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_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/HOLA/44.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:07:06,252 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:07:06,255 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:07:06,268 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:07:06,268 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:07:06,270 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:07:06,271 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:07:06,274 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:07:06,276 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:07:06,277 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:07:06,278 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:07:06,280 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:07:06,281 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:07:06,282 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:07:06,285 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:07:06,287 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:07:06,288 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:07:06,301 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:07:06,303 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:07:06,304 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:07:06,305 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:07:06,307 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 01:07:06,307 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 01:07:06,308 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 01:07:06,309 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 01:07:06,315 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 01:07:06,316 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 01:07:06,317 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 01:07:06,318 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... 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[2018-06-22 01:07:06,326 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:07:06,354 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:07:06,355 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:07:06,355 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:07:06,355 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:07:06,356 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:07:06,356 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:07:06,361 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:07:06,362 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:07:06,362 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:07:06,362 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:07:06,362 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:07:06,363 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:07:06,363 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:07:06,364 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:07:06,364 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:07:06,364 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:07:06,364 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:07:06,366 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:07:06,366 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:07:06,426 INFO ]: Repository-Root is: /tmp [2018-06-22 01:07:06,444 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:07:06,450 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:07:06,452 INFO ]: Initializing SmtParser... [2018-06-22 01:07:06,452 INFO ]: SmtParser initialized [2018-06-22 01:07:06,453 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/44.c.smt2 [2018-06-22 01:07:06,454 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 01:07:06,551 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/44.c.smt2 unknown [2018-06-22 01:07:07,130 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/44.c.smt2 [2018-06-22 01:07:07,135 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:07:07,140 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:07:07,141 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:07:07,141 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:07:07,141 INFO ]: ChcToBoogie initialized [2018-06-22 01:07:07,144 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:07:07" (1/1) ... [2018-06-22 01:07:07,210 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:07:07 Unit [2018-06-22 01:07:07,210 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:07:07,211 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:07:07,211 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:07:07,211 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:07:07,232 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:07:07" (1/1) ... [2018-06-22 01:07:07,232 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:07:07" (1/1) ... [2018-06-22 01:07:07,242 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:07:07" (1/1) ... [2018-06-22 01:07:07,242 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:07:07" (1/1) ... [2018-06-22 01:07:07,256 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:07:07" (1/1) ... [2018-06-22 01:07:07,258 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:07:07" (1/1) ... [2018-06-22 01:07:07,260 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:07:07" (1/1) ... [2018-06-22 01:07:07,270 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:07:07,271 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:07:07,271 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:07:07,271 INFO ]: RCFGBuilder initialized [2018-06-22 01:07:07,271 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:07:07" (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 01:07:07,295 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:07:07,295 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:07:07,295 