10:39:40,557 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 10:39:39" (1/3) ... [2018-06-22 10:39:40,558 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12485c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 10:39:40, skipping insertion in model container [2018-06-22 10:39:40,558 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:39:39" (2/3) ... [2018-06-22 10:39:40,558 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12485c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 10:39:40, skipping insertion in model container [2018-06-22 10:39:40,558 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 10:39:40" (3/3) ... [2018-06-22 10:39:40,561 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 10:39:40,571 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 10:39:40,583 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 10:39:40,627 INFO ]: Using default assertion order modulation [2018-06-22 10:39:40,628 INFO ]: Interprodecural is true [2018-06-22 10:39:40,628 INFO ]: Hoare is false [2018-06-22 10:39:40,628 INFO ]: Compute interpolants for FPandBP [2018-06-22 10:39:40,628 INFO ]: Backedges is TWOTRACK [2018-06-22 10:39:40,628 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 10:39:40,628 INFO ]: Difference is false [2018-06-22 10:39:40,628 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 10:39:40,628 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 10:39:40,649 INFO ]: Start isEmpty. Operand 162 states. [2018-06-22 10:39:40,703 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 10:39:40,703 INFO ]: Found error trace [2018-06-22 10:39:40,704 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:39:40,704 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:39:40,710 INFO ]: Analyzing trace with hash 309459744, now seen corresponding path program 1 times [2018-06-22 10:39:40,712 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:39:40,712 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:39:40,749 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:39:40,749 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:39:40,749 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:39:40,855 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:39:40,975 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 10:39:40,977 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 10:39:40,977 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 10:39:40,979 INFO ]: Interpolant automaton has 2 states [2018-06-22 10:39:40,992 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 10:39:40,992 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 10:39:40,996 INFO ]: Start difference. First operand 162 states. Second operand 2 states. [2018-06-22 10:39:41,056 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:39:41,056 INFO ]: Finished difference Result 154 states and 313 transitions. [2018-06-22 10:39:41,056 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 10:39:41,057 INFO ]: Start accepts. Automaton has 2 states. Word has length 17 [2018-06-22 10:39:41,059 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:39:41,083 INFO ]: With dead ends: 154 [2018-06-22 10:39:41,083 INFO ]: Without dead ends: 143 [2018-06-22 10:39:41,085 INFO ]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 10:39:41,101 INFO ]: Start minimizeSevpa. Operand 143 states. [2018-06-22 10:39:41,192 INFO ]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-06-22 10:39:41,193 INFO ]: Start removeUnreachable. Operand 143 states. [2018-06-22 10:39:41,203 INFO ]: Finished removeUnreachable. Reduced from 143 states to 143 states and 297 transitions. [2018-06-22 10:39:41,204 INFO ]: Start accepts. Automaton has 143 states and 297 transitions. Word has length 17 [2018-06-22 10:39:41,208 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:39:41,208 INFO ]: Abstraction has 143 states and 297 transitions. [2018-06-22 10:39:41,208 INFO ]: Interpolant automaton has 2 states. [2018-06-22 10:39:41,208 INFO ]: Start isEmpty. Operand 143 states and 297 transitions. [2018-06-22 10:39:41,216 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 10:39:41,216 INFO ]: Found error trace [2018-06-22 10:39:41,216 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:39:41,217 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:39:41,217 INFO ]: Analyzing trace with hash 1381358811, now seen corresponding path program 1 times [2018-06-22 10:39:41,217 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:39:41,217 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:39:41,218 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:39:41,218 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:39:41,218 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:39:41,326 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:39:41,840 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 10:39:41,840 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 10:39:41,840 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-22 10:39:41,841 INFO ]: Interpolant automaton has 6 states [2018-06-22 10:39:41,842 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 10:39:41,842 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 10:39:41,842 INFO ]: Start difference. First operand 143 states and 297 transitions. Second operand 6 states. [2018-06-22 10:39:44,961 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:39:44,961 INFO ]: Finished difference Result 264 states and 739 transitions. [2018-06-22 10:39:44,962 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 10:39:44,962 INFO ]: Start accepts. Automaton has 6 states. Word has length 17 [2018-06-22 10:39:44,962 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:39:44,980 INFO ]: With dead ends: 264 [2018-06-22 10:39:44,980 INFO ]: Without dead ends: 264 [2018-06-22 10:39:44,981 INFO ]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 10:39:44,981 INFO ]: Start minimizeSevpa. Operand 264 states. [2018-06-22 10:39:45,112 INFO ]: Finished minimizeSevpa. Reduced states from 264 to 252. [2018-06-22 10:39:45,112 