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/llreve/fib_merged_safe.c-1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:11:24,571 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:11:24,573 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:11:24,587 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:11:24,589 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:11:24,590 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:11:24,591 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:11:24,595 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:11:24,598 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:11:24,599 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:11:24,599 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:11:24,600 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:11:24,601 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:11:24,603 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:11:24,604 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:11:24,605 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:11:24,619 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:11:24,621 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:11:24,622 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:11:24,623 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:11:24,624 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:11:24,626 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 01:11:24,627 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 01:11:24,632 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 01:11:24,633 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 01:11:24,634 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 01:11:24,634 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 01:11:24,635 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 01:11:24,640 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 01:11:24,640 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:11:24,641 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:11:24,642 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:11:24,642 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:11:24,643 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:11:24,643 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:11:24,645 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:11:24,664 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:11:24,664 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:11:24,664 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:11:24,665 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:11:24,666 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:11:24,667 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:11:24,667 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:11:24,667 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:11:24,667 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:11:24,667 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:11:24,668 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:11:24,668 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:11:24,668 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:11:24,668 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:11:24,668 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:11:24,668 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:11:24,671 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:11:24,673 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:11:24,673 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:11:24,722 INFO ]: Repository-Root is: /tmp [2018-06-22 01:11:24,736 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:11:24,741 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:11:24,743 INFO ]: Initializing SmtParser... [2018-06-22 01:11:24,744 INFO ]: SmtParser initialized [2018-06-22 01:11:24,744 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/llreve/fib_merged_safe.c-1.smt2 [2018-06-22 01:11:24,746 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 01:11:24,840 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/fib_merged_safe.c-1.smt2 unknown [2018-06-22 01:11:24,983 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/fib_merged_safe.c-1.smt2 [2018-06-22 01:11:24,990 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:11:24,996 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:11:24,996 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:11:24,996 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:11:24,996 INFO ]: ChcToBoogie initialized [2018-06-22 01:11:25,001 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:11:24" (1/1) ... [2018-06-22 01:11:25,057 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:11:25 Unit [2018-06-22 01:11:25,057 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:11:25,057 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:11:25,058 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:11:25,058 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:11:25,079 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:11:25" (1/1) ... [2018-06-22 01:11:25,079 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:11:25" (1/1) ... [2018-06-22 01:11:25,085 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:11:25" (1/1) ... [2018-06-22 01:11:25,085 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:11:25" (1/1) ... [2018-06-22 01:11:25,087 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:11:25" (1/1) ... [2018-06-22 01:11:25,089 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:11:25" (1/1) ... [2018-06-22 01:11:25,090 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:11:25" (1/1) ... [2018-06-22 01:11:25,092 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:11:25,092 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:11:25,092 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:11:25,092 INFO ]: RCFGBuilder initialized [2018-06-22 01:11:25,093 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:11:25" (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 01:11:25,108 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:11:25,108 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:11:25,108 