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:07:07,295 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:07:07,295 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:07:07,295 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 [2018-06-22 01:07:07,946 INFO ]: Using library mode [2018-06-22 01:07:07,946 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:07:07 BoogieIcfgContainer [2018-06-22 01:07:07,946 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:07:07,948 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:07:07,948 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:07:07,953 INFO ]: TraceAbstraction initialized [2018-06-22 01:07:07,953 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:07:07" (1/3) ... [2018-06-22 01:07:07,954 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35f3005e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:07:07, skipping insertion in model container [2018-06-22 01:07:07,954 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:07:07" (2/3) ... [2018-06-22 01:07:07,954 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35f3005e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:07:07, skipping insertion in model container [2018-06-22 01:07:07,954 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:07:07" (3/3) ... [2018-06-22 01:07:07,956 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:07:07,962 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:07:07,969 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:07:08,006 INFO ]: Using default assertion order modulation [2018-06-22 01:07:08,006 INFO ]: Interprodecural is true [2018-06-22 01:07:08,006 INFO ]: Hoare is false [2018-06-22 01:07:08,006 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:07:08,006 INFO ]: Backedges is TWOTRACK [2018-06-22 01:07:08,006 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:07:08,006 INFO ]: Difference is false [2018-06-22 01:07:08,006 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:07:08,006 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:07:08,020 INFO ]: Start isEmpty. Operand 32 states. [2018-06-22 01:07:08,033 INFO ]: Finished isEmpty. Found accepting run of length 24 [2018-06-22 01:07:08,033 INFO ]: Found error trace [2018-06-22 01:07:08,034 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:07:08,034 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:07:08,040 INFO ]: Analyzing trace with hash -1052986966, now seen corresponding path program 1 times [2018-06-22 01:07:08,042 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:07:08,043 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:07:08,083 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:07:08,083 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:07:08,083 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:07:08,190 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:07:09,202 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:07:09,204 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:07:09,222 INFO ]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2018-06-22 01:07:09,224 INFO ]: Interpolant automaton has 17 states [2018-06-22 01:07:09,234 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 01:07:09,235 INFO ]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2018-06-22 01:07:09,237 INFO ]: Start difference. First operand 32 states. Second operand 17 states. [2018-06-22 01:07:09,940 WARN ]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-06-22 01:07:10,380 WARN ]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2018-06-22 01:07:10,712 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:07:10,712 INFO ]: Finished difference Result 50 states and 55 transitions. [2018-06-22 01:07:10,713 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-06-22 01:07:10,714 INFO ]: Start accepts. Automaton has 17 states. Word has length 23 [2018-06-22 01:07:10,714 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:07:10,724 INFO ]: With dead ends: 50 [2018-06-22 01:07:10,724 INFO ]: Without dead ends: 46 [2018-06-22 01:07:10,727 INFO ]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=291, Invalid=701, Unknown=0, NotChecked=0, Total=992 [2018-06-22 01:07:10,746 INFO ]: Start minimizeSevpa. Operand 46 states. [2018-06-22 01:07:10,772 INFO ]: Finished minimizeSevpa. Reduced states from 46 to 35. [2018-06-22 01:07:10,774 INFO ]: Start removeUnreachable. Operand 35 states. [2018-06-22 01:07:10,774 INFO ]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2018-06-22 01:07:10,776 INFO ]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 23 [2018-06-22 01:07:10,776 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:07:10,776 INFO ]: Abstraction has 35 states and 39 transitions. [2018-06-22 01:07:10,776 INFO ]: Interpolant automaton has 17 states. [2018-06-22 01:07:10,776 INFO ]: Start isEmpty. Operand 35 states and 39 transitions. [2018-06-22 01:07:10,776 INFO ]: Finished isEmpty. Found accepting run of length 24 [2018-06-22 01:07:10,776 INFO ]: Found error trace [2018-06-22 01:07:10,777 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:07:10,777 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:07:10,777 INFO ]: Analyzing trace with hash 270761870, now seen corresponding path program 1 times [2018-06-22 01:07:10,777 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:07:10,777 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:07:10,777 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:07:10,778 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:07:10,778 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:07:10,828 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:07:11,033 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:07:11,033 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:07:11,033 INFO ]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-06-22 01:07:11,037 