INFO ]: Start removeUnreachable. Operand 252 states. [2018-06-22 10:39:45,118 INFO ]: Finished removeUnreachable. Reduced from 252 states to 252 states and 707 transitions. [2018-06-22 10:39:45,119 INFO ]: Start accepts. Automaton has 252 states and 707 transitions. Word has length 17 [2018-06-22 10:39:45,119 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:39:45,119 INFO ]: Abstraction has 252 states and 707 transitions. [2018-06-22 10:39:45,119 INFO ]: Interpolant automaton has 6 states. [2018-06-22 10:39:45,119 INFO ]: Start isEmpty. Operand 252 states and 707 transitions. [2018-06-22 10:39:45,126 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 10:39:45,126 INFO ]: Found error trace [2018-06-22 10:39:45,126 INFO ]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:39:45,127 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:39:45,128 INFO ]: Analyzing trace with hash -449471777, now seen corresponding path program 1 times [2018-06-22 10:39:45,128 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:39:45,128 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:39:45,129 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:39:45,129 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:39:45,129 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:39:45,169 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:39:45,311 INFO ]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-22 10:39:45,311 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:39:45,312 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 [2018-06-22 10:39:45,327 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:39:45,385 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:39:45,393 INFO ]: Computing forward predicates... [2018-06-22 10:39:46,105 INFO ]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 10:39:46,139 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:39:46,139 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2018-06-22 10:39:46,139 INFO ]: Interpolant automaton has 11 states [2018-06-22 10:39:46,139 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 10:39:46,139 INFO ]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-06-22 10:39:46,140 INFO ]: Start difference. First operand 252 states and 707 transitions. Second operand 11 states. [2018-06-22 10:39:52,556 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:39:52,556 INFO ]: Finished difference Result 506 states and 3350 transitions. [2018-06-22 10:39:52,556 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 10:39:52,556 INFO ]: Start accepts. Automaton has 11 states. Word has length 21 [2018-06-22 10:39:52,556 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:39:52,601 INFO ]: With dead ends: 506 [2018-06-22 10:39:52,601 INFO ]: Without dead ends: 506 [2018-06-22 10:39:52,601 INFO ]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2018-06-22 10:39:52,602 INFO ]: Start minimizeSevpa. Operand 506 states. [2018-06-22 10:39:52,937 INFO ]: Finished minimizeSevpa. Reduced states from 506 to 451. [2018-06-22 10:39:52,937 INFO ]: Start removeUnreachable. Operand 451 states. [2018-06-22 10:39:52,951 INFO ]: Finished removeUnreachable. Reduced from 451 states to 451 states and 2291 transitions. [2018-06-22 10:39:52,951 INFO ]: Start accepts. Automaton has 451 states and 2291 transitions. Word has length 21 [2018-06-22 10:39:52,952 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:39:52,952 INFO ]: Abstraction has 451 states and 2291 transitions. [2018-06-22 10:39:52,952 INFO ]: Interpolant automaton has 11 states. [2018-06-22 10:39:52,952 INFO ]: Start isEmpty. Operand 451 states and 2291 transitions. [2018-06-22 10:39:52,961 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 10:39:52,961 INFO ]: Found error trace [2018-06-22 10:39:52,961 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:39:52,961 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:39:52,962 INFO ]: Analyzing trace with hash -1263844483, now seen corresponding path program 1 times [2018-06-22 10:39:52,962 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:39:52,962 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:39:52,963 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:39:52,963 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:39:52,963 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:39:52,991 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:39:53,071 INFO ]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 10:39:53,072 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 10:39:53,072 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-22 10:39:53,072 INFO ]: Interpolant automaton has 6 states [2018-06-22 10:39:53,072 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 10:39:53,072 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 10:39:53,072 INFO ]: Start difference. First operand 451 states and 2291 transitions. Second operand 6 states. [2018-06-22 10:39:53,947 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:39:53,947 INFO ]: Finished difference Result 477 states and 2931 transitions. [2018-06-22 10:39:53,947 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 10:39:53,947 INFO ]: Start accepts. Automaton has 6 states. Word has length 21 [2018-06-22 10:39:53,947 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:39:53,975 INFO ]: With dead ends: 477 [2018-06-22 10:39:53,975 INFO ]: Without dead ends: 477 [2018-06-22 10:39:53,975 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 10:39:53,976 INFO ]: Start minimizeSevpa. Operand 477 states. [2018-06-22 10:39:54,324 INFO ]: Finished minimizeSevpa. Reduced states from 477 to 470. [2018-06-22 10:39:54,324 INFO ]: Start removeUnreachable. Operand 470 states. [2018-06-22 10:39:54,340 INFO ]: Finished removeUnreachable. Reduced from 470 states to 470 states and 2887 transitions. [2018-06-22 10:39:54,341 INFO ]: Start accepts. Automaton has 470 states and 2887 transitions. Word has length 21 [2018-06-22 10:39:54,341 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:39:54,341 INFO ]: Abstraction has 470 states and 2887 transitions. [2018-06-22 10:39:54,341 INFO ]: Interpolant automaton has 6 states. [2018-06-22 10:39:54,341 INFO ]: Start isEmpty. Operand 470 states and 2887 transitions. [2018-06-22 10:39:54,356 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 10:39:54,356 INFO ]: Found error trace [2018-06-22 10:39:54,356 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:39:54,357 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:39:54,357 INFO ]: Analyzing trace with hash 1758773215, now seen corresponding path program 1 times [2018-06-22 10:39:54,357 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:39:54,357 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:39:54,357 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:39:54,358 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:39:54,358 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:39:54,395 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:39:54,582 INFO ]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 10:39:54,582 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:39:54,582 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 [2018-06-22 10:39:54,591 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:39:54,651 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:39:54,655 INFO ]: Computing forward predicates... [2018-06-22 10:39:55,088 INFO ]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 10:39:55,118 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:39:55,118 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-22 10:39:55,118 INFO ]: Interpolant automaton has 14 states [2018-06-22 10:39:55,119 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 10:39:55,119 INFO ]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-06-22 10:39:55,119 INFO ]: Start difference. First operand 470 states and 2887 transitions. Second operand 14 states. [2018-06-22 10:40:08,630 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:40:08,630 INFO ]: Finished difference Result 3337 states and 36612 transitions. [2018-06-22 10:40:08,630 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-06-22 10:40:08,631 INFO ]: Start accepts. Automaton has 14 states. Word has length 25 [2018-06-22 10:40:08,631 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:40:08,871 INFO ]: With dead ends: 3337 [2018-06-22 10:40:08,871 INFO ]: Without dead ends: 3223 [2018-06-22 10:40:08,872 INFO ]: 0 DeclaredPredicates, 71 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=307, Invalid=2449, Unknown=0, NotChecked=0, Total=2756 [2018-06-22 10:40:08,874 INFO ]: Start minimizeSevpa. Operand 3223 states. [2018-06-22 10:40:12,542 INFO ]: Finished minimizeSevpa. Reduced states from 3223 to 2814. [2018-06-22 10:40:12,542 INFO ]: Start removeUnreachable. Operand 2814 states. [2018-06-22 10:40:12,806 INFO ]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 32032 transitions. [2018-06-22 10:40:12,806 INFO ]: Start accepts. Automaton has 2814 states and 32032 transitions. Word has length 25 [2018-06-22 10:40:12,806 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:40:12,806 INFO ]: Abstraction has 2814 states and 32032 transitions. [2018-06-22 10:40:12,806 INFO ]: Interpolant automaton has 14 states. [2018-06-22 10:40:12,806 INFO ]: Start isEmpty. Operand 2814 states and 32032 transitions. [2018-06-22 10:40:12,825 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 10:40:12,825 INFO ]: Found error trace [2018-06-22 10:40:12,825 INFO ]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:40:12,826 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:40:12,826 INFO ]: Analyzing trace with hash 2136781453, now seen corresponding path program 1 times [2018-06-22 10:40:12,826 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:40:12,826 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:40:12,827 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:40:12,827 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:40:12,827 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:40:12,853 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:40:13,237 INFO ]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-22 10:40:13,237 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:40:13,237 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) [2018-06-22 10:40:13,249 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 10:40:13,310 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:40:13,313 INFO ]: Computing forward predicates... [2018-06-22 10:40:13,572 INFO ]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 10:40:13,596 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:40:13,596 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2018-06-22 10:40:13,596 INFO ]: Interpolant automaton has 11 states [2018-06-22 10:40:13,596 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 10:40:13,596 INFO ]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-06-22 10:40:13,596 INFO ]: Start difference. First operand 2814 states and 32032 transitions. Second operand 11 states. [2018-06-22 10:40:17,656 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:40:17,656 INFO ]: Finished difference Result 4866 states and 69168 transitions. [2018-06-22 10:40:17,763 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 10:40:17,763 INFO ]: Start accepts. Automaton has 11 states. Word has length 21 [2018-06-22 10:40:17,763 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:40:18,386 INFO ]: With dead ends: 4866 [2018-06-22 10:40:18,386 INFO ]: Without dead ends: 4855 [2018-06-22 10:40:18,387 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2018-06-22 10:40:18,390 INFO ]: Start minimizeSevpa. Operand 4855 states. [2018-06-22 10:40:25,272 INFO ]: Finished minimizeSevpa. Reduced states from 4855 to 3997. [2018-06-22 10:40:25,272 INFO ]: Start removeUnreachable. Operand 3997 states. [2018-06-22 10:40:25,636 INFO ]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 58098 transitions. [2018-06-22 10:40:25,636 INFO ]: Start accepts. Automaton has 3997 states and 58098 