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:11:25,108 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:11:25,108 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:11:25,108 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 01:11:25,377 INFO ]: Using library mode [2018-06-22 01:11:25,378 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:11:25 BoogieIcfgContainer [2018-06-22 01:11:25,378 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:11:25,388 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:11:25,388 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:11:25,391 INFO ]: TraceAbstraction initialized [2018-06-22 01:11:25,392 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:11:24" (1/3) ... [2018-06-22 01:11:25,393 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6414b939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:11:25, skipping insertion in model container [2018-06-22 01:11:25,393 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:11:25" (2/3) ... [2018-06-22 01:11:25,393 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6414b939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:11:25, skipping insertion in model container [2018-06-22 01:11:25,393 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:11:25" (3/3) ... [2018-06-22 01:11:25,395 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:11:25,411 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:11:25,420 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:11:25,456 INFO ]: Using default assertion order modulation [2018-06-22 01:11:25,457 INFO ]: Interprodecural is true [2018-06-22 01:11:25,457 INFO ]: Hoare is false [2018-06-22 01:11:25,457 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:11:25,457 INFO ]: Backedges is TWOTRACK [2018-06-22 01:11:25,457 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:11:25,457 INFO ]: Difference is false [2018-06-22 01:11:25,457 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:11:25,457 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:11:25,471 INFO ]: Start isEmpty. Operand 11 states. [2018-06-22 01:11:25,483 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:11:25,484 INFO ]: Found error trace [2018-06-22 01:11:25,486 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:11:25,486 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:11:25,490 INFO ]: Analyzing trace with hash 368908946, now seen corresponding path program 1 times [2018-06-22 01:11:25,491 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:11:25,492 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:11:25,526 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:25,526 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:11:25,526 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:25,580 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:25,788 WARN ]: Spent 100.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2018-06-22 01:11:25,843 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:25,845 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:11:25,845 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:11:25,847 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:11:25,858 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:11:25,858 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:11:25,860 INFO ]: Start difference. First operand 11 states. Second operand 4 states. [2018-06-22 01:11:26,058 WARN ]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-06-22 01:11:26,107 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:11:26,107 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-22 01:11:26,110 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:11:26,112 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 01:11:26,112 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:11:26,121 INFO ]: With dead ends: 12 [2018-06-22 01:11:26,121 INFO ]: Without dead ends: 12 [2018-06-22 01:11:26,125 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:11:26,152 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 01:11:26,170 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 11. [2018-06-22 01:11:26,171 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 01:11:26,171 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 01:11:26,173 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 01:11:26,174 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:11:26,174 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 01:11:26,174 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:11:26,174 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 01:11:26,174 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 01:11:26,174 INFO ]: Found error trace [2018-06-22 01:11:26,174 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:11:26,174 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:11:26,174 INFO ]: Analyzing trace with hash -1938893459, now seen corresponding path program 1 times [2018-06-22 01:11:26,174 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:11:26,174 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:11:26,175 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:26,175 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:11:26,175 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:26,211 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:26,372 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:26,372 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:11:26,372 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 01:11:26,379 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:11:26,427 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:26,438 INFO ]: Computing forward predicates... [2018-06-22 01:11:26,569 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:26,589 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:11:26,590 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-06-22 01:11:26,590 INFO ]: Interpolant automaton has 6 states [2018-06-22 01:11:26,590 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 01:11:26,590 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 01:11:26,591 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-06-22 