INFO ]: Interpolant automaton has 13 states [2018-06-22 01:07:11,037 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 01:07:11,037 INFO ]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-06-22 01:07:11,038 INFO ]: Start difference. First operand 35 states and 39 transitions. Second operand 13 states. [2018-06-22 01:07:11,570 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:07:11,570 INFO ]: Finished difference Result 46 states and 50 transitions. [2018-06-22 01:07:11,571 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-06-22 01:07:11,571 INFO ]: Start accepts. Automaton has 13 states. Word has length 23 [2018-06-22 01:07:11,571 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:07:11,572 INFO ]: With dead ends: 46 [2018-06-22 01:07:11,572 INFO ]: Without dead ends: 45 [2018-06-22 01:07:11,573 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=383, Unknown=0, NotChecked=0, Total=552 [2018-06-22 01:07:11,574 INFO ]: Start minimizeSevpa. Operand 45 states. [2018-06-22 01:07:11,578 INFO ]: Finished minimizeSevpa. Reduced states from 45 to 36. [2018-06-22 01:07:11,578 INFO ]: Start removeUnreachable. Operand 36 states. [2018-06-22 01:07:11,579 INFO ]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-06-22 01:07:11,579 INFO ]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 23 [2018-06-22 01:07:11,580 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:07:11,580 INFO ]: Abstraction has 36 states and 40 transitions. [2018-06-22 01:07:11,582 INFO ]: Interpolant automaton has 13 states. [2018-06-22 01:07:11,582 INFO ]: Start isEmpty. Operand 36 states and 40 transitions. [2018-06-22 01:07:11,582 INFO ]: Finished isEmpty. Found accepting run of length 24 [2018-06-22 01:07:11,582 INFO ]: Found error trace [2018-06-22 01:07:11,582 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:07:11,583 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:07:11,583 INFO ]: Analyzing trace with hash 1236422606, now seen corresponding path program 1 times [2018-06-22 01:07:11,583 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:07:11,583 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:07:11,583 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:07:11,584 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:07:11,584 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:07:11,626 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:07:11,787 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:07:11,787 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:07:11,787 INFO ]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-06-22 01:07:11,787 INFO ]: Interpolant automaton has 13 states [2018-06-22 01:07:11,788 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 01:07:11,788 INFO ]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-06-22 01:07:11,788 INFO ]: Start difference. First operand 36 states and 40 transitions. Second operand 13 states. [2018-06-22 01:07:12,004 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:07:12,004 INFO ]: Finished difference Result 40 states and 43 transitions. [2018-06-22 01:07:12,006 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-06-22 01:07:12,006 INFO ]: Start accepts. Automaton has 13 states. Word has length 23 [2018-06-22 01:07:12,006 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:07:12,007 INFO ]: With dead ends: 40 [2018-06-22 01:07:12,007 INFO ]: Without dead ends: 35 [2018-06-22 01:07:12,007 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=169, Invalid=383, Unknown=0, NotChecked=0, Total=552 [2018-06-22 01:07:12,007 INFO ]: Start minimizeSevpa. Operand 35 states. [2018-06-22 01:07:12,010 INFO ]: Finished minimizeSevpa. Reduced states from 35 to 32. [2018-06-22 01:07:12,010 INFO ]: Start removeUnreachable. Operand 32 states. [2018-06-22 01:07:12,011 INFO ]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2018-06-22 01:07:12,011 INFO ]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 23 [2018-06-22 01:07:12,011 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:07:12,011 INFO ]: Abstraction has 32 states and 35 transitions. [2018-06-22 01:07:12,011 INFO ]: Interpolant automaton has 13 states. [2018-06-22 01:07:12,011 INFO ]: Start isEmpty. Operand 32 states and 35 transitions. [2018-06-22 01:07:12,012 INFO ]: Finished isEmpty. Found accepting run of length 28 [2018-06-22 01:07:12,012 INFO ]: Found error trace [2018-06-22 01:07:12,012 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:07:12,012 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:07:12,012 INFO ]: Analyzing trace with hash 862080130, now seen corresponding path program 1 times [2018-06-22 01:07:12,012 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:07:12,012 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:07:12,013 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:07:12,013 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:07:12,013 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:07:12,036 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:07:12,514 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:07:12,514 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:07:12,514 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 01:07:12,530 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:07:12,622 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:07:12,637 INFO ]: Computing forward predicates... [2018-06-22 01:07:13,379 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:07:13,401 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:07:13,401 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 34 [2018-06-22 01:07:13,401 INFO ]: Interpolant automaton has 34 states [2018-06-22 01:07:13,402 INFO ]: Constructing interpolant automaton starting with 34 interpolants. [2018-06-22 01:07:13,402 INFO ]: CoverageRelationStatistics Valid=77, Invalid=1045, Unknown=0, NotChecked=0, Total=1122 [2018-06-22 01:07:13,403 INFO ]: Start difference. First operand 32 states and 35 transitions. Second operand 34 states. [2018-06-22 01:07:14,521 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:07:14,521 INFO ]: Finished difference Result 79 states and 87 transitions. [2018-06-22 01:07:14,521 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-06-22 01:07:14,521 INFO ]: Start accepts. Automaton has 34 states. Word has length 27 [2018-06-22 01:07:14,522 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:07:14,523 INFO ]: With dead ends: 79 [2018-06-22 01:07:14,523 INFO ]: Without dead ends: 75 [2018-06-22 01:07:14,524 INFO ]: 0 DeclaredPredicates, 68 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=554, Invalid=2416, Unknown=0, NotChecked=0, Total=2970 [2018-06-22 01:07:14,524 INFO ]: Start minimizeSevpa. Operand 75 states. [2018-06-22 01:07:14,529 INFO ]: Finished minimizeSevpa. Reduced states from 75 to 47. [2018-06-22 01:07:14,529 INFO ]: Start removeUnreachable. Operand 47 states. [2018-06-22 01:07:14,531 INFO ]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2018-06-22 01:07:14,531 INFO ]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 27 [2018-06-22 01:07:14,531 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:07:14,531 INFO ]: Abstraction has 47 states and 51 transitions. [2018-06-22 01:07:14,531 INFO ]: Interpolant automaton has 34 states. [2018-06-22 01:07:14,531 INFO ]: Start isEmpty. Operand 47 states and 51 transitions. [2018-06-22 01:07:14,532 INFO ]: Finished isEmpty. Found accepting run of length 28 [2018-06-22 01:07:14,532 INFO ]: Found error trace [2018-06-22 01:07:14,532 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:07:14,532 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:07:14,532 INFO ]: Analyzing trace with hash -2109138330, now seen corresponding path program 1 times [2018-06-22 01:07:14,532 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:07:14,532 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:07:14,533 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:07:14,533 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:07:14,533 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:07:14,552 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:07:14,719 INFO ]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 01:07:14,719 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:07:14,719 INFO ]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-06-22 01:07:14,719 INFO ]: Interpolant automaton has 15 states [2018-06-22 01:07:14,719 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 01:07:14,719 INFO ]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-06-22 01:07:14,720 INFO ]: Start difference. First operand 47 states and 51 transitions. Second operand 15 states. [2018-06-22 01:07:15,397 WARN ]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-06-22 01:07:15,401 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:07:15,401 INFO ]: Finished difference Result 53 states and 56 transitions. [2018-06-22 01:07:15,401 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-22 01:07:15,401 INFO ]: Start accepts. Automaton has 15 states. Word has length 27 [2018-06-22 01:07:15,401 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:07:15,402 INFO ]: With dead ends: 53 [2018-06-22 01:07:15,402 INFO ]: Without dead ends: 52 [2018-06-22 01:07:15,402 INFO ]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702 [2018-06-22 01:07:15,403 INFO ]: Start minimizeSevpa. Operand 52 states. [2018-06-22 01:07:15,406 INFO ]: Finished minimizeSevpa. Reduced states from 52 to 46. [2018-06-22 01:07:15,406 INFO ]: Start removeUnreachable. Operand 46 states. [2018-06-22 01:07:15,410 INFO ]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2018-06-22 01:07:15,411 INFO ]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 27 [2018-06-22 01:07:15,411 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:07:15,411 INFO ]: Abstraction has 46 states and 49 transitions. [2018-06-22 01:07:15,411 INFO ]: Interpolant automaton has 15 states. [2018-06-22 01:07:15,411 INFO ]: Start isEmpty. Operand 46 states and 49 transitions. [2018-06-22 01:07:15,412 INFO ]: Finished isEmpty. Found accepting run of length 28 [2018-06-22 01:07:15,412 INFO ]: Found error trace [2018-06-22 01:07:15,412 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:07:15,412 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:07:15,412 INFO ]: Analyzing trace with hash -1143477594, now seen corresponding path program 1 times [2018-06-22 01:07:15,412 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:07:15,412 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:07:15,413 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:07:15,413 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:07:15,413 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:07:15,439 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:07:15,707 INFO ]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 01:07:15,707 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:07:15,707 INFO ]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-06-22 01:07:15,707 INFO ]: Interpolant automaton has 15 states [2018-06-22 01:07:15,707 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 01:07:15,707 INFO ]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-06-22 01:07:15,708 INFO ]: Start difference. First operand 46 states and 49 transitions. Second operand 15 states. [2018-06-22 01:07:16,018 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:07:16,019 INFO ]: Finished difference Result 47 states and 49 transitions. [2018-06-22 01:07:16,019 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-22 01:07:16,019 INFO ]: Start accepts. Automaton has 15 states. Word has length 27 [2018-06-22 01:07:16,019 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:07:16,019 INFO ]: With dead ends: 47 [2018-06-22 