transitions. Word has length 21 [2018-06-22 10:40:25,636 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:40:25,636 INFO ]: Abstraction has 3997 states and 58098 transitions. [2018-06-22 10:40:25,636 INFO ]: Interpolant automaton has 11 states. [2018-06-22 10:40:25,636 INFO ]: Start isEmpty. Operand 3997 states and 58098 transitions. [2018-06-22 10:40:25,660 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 10:40:25,660 INFO ]: Found error trace [2018-06-22 10:40:25,660 INFO ]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:40:25,660 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:40:25,664 INFO ]: Analyzing trace with hash -524665048, now seen corresponding path program 1 times [2018-06-22 10:40:25,664 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:40:25,664 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:40:25,665 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:40:25,665 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:40:25,665 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:40:25,686 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:40:26,199 INFO ]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-22 10:40:26,199 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:40:26,199 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) [2018-06-22 10:40:26,214 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 10:40:26,268 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:40:26,271 INFO ]: Computing forward predicates... [2018-06-22 10:40:27,470 INFO ]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 10:40:27,490 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:40:27,490 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2018-06-22 10:40:27,491 INFO ]: Interpolant automaton has 13 states [2018-06-22 10:40:27,491 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 10:40:27,491 INFO ]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-06-22 10:40:27,491 INFO ]: Start difference. First operand 3997 states and 58098 transitions. Second operand 13 states. Received shutdown request... [2018-06-22 10:40:37,641 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-06-22 10:40:37,641 WARN ]: Verification canceled [2018-06-22 10:40:37,647 WARN ]: Timeout [2018-06-22 10:40:37,647 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 10:40:37 BoogieIcfgContainer [2018-06-22 10:40:37,647 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 10:40:37,648 INFO ]: Toolchain (without parser) took 58499.54 ms. Allocated memory was 302.5 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 242.9 MB in the beginning and 365.3 MB in the end (delta: -122.4 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-22 10:40:37,649 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 302.5 MB. Free memory is still 266.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 10:40:37,651 INFO ]: ChcToBoogie took 97.61 ms. Allocated memory is still 302.5 MB. Free memory was 242.9 MB in the beginning and 239.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-22 10:40:37,651 INFO ]: Boogie Preprocessor took 84.71 ms. Allocated memory is still 302.5 MB. Free memory was 239.0 MB in the beginning and 237.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 10:40:37,652 INFO ]: RCFGBuilder took 1211.40 ms. Allocated memory is still 302.5 MB. Free memory was 237.0 MB in the beginning and 189.9 MB in the end (delta: 47.0 MB). Peak memory consumption was 47.0 MB. Max. memory is 3.6 GB. [2018-06-22 10:40:37,658 INFO ]: TraceAbstraction took 57096.85 ms. Allocated memory was 302.5 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 189.9 MB in the beginning and 365.3 MB in the end (delta: -175.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. [2018-06-22 10:40:37,661 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 302.5 MB. Free memory is still 266.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 97.61 ms. Allocated memory is still 302.5 MB. Free memory was 242.9 MB in the beginning and 239.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 84.71 ms. Allocated memory is still 302.5 MB. Free memory was 239.0 MB in the beginning and 237.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 1211.40 ms. Allocated memory is still 302.5 MB. Free memory was 237.0 MB in the beginning and 189.9 MB in the end (delta: 47.0 MB). Peak memory consumption was 47.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 57096.85 ms. Allocated memory was 302.5 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 189.9 MB in the beginning and 365.3 MB in the end (delta: -175.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was constructing difference of abstraction (3997states) and interpolant automaton (currently 22 states, 13 states before enhancement), while ReachableStatesComputation was computing reachable states (12770 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 162 locations, 1 error locations. TIMEOUT Result, 57.0s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 39.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3054 SDtfs, 176 SDslu, 19000 SDs, 0 SdLazy, 35638 SolverSat, 3438 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 30.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 196 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3997occurred 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: 12.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 1341 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 239 NumberOfCodeBlocks, 239 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 228 ConstructedInterpolants, 0 QuantifiedInterpolants, 12528 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1652 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 35/77 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/graham-scan-full.33.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_10-40-37-675.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/graham-scan-full.33.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_10-40-37-675.csv Completed graceful shutdown