01:11:26,743 WARN ]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-06-22 01:11:26,836 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:11:26,836 INFO ]: Finished difference Result 14 states and 14 transitions. [2018-06-22 01:11:26,836 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 01:11:26,836 INFO ]: Start accepts. Automaton has 6 states. Word has length 10 [2018-06-22 01:11:26,837 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:11:26,838 INFO ]: With dead ends: 14 [2018-06-22 01:11:26,838 INFO ]: Without dead ends: 14 [2018-06-22 01:11:26,838 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-06-22 01:11:26,839 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-22 01:11:26,840 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 13. [2018-06-22 01:11:26,840 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 01:11:26,841 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 01:11:26,841 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-22 01:11:26,841 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:11:26,841 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 01:11:26,841 INFO ]: Interpolant automaton has 6 states. [2018-06-22 01:11:26,841 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 01:11:26,841 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 01:11:26,841 INFO ]: Found error trace [2018-06-22 01:11:26,841 INFO ]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:11:26,841 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:11:26,842 INFO ]: Analyzing trace with hash 761087368, now seen corresponding path program 2 times [2018-06-22 01:11:26,842 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:11:26,842 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:11:26,842 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:26,842 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:11:26,842 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:26,879 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:27,142 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:27,143 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:11:27,143 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 01:11:27,151 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 01:11:27,178 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 01:11:27,178 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:27,182 INFO ]: Computing forward predicates... [2018-06-22 01:11:27,239 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:27,273 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:11:27,273 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-06-22 01:11:27,273 INFO ]: Interpolant automaton has 8 states [2018-06-22 01:11:27,273 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 01:11:27,273 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-22 01:11:27,274 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 8 states. [2018-06-22 01:11:27,686 WARN ]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-06-22 01:11:27,956 WARN ]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-06-22 01:11:28,094 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:11:28,094 INFO ]: Finished difference Result 16 states and 16 transitions. [2018-06-22 01:11:28,095 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 01:11:28,095 INFO ]: Start accepts. Automaton has 8 states. Word has length 12 [2018-06-22 01:11:28,095 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:11:28,095 INFO ]: With dead ends: 16 [2018-06-22 01:11:28,095 INFO ]: Without dead ends: 16 [2018-06-22 01:11:28,095 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-06-22 01:11:28,096 INFO ]: Start minimizeSevpa. Operand 16 states. [2018-06-22 01:11:28,097 INFO ]: Finished minimizeSevpa. Reduced states from 16 to 15. [2018-06-22 01:11:28,097 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 01:11:28,098 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-06-22 01:11:28,098 INFO ]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-06-22 01:11:28,098 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:11:28,098 INFO ]: Abstraction has 15 states and 15 transitions. [2018-06-22 01:11:28,098 INFO ]: Interpolant automaton has 8 states. [2018-06-22 01:11:28,098 INFO ]: Start isEmpty. Operand 15 states and 15 transitions. [2018-06-22 01:11:28,098 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-22 01:11:28,098 INFO ]: Found error trace [2018-06-22 01:11:28,098 INFO ]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:11:28,098 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:11:28,098 INFO ]: Analyzing trace with hash 1282415331, now seen corresponding path program 3 times [2018-06-22 01:11:28,098 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:11:28,098 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:11:28,099 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:28,099 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:11:28,099 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:28,119 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:28,344 INFO ]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:28,344 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:11:28,344 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:11:28,358 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 01:11:28,392 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 01:11:28,392 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:28,396 INFO ]: Computing forward predicates... [2018-06-22 01:11:28,427 INFO ]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:28,451 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:11:28,451 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-06-22 01:11:28,451 INFO ]: Interpolant automaton has 10 states [2018-06-22 01:11:28,452 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 01:11:28,452 INFO ]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-06-22 01:11:28,452 INFO ]: Start difference. First operand 15 states and 15 transitions. Second operand 10 states. [2018-06-22 01:11:28,732 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:11:28,732 INFO ]: Finished difference Result 18 states and 18 transitions. [2018-06-22 