01:07:16,019 INFO ]: Without dead ends: 42 [2018-06-22 01:07:16,020 INFO ]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702 [2018-06-22 01:07:16,020 INFO ]: Start minimizeSevpa. Operand 42 states. [2018-06-22 01:07:16,023 INFO ]: Finished minimizeSevpa. Reduced states from 42 to 39. [2018-06-22 01:07:16,023 INFO ]: Start removeUnreachable. Operand 39 states. [2018-06-22 01:07:16,024 INFO ]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2018-06-22 01:07:16,024 INFO ]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 27 [2018-06-22 01:07:16,024 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:07:16,024 INFO ]: Abstraction has 39 states and 40 transitions. [2018-06-22 01:07:16,024 INFO ]: Interpolant automaton has 15 states. [2018-06-22 01:07:16,024 INFO ]: Start isEmpty. Operand 39 states and 40 transitions. [2018-06-22 01:07:16,025 INFO ]: Finished isEmpty. Found accepting run of length 28 [2018-06-22 01:07:16,025 INFO ]: Found error trace [2018-06-22 01:07:16,025 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:07:16,025 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:07:16,025 INFO ]: Analyzing trace with hash 1612224621, now seen corresponding path program 1 times [2018-06-22 01:07:16,025 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:07:16,025 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:07:16,026 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:07:16,026 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:07:16,026 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:07:16,041 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:07:16,426 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:07:16,426 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:07:16,426 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 01:07:16,432 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:07:16,511 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:07:16,516 INFO ]: Computing forward predicates... [2018-06-22 01:07:17,146 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:07:17,166 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:07:17,166 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 32 [2018-06-22 01:07:17,167 INFO ]: Interpolant automaton has 32 states [2018-06-22 01:07:17,167 INFO ]: Constructing interpolant automaton starting with 32 interpolants. [2018-06-22 01:07:17,167 INFO ]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2018-06-22 01:07:17,167 INFO ]: Start difference. First operand 39 states and 40 transitions. Second operand 32 states. [2018-06-22 01:07:18,845 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:07:18,845 INFO ]: Finished difference Result 80 states and 82 transitions. [2018-06-22 01:07:18,846 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-06-22 01:07:18,846 INFO ]: Start accepts. Automaton has 32 states. Word has length 27 [2018-06-22 01:07:18,846 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:07:18,847 INFO ]: With dead ends: 80 [2018-06-22 01:07:18,847 INFO ]: Without dead ends: 66 [2018-06-22 01:07:18,848 INFO ]: 0 DeclaredPredicates, 79 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=897, Invalid=3135, Unknown=0, NotChecked=0, Total=4032 [2018-06-22 01:07:18,848 INFO ]: Start minimizeSevpa. Operand 66 states. [2018-06-22 01:07:18,852 INFO ]: Finished minimizeSevpa. Reduced states from 66 to 43. [2018-06-22 01:07:18,852 INFO ]: Start removeUnreachable. Operand 43 states. [2018-06-22 01:07:18,853 INFO ]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2018-06-22 01:07:18,853 INFO ]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 27 [2018-06-22 01:07:18,853 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:07:18,853 INFO ]: Abstraction has 43 states and 44 transitions. [2018-06-22 01:07:18,853 INFO ]: Interpolant automaton has 32 states. [2018-06-22 01:07:18,853 INFO ]: Start isEmpty. Operand 43 states and 44 transitions. [2018-06-22 01:07:18,854 INFO ]: Finished isEmpty. Found accepting run of length 32 [2018-06-22 01:07:18,854 INFO ]: Found error trace [2018-06-22 01:07:18,854 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:07:18,854 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:07:18,854 INFO ]: Analyzing trace with hash -1861305510, now seen corresponding path program 2 times [2018-06-22 01:07:18,854 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:07:18,854 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:07:18,855 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:07:18,856 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:07:18,856 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:07:18,891 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:07:19,981 INFO ]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:07:19,981 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:07:19,981 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 01:07:19,999 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:07:20,092 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 01:07:20,092 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:07:20,103 INFO ]: Computing forward predicates... [2018-06-22 01:07:21,005 INFO ]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:07:21,025 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:07:21,025 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 42 [2018-06-22 01:07:21,026 INFO ]: Interpolant automaton has 42 states [2018-06-22 01:07:21,026 INFO ]: Constructing interpolant automaton starting with 42 interpolants. [2018-06-22 01:07:21,027 INFO ]: CoverageRelationStatistics Valid=106, Invalid=1616, Unknown=0, NotChecked=0, Total=1722 [2018-06-22 01:07:21,027 INFO ]: Start difference. First operand 43 states and 44 transitions. Second operand 42 states. [2018-06-22 01:07:23,581 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:07:23,581 INFO ]: Finished difference Result 