01:11:28,733 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 01:11:28,733 INFO ]: Start accepts. Automaton has 10 states. Word has length 14 [2018-06-22 01:11:28,733 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:11:28,734 INFO ]: With dead ends: 18 [2018-06-22 01:11:28,734 INFO ]: Without dead ends: 18 [2018-06-22 01:11:28,734 INFO ]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2018-06-22 01:11:28,734 INFO ]: Start minimizeSevpa. Operand 18 states. [2018-06-22 01:11:28,736 INFO ]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-06-22 01:11:28,736 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 01:11:28,737 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-06-22 01:11:28,737 INFO ]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-06-22 01:11:28,737 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:11:28,737 INFO ]: Abstraction has 17 states and 17 transitions. [2018-06-22 01:11:28,737 INFO ]: Interpolant automaton has 10 states. [2018-06-22 01:11:28,737 INFO ]: Start isEmpty. Operand 17 states and 17 transitions. [2018-06-22 01:11:28,737 INFO ]: Finished isEmpty. Found accepting run of length 17 [2018-06-22 01:11:28,737 INFO ]: Found error trace [2018-06-22 01:11:28,737 INFO ]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:11:28,738 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:11:28,738 INFO ]: Analyzing trace with hash -232585858, now seen corresponding path program 4 times [2018-06-22 01:11:28,738 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:11:28,738 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:11:28,738 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:28,739 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:11:28,739 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:28,758 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:29,067 INFO ]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:29,067 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:11:29,067 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 01:11:29,077 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 01:11:29,103 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 01:11:29,103 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:29,107 INFO ]: Computing forward predicates... [2018-06-22 01:11:29,197 INFO ]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:29,225 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:11:29,225 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-06-22 01:11:29,225 INFO ]: Interpolant automaton has 12 states [2018-06-22 01:11:29,225 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 01:11:29,225 INFO ]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-06-22 01:11:29,225 INFO ]: Start difference. First operand 17 states and 17 transitions. Second operand 12 states. [2018-06-22 01:11:29,569 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:11:29,570 INFO ]: Finished difference Result 20 states and 20 transitions. [2018-06-22 01:11:29,570 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 01:11:29,570 INFO ]: Start accepts. Automaton has 12 states. Word has length 16 [2018-06-22 01:11:29,570 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:11:29,570 INFO ]: With dead ends: 20 [2018-06-22 01:11:29,570 INFO ]: Without dead ends: 20 [2018-06-22 01:11:29,571 INFO ]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2018-06-22 01:11:29,571 INFO ]: Start minimizeSevpa. Operand 20 states. [2018-06-22 01:11:29,572 INFO ]: Finished minimizeSevpa. Reduced states from 20 to 19. [2018-06-22 01:11:29,572 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 01:11:29,573 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-06-22 01:11:29,573 INFO ]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-06-22 01:11:29,573 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:11:29,573 INFO ]: Abstraction has 19 states and 19 transitions. [2018-06-22 01:11:29,573 INFO ]: Interpolant automaton has 12 states. [2018-06-22 01:11:29,573 INFO ]: Start isEmpty. Operand 19 states and 19 transitions. [2018-06-22 01:11:29,574 INFO ]: Finished isEmpty. Found accepting run of length 19 [2018-06-22 01:11:29,574 INFO ]: Found error trace [2018-06-22 01:11:29,574 INFO ]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:11:29,574 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:11:29,574 INFO ]: Analyzing trace with hash -154815143, now seen corresponding path program 5 times [2018-06-22 01:11:29,574 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:11:29,574 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:11:29,574 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:29,575 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:11:29,575 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:29,595 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:29,934 INFO ]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:29,934 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:11:29,934 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) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:11:29,941 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 01:11:30,040 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-22 01:11:30,040 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:30,045 INFO ]: Computing forward predicates... [2018-06-22 01:11:30,171 INFO ]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:30,203 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:11:30,203 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-06-22 01:11:30,203 INFO ]: Interpolant automaton has 14 states [2018-06-22 01:11:30,203 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 01:11:30,204 INFO ]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-06-22 01:11:30,204 INFO ]: Start difference. First operand 19 states and 19 transitions. Second operand 14 states. [2018-06-22 01:11:30,677 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:11:30,677 INFO ]: Finished difference Result 22 states and 22 transitions. [2018-06-22 01:11:30,680 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-22 01:11:30,680 INFO ]: Start accepts. Automaton has 14 states. Word has length 18 [2018-06-22 01:11:30,680 