88 states and 90 transitions. [2018-06-22 01:07:23,586 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-06-22 01:07:23,586 INFO ]: Start accepts. Automaton has 42 states. Word has length 31 [2018-06-22 01:07:23,586 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:07:23,587 INFO ]: With dead ends: 88 [2018-06-22 01:07:23,587 INFO ]: Without dead ends: 74 [2018-06-22 01:07:23,589 INFO ]: 0 DeclaredPredicates, 91 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 980 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1083, Invalid=4923, Unknown=0, NotChecked=0, Total=6006 [2018-06-22 01:07:23,589 INFO ]: Start minimizeSevpa. Operand 74 states. [2018-06-22 01:07:23,592 INFO ]: Finished minimizeSevpa. Reduced states from 74 to 47. [2018-06-22 01:07:23,593 INFO ]: Start removeUnreachable. Operand 47 states. [2018-06-22 01:07:23,594 INFO ]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2018-06-22 01:07:23,594 INFO ]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 31 [2018-06-22 01:07:23,594 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:07:23,594 INFO ]: Abstraction has 47 states and 48 transitions. [2018-06-22 01:07:23,594 INFO ]: Interpolant automaton has 42 states. [2018-06-22 01:07:23,594 INFO ]: Start isEmpty. Operand 47 states and 48 transitions. [2018-06-22 01:07:23,595 INFO ]: Finished isEmpty. Found accepting run of length 36 [2018-06-22 01:07:23,595 INFO ]: Found error trace [2018-06-22 01:07:23,595 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:07:23,595 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:07:23,596 INFO ]: Analyzing trace with hash -1866125539, now seen corresponding path program 2 times [2018-06-22 01:07:23,596 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:07:23,596 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:07:23,596 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:07:23,596 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:07:23,596 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:07:23,624 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:07:24,091 INFO ]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 01:07:24,091 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:07:24,091 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 [2018-06-22 01:07:24,106 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 01:07:24,214 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 01:07:24,214 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:07:24,228 INFO ]: Computing forward predicates... [2018-06-22 01:07:25,069 INFO ]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:07:25,090 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:07:25,090 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 29] total 43 [2018-06-22 01:07:25,090 INFO ]: Interpolant automaton has 43 states [2018-06-22 01:07:25,090 INFO ]: Constructing interpolant automaton starting with 43 interpolants. [2018-06-22 01:07:25,091 INFO ]: CoverageRelationStatistics Valid=118, Invalid=1688, Unknown=0, NotChecked=0, Total=1806 [2018-06-22 01:07:25,091 INFO ]: Start difference. First operand 47 states and 48 transitions. Second operand 43 states. [2018-06-22 01:07:25,426 WARN ]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-06-22 01:07:29,241 WARN ]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-06-22 01:07:29,355 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:07:29,355 INFO ]: Finished difference Result 82 states and 83 transitions. [2018-06-22 01:07:29,356 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-06-22 01:07:29,356 INFO ]: Start accepts. Automaton has 43 states. Word has length 35 [2018-06-22 01:07:29,356 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:07:29,357 INFO ]: With dead ends: 82 [2018-06-22 01:07:29,357 INFO ]: Without dead ends: 40 [2018-06-22 01:07:29,358 INFO ]: 0 DeclaredPredicates, 100 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1057 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1094, Invalid=5226, Unknown=0, NotChecked=0, Total=6320 [2018-06-22 01:07:29,358 INFO ]: Start minimizeSevpa. Operand 40 states. [2018-06-22 01:07:29,361 INFO ]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-06-22 01:07:29,361 INFO ]: Start removeUnreachable. Operand 40 states. [2018-06-22 01:07:29,362 INFO ]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-06-22 01:07:29,362 INFO ]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 35 [2018-06-22 01:07:29,362 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:07:29,362 INFO ]: Abstraction has 40 states and 40 transitions. [2018-06-22 01:07:29,362 INFO ]: Interpolant automaton has 43 states. [2018-06-22 01:07:29,362 INFO ]: Start isEmpty. Operand 40 states and 40 transitions. [2018-06-22 01:07:29,363 INFO ]: Finished isEmpty. Found accepting run of length 40 [2018-06-22 01:07:29,363 INFO ]: Found error trace [2018-06-22 01:07:29,363 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:07:29,363 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:07:29,363 INFO ]: Analyzing trace with hash -975956726, now seen corresponding path program 3 times [2018-06-22 01:07:29,364 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:07:29,364 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:07:29,364 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:07:29,364 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:07:29,364 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:07:29,389 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:07:30,026 INFO ]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 01:07:30,026 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:07:30,026 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 01:07:30,043 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:07:30,173 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-06-22 01:07:30,173 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:07:30,181 