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:11:30,681 INFO ]: With dead ends: 22 [2018-06-22 01:11:30,681 INFO ]: Without dead ends: 22 [2018-06-22 01:11:30,681 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2018-06-22 01:11:30,681 INFO ]: Start minimizeSevpa. Operand 22 states. [2018-06-22 01:11:30,683 INFO ]: Finished minimizeSevpa. Reduced states from 22 to 21. [2018-06-22 01:11:30,683 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 01:11:30,683 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-06-22 01:11:30,683 INFO ]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-06-22 01:11:30,684 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:11:30,684 INFO ]: Abstraction has 21 states and 21 transitions. [2018-06-22 01:11:30,684 INFO ]: Interpolant automaton has 14 states. [2018-06-22 01:11:30,684 INFO ]: Start isEmpty. Operand 21 states and 21 transitions. [2018-06-22 01:11:30,684 INFO ]: Finished isEmpty. Found accepting run of length 21 [2018-06-22 01:11:30,684 INFO ]: Found error trace [2018-06-22 01:11:30,684 INFO ]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:11:30,684 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:11:30,684 INFO ]: Analyzing trace with hash 1568397940, now seen corresponding path program 6 times [2018-06-22 01:11:30,684 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:11:30,684 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:11:30,685 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:30,685 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:11:30,685 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:30,704 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:31,239 INFO ]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:31,240 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:11:31,240 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:11:31,247 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 01:11:31,291 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-06-22 01:11:31,291 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:31,296 INFO ]: Computing forward predicates... [2018-06-22 01:11:31,322 INFO ]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:31,354 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:11:31,354 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-06-22 01:11:31,354 INFO ]: Interpolant automaton has 16 states [2018-06-22 01:11:31,354 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 01:11:31,355 INFO ]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2018-06-22 01:11:31,355 INFO ]: Start difference. First operand 21 states and 21 transitions. Second operand 16 states. [2018-06-22 01:11:31,904 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:11:31,904 INFO ]: Finished difference Result 24 states and 24 transitions. [2018-06-22 01:11:31,905 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-06-22 01:11:31,905 INFO ]: Start accepts. Automaton has 16 states. Word has length 20 [2018-06-22 01:11:31,905 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:11:31,906 INFO ]: With dead ends: 24 [2018-06-22 01:11:31,906 INFO ]: Without dead ends: 24 [2018-06-22 01:11:31,906 INFO ]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2018-06-22 01:11:31,906 INFO ]: Start minimizeSevpa. Operand 24 states. [2018-06-22 01:11:31,908 INFO ]: Finished minimizeSevpa. Reduced states from 24 to 23. [2018-06-22 01:11:31,908 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 01:11:31,909 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-06-22 01:11:31,909 INFO ]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2018-06-22 01:11:31,909 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:11:31,909 INFO ]: Abstraction has 23 states and 23 transitions. [2018-06-22 01:11:31,909 INFO ]: Interpolant automaton has 16 states. [2018-06-22 01:11:31,909 INFO ]: Start isEmpty. Operand 23 states and 23 transitions. [2018-06-22 01:11:31,909 INFO ]: Finished isEmpty. Found accepting run of length 23 [2018-06-22 01:11:31,909 INFO ]: Found error trace [2018-06-22 01:11:31,909 INFO ]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:11:31,909 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:11:31,910 INFO ]: Analyzing trace with hash -281205553, now seen corresponding path program 7 times [2018-06-22 01:11:31,910 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:11:31,910 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:11:31,910 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:31,910 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:11:31,910 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:31,928 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:32,241 INFO ]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:32,242 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:11:32,242 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:11:32,250 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:11:32,301 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:32,310 INFO ]: Computing forward predicates... [2018-06-22 01:11:32,377 INFO ]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:32,397 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:11:32,397 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-06-22 01:11:32,397 INFO ]: Interpolant automaton has 18 states [2018-06-22 01:11:32,398 INFO ]: Constructing interpolant automaton starting with 18 interpolants. [2018-06-22 01:11:32,398 INFO ]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2018-06-22 01:11:32,398 INFO ]: Start difference. First operand 23 states and 23 transitions. Second operand 18 states. [2018-06-22 01:11:33,121 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:11:33,121 INFO ]: Finished difference Result 26 states and 26 transitions. [2018-06-22 01:11:33,213 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-06-22 01:11:33,213 INFO ]: Start accepts. Automaton has 18 states. Word has length 22 [2018-06-22 01:11:33,214 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:11:33,214 INFO ]: With dead ends: 26 [2018-06-22 01:11:33,214 INFO ]: Without dead ends: 26 [2018-06-22 01:11:33,215 INFO ]: 0 DeclaredPredicates, 54 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2018-06-22 01:11:33,215 INFO ]: Start minimizeSevpa. Operand 26 states. [2018-06-22 01:11:33,217 INFO ]: Finished minimizeSevpa. Reduced states from 26 to 25. [2018-06-22 01:11:33,217 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-22 01:11:33,218 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-06-22 01:11:33,218 INFO ]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2018-06-22 01:11:33,218 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:11:33,218 INFO ]: Abstraction has 25 states and 25 transitions. [2018-06-22 01:11:33,218 INFO ]: Interpolant automaton has 18 states. [2018-06-22 01:11:33,218 INFO ]: Start isEmpty. Operand 25 states and 25 transitions. [2018-06-22 01:11:33,219 INFO ]: Finished isEmpty. Found accepting run of length 25 [2018-06-22 01:11:33,219 INFO ]: Found error trace [2018-06-22 01:11:33,219 INFO ]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:11:33,219 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:11:33,219 INFO ]: Analyzing trace with hash 366298218, now seen corresponding path program 8 times [2018-06-22 01:11:33,219 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:11:33,219 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:11:33,220 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:33,220 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:11:33,220 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:33,253 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:33,647 INFO ]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:33,648 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:11:33,648 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:11:33,653 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 01:11:33,692 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 01:11:33,692 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:33,698 INFO ]: Computing forward predicates... [2018-06-22 01:11:33,731 INFO ]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:33,754 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:11:33,754 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-06-22 01:11:33,754 INFO ]: Interpolant automaton has 20 states [2018-06-22 01:11:33,754 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 01:11:33,754 INFO ]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2018-06-22 01:11:33,754 INFO ]: Start difference. First operand 25 states and 25 transitions. Second operand 20 states. [2018-06-22 01:11:34,361 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:11:34,361 INFO ]: Finished difference Result 28 states and 28 transitions. [2018-06-22 01:11:34,362 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-06-22 01:11:34,362 INFO ]: Start accepts. Automaton has 20 states. Word has length 24 [2018-06-22 01:11:34,362 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:11:34,362 INFO ]: With dead ends: 28 [2018-06-22 01:11:34,362 INFO ]: Without dead ends: 28 [2018-06-22 01:11:34,363 INFO ]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=105, Invalid=1227, Unknown=0, NotChecked=0, Total=1332 [2018-06-22 01:11:34,366 INFO ]: Start minimizeSevpa. Operand 28 states. [2018-06-22 01:11:34,368 INFO ]: Finished minimizeSevpa. Reduced states from 28 to 27. [2018-06-22 01:11:34,368 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-22 01:11:34,368 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-06-22 01:11:34,368 INFO ]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2018-06-22 01:11:34,368 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:11:34,368 INFO ]: Abstraction has 27 states and 27 transitions. [2018-06-22 01:11:34,368 INFO ]: Interpolant automaton has 20 states. [2018-06-22 01:11:34,369 INFO ]: Start isEmpty. Operand 27 states and 27 transitions. [2018-06-22 01:11:34,369 INFO ]: Finished isEmpty. Found accepting run of length 27 [2018-06-22 01:11:34,369 INFO ]: Found error trace [2018-06-22 01:11:34,369 INFO ]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:11:34,369 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:11:34,369 INFO ]: Analyzing trace with hash -152835771, now seen corresponding path program 9 times [2018-06-22 01:11:34,369 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:11:34,369 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:11:34,370 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:34,370 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:11:34,370 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:34,393 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:34,909 INFO ]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:34,909 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:11:34,909 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:11:34,915 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 01:11:34,979 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-06-22 01:11:34,979 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:34,986 INFO ]: Computing forward predicates... [2018-06-22 01:11:35,027 INFO ]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:35,060 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:11:35,060 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-06-22 01:11:35,060 INFO ]: Interpolant automaton has 22 states [2018-06-22 01:11:35,061 INFO ]: Constructing interpolant automaton starting with 22 interpolants. [2018-06-22 01:11:35,061 INFO ]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2018-06-22 01:11:35,061 INFO ]: Start difference. First operand 27 states and 27 transitions. Second operand 22 states. [2018-06-22 01:11:36,291 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:11:36,292 INFO ]: Finished difference Result 30 states and 30 transitions. [2018-06-22 01:11:36,292 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-06-22 01:11:36,292 INFO ]: Start accepts. Automaton has 22 states. Word has length 26 [2018-06-22 01:11:36,292 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:11:36,292 INFO ]: With dead ends: 30 [2018-06-22 01:11:36,292 INFO ]: Without dead ends: 30 [2018-06-22 01:11:36,293 INFO ]: 0 DeclaredPredicates, 66 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=117, Invalid=1523, Unknown=0, NotChecked=0, Total=1640 [2018-06-22 01:11:36,293 