INFO ]: Computing forward predicates... [2018-06-22 01:07:31,259 INFO ]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:07:31,280 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:07:31,280 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 33] total 51 [2018-06-22 01:07:31,280 INFO ]: Interpolant automaton has 51 states [2018-06-22 01:07:31,281 INFO ]: Constructing interpolant automaton starting with 51 interpolants. [2018-06-22 01:07:31,281 INFO ]: CoverageRelationStatistics Valid=141, Invalid=2409, Unknown=0, NotChecked=0, Total=2550 [2018-06-22 01:07:31,281 INFO ]: Start difference. First operand 40 states and 40 transitions. Second operand 51 states. [2018-06-22 01:07:34,681 WARN ]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2018-06-22 01:07:34,974 WARN ]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2018-06-22 01:07:35,586 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:07:35,586 INFO ]: Finished difference Result 49 states and 49 transitions. [2018-06-22 01:07:35,586 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-06-22 01:07:35,586 INFO ]: Start accepts. Automaton has 51 states. Word has length 39 [2018-06-22 01:07:35,586 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:07:35,586 INFO ]: With dead ends: 49 [2018-06-22 01:07:35,586 INFO ]: Without dead ends: 0 [2018-06-22 01:07:35,588 INFO ]: 0 DeclaredPredicates, 112 GetRequests, 15 SyntacticMatches, 7 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1323 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1233, Invalid=7139, Unknown=0, NotChecked=0, Total=8372 [2018-06-22 01:07:35,588 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:07:35,588 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:07:35,588 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:07:35,588 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:07:35,589 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2018-06-22 01:07:35,589 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:07:35,589 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:07:35,589 INFO ]: Interpolant automaton has 51 states. [2018-06-22 01:07:35,589 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:07:35,589 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:07:35,593 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:07:35 BoogieIcfgContainer [2018-06-22 01:07:35,593 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:07:35,594 INFO ]: Toolchain (without parser) took 28458.59 ms. Allocated memory was 302.0 MB in the beginning and 575.1 MB in the end (delta: 273.2 MB). Free memory was 240.4 MB in the beginning and 498.0 MB in the end (delta: -257.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 3.6 GB. [2018-06-22 01:07:35,594 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 302.0 MB. Free memory is still 267.5 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:07:35,595 INFO ]: ChcToBoogie took 69.93 ms. Allocated memory is still 302.0 MB. Free memory was 240.4 MB in the beginning and 237.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:07:35,595 INFO ]: Boogie Preprocessor took 59.24 ms. Allocated memory is still 302.0 MB. Free memory was 237.4 MB in the beginning and 236.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. [2018-06-22 01:07:35,595 INFO ]: RCFGBuilder took 675.92 ms. Allocated memory is still 302.0 MB. Free memory was 236.3 MB in the beginning and 204.2 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 3.6 GB. [2018-06-22 01:07:35,596 INFO ]: TraceAbstraction took 27645.21 ms. Allocated memory was 302.0 MB in the beginning and 575.1 MB in the end (delta: 273.2 MB). Free memory was 204.2 MB in the beginning and 498.0 MB in the end (delta: -293.8 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:07:35,598 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 302.0 MB. Free memory is still 267.5 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 69.93 ms. Allocated memory is still 302.0 MB. Free memory was 240.4 MB in the beginning and 237.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 59.24 ms. Allocated memory is still 302.0 MB. Free memory was 237.4 MB in the beginning and 236.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 675.92 ms. Allocated memory is still 302.0 MB. Free memory was 236.3 MB in the beginning and 204.2 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 3.6 GB. * TraceAbstraction took 27645.21 ms. Allocated memory was 302.0 MB in the beginning and 575.1 MB in the end (delta: 273.2 MB). Free memory was 204.2 MB in the beginning and 498.0 MB in the end (delta: -293.8 MB). There was no memory consumed. 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, 32 locations, 1 error locations. SAFE Result, 27.5s OverallTime, 10 OverallIterations, 5 TraceHistogramMax, 17.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 179 SDtfs, 2784 SDslu, 4072 SDs, 0 SdLazy, 3894 SolverSat, 668 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 589 GetRequests, 94 SyntacticMatches, 12 SemanticMatches, 483 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4340 ImplicationChecksByTransitivity, 20.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=4, 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, 10 MinimizatonAttempts, 110 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 441 NumberOfCodeBlocks, 441 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 426 ConstructedInterpolants, 39 QuantifiedInterpolants, 72918 SizeOfPredicates, 292 NumberOfNonLiveVariables, 3446 ConjunctsInSsa, 319 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 20/128 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/44.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-07-35-606.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/44.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-07-35-606.csv Received shutdown request...