INFO ]: Start minimizeSevpa. Operand 30 states. [2018-06-22 01:11:36,295 INFO ]: Finished minimizeSevpa. Reduced states from 30 to 29. [2018-06-22 01:11:36,295 INFO ]: Start removeUnreachable. Operand 29 states. [2018-06-22 01:11:36,295 INFO ]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-06-22 01:11:36,295 INFO ]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2018-06-22 01:11:36,296 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:11:36,296 INFO ]: Abstraction has 29 states and 29 transitions. [2018-06-22 01:11:36,296 INFO ]: Interpolant automaton has 22 states. [2018-06-22 01:11:36,296 INFO ]: Start isEmpty. Operand 29 states and 29 transitions. [2018-06-22 01:11:36,296 INFO ]: Finished isEmpty. Found accepting run of length 29 [2018-06-22 01:11:36,296 INFO ]: Found error trace [2018-06-22 01:11:36,296 INFO ]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:11:36,296 INFO ]: === Iteration 11 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:11:36,296 INFO ]: Analyzing trace with hash -824392864, now seen corresponding path program 10 times [2018-06-22 01:11:36,296 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:11:36,296 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:11:36,297 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:36,297 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:11:36,297 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:36,316 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:37,681 INFO ]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:37,681 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:11:37,681 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:11:37,688 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 01:11:37,737 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 01:11:37,737 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:37,748 INFO ]: Computing forward predicates... [2018-06-22 01:11:37,774 INFO ]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:37,806 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:11:37,806 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-06-22 01:11:37,806 INFO ]: Interpolant automaton has 24 states [2018-06-22 01:11:37,806 INFO ]: Constructing interpolant automaton starting with 24 interpolants. [2018-06-22 01:11:37,806 INFO ]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2018-06-22 01:11:37,806 INFO ]: Start difference. First operand 29 states and 29 transitions. Second operand 24 states. [2018-06-22 01:11:38,911 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:11:38,911 INFO ]: Finished difference Result 32 states and 32 transitions. [2018-06-22 01:11:38,911 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-06-22 01:11:38,911 INFO ]: Start accepts. Automaton has 24 states. Word has length 28 [2018-06-22 01:11:38,911 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:11:38,911 INFO ]: With dead ends: 32 [2018-06-22 01:11:38,911 INFO ]: Without dead ends: 32 [2018-06-22 01:11:38,912 INFO ]: 0 DeclaredPredicates, 72 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=129, Invalid=1851, Unknown=0, NotChecked=0, Total=1980 [2018-06-22 01:11:38,912 INFO ]: Start minimizeSevpa. Operand 32 states. [2018-06-22 01:11:38,914 INFO ]: Finished minimizeSevpa. Reduced states from 32 to 31. [2018-06-22 01:11:38,914 INFO ]: Start removeUnreachable. Operand 31 states. [2018-06-22 01:11:38,914 INFO ]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-06-22 01:11:38,915 INFO ]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-06-22 01:11:38,915 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:11:38,915 INFO ]: Abstraction has 31 states and 31 transitions. [2018-06-22 01:11:38,915 INFO ]: Interpolant automaton has 24 states. [2018-06-22 01:11:38,915 INFO ]: Start isEmpty. Operand 31 states and 31 transitions. [2018-06-22 01:11:38,915 INFO ]: Finished isEmpty. Found accepting run of length 31 [2018-06-22 01:11:38,915 INFO ]: Found error trace [2018-06-22 01:11:38,915 INFO ]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:11:38,915 INFO ]: === Iteration 12 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:11:38,916 INFO ]: Analyzing trace with hash -1945664837, now seen corresponding path program 11 times [2018-06-22 01:11:38,916 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:11:38,916 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:11:38,916 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:38,916 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:11:38,916 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:38,939 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:39,518 INFO ]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:39,518 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:11:39,518 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:11:39,525 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 01:11:39,591 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-06-22 01:11:39,591 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:39,603 INFO ]: Computing forward predicates... [2018-06-22 01:11:39,636 INFO ]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:39,663 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:11:39,664 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-06-22 01:11:39,664 INFO ]: Interpolant automaton has 26 states [2018-06-22 01:11:39,664 INFO ]: Constructing interpolant automaton starting with 26 interpolants. [2018-06-22 01:11:39,665 INFO ]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2018-06-22 01:11:39,665 INFO ]: Start difference. First operand 31 states and 31 transitions. Second operand 26 states. [2018-06-22 01:11:40,645 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:11:40,645 INFO ]: Finished difference Result 34 states and 34 transitions. [2018-06-22 01:11:40,645 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-06-22 01:11:40,645 INFO ]: Start accepts. Automaton has 26 states. Word has length 30 [2018-06-22 01:11:40,645 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:11:40,646 INFO ]: With dead ends: 34 [2018-06-22 01:11:40,646 INFO ]: Without dead ends: 34 [2018-06-22 01:11:40,646 INFO ]: 0 DeclaredPredicates, 78 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=141, Invalid=2211, Unknown=0, NotChecked=0, Total=2352 [2018-06-22 01:11:40,646 INFO ]: Start minimizeSevpa. Operand 34 states. [2018-06-22 01:11:40,649 INFO ]: Finished minimizeSevpa. Reduced states from 34 to 33. [2018-06-22 01:11:40,649 INFO ]: Start removeUnreachable. Operand 33 states. [2018-06-22 01:11:40,649 INFO ]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-06-22 01:11:40,649 INFO ]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2018-06-22 01:11:40,650 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:11:40,650 INFO ]: Abstraction has 33 states and 33 transitions. [2018-06-22 01:11:40,650 INFO ]: Interpolant automaton has 26 states. [2018-06-22 01:11:40,650 INFO ]: Start isEmpty. Operand 33 states and 33 transitions. [2018-06-22 01:11:40,650 INFO ]: Finished isEmpty. Found accepting run of length 33 [2018-06-22 01:11:40,650 INFO ]: Found error trace [2018-06-22 01:11:40,650 INFO ]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:11:40,650 INFO ]: === Iteration 13 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:11:40,651 INFO ]: Analyzing trace with hash -1451239594, now seen corresponding path program 12 times [2018-06-22 01:11:40,651 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:11:40,651 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:11:40,652 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:40,652 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:11:40,652 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:40,674 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:41,443 INFO ]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:41,443 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:11:41,443 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:11:41,449 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 01:11:41,523 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-06-22 01:11:41,523 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:41,535 INFO ]: Computing forward predicates... [2018-06-22 01:11:41,582 INFO ]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:41,616 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:11:41,616 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-06-22 01:11:41,616 INFO ]: Interpolant automaton has 28 states [2018-06-22 01:11:41,616 INFO ]: Constructing interpolant automaton starting with 28 interpolants. [2018-06-22 01:11:41,616 INFO ]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2018-06-22 01:11:41,617 INFO ]: Start difference. First operand 33 states and 33 transitions. Second operand 28 states. [2018-06-22 01:11:42,770 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:11:42,770 INFO ]: Finished difference Result 36 states and 36 transitions. [2018-06-22 01:11:42,771 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-06-22 01:11:42,771 INFO ]: Start accepts. Automaton has 28 states. Word has length 32 [2018-06-22 01:11:42,771 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:11:42,772 INFO ]: With dead ends: 36 [2018-06-22 01:11:42,772 INFO ]: Without dead ends: 36 [2018-06-22 01:11:42,772 INFO ]: 0 DeclaredPredicates, 84 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=153, Invalid=2603, Unknown=0, NotChecked=0, Total=2756 [2018-06-22 01:11:42,773 INFO ]: Start minimizeSevpa. Operand 36 states. [2018-06-22 01:11:42,775 INFO ]: Finished minimizeSevpa. Reduced states from 36 to 35. [2018-06-22 01:11:42,775 INFO ]: Start removeUnreachable. Operand 35 states. [2018-06-22 01:11:42,775 INFO ]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-06-22 01:11:42,775 INFO ]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-06-22 01:11:42,775 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:11:42,775 INFO ]: Abstraction has 35 states and 35 transitions. [2018-06-22 01:11:42,775 INFO ]: Interpolant automaton has 28 states. [2018-06-22 01:11:42,776 INFO ]: Start isEmpty. Operand 35 states and 35 transitions. [2018-06-22 01:11:42,776 INFO ]: Finished isEmpty. Found accepting run of length 35 [2018-06-22 01:11:42,776 INFO ]: Found error trace [2018-06-22 01:11:42,776 INFO ]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:11:42,776 INFO ]: === Iteration 14 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:11:42,776 INFO ]: Analyzing trace with hash 1245016369, now seen corresponding path program 13 times [2018-06-22 01:11:42,776 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:11:42,776 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:11:42,777 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:42,777 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:11:42,777 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:42,802 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:43,429 INFO ]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:43,429 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:11:43,429 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:11:43,436 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:11:43,496 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:43,512 INFO ]: Computing forward predicates... [2018-06-22 01:11:43,540 INFO ]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:43,560 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:11:43,560 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-06-22 01:11:43,560 INFO ]: Interpolant automaton has 30 states [2018-06-22 01:11:43,560 INFO ]: Constructing interpolant automaton starting with 30 interpolants. [2018-06-22 01:11:43,561 INFO ]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2018-06-22 01:11:43,561 INFO ]: Start difference. First operand 35 states and 35 transitions. Second operand 30 states. [2018-06-22 01:11:45,078 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:11:45,078 INFO ]: Finished difference Result 38 states and 38 transitions. [2018-06-22 01:11:45,078 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-06-22 01:11:45,078 INFO ]: Start accepts. Automaton has 30 states. Word has length 34 [2018-06-22 01:11:45,079 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:11:45,079 INFO ]: With dead ends: 38 [2018-06-22 01:11:45,079 INFO ]: Without dead ends: 38 [2018-06-22 01:11:45,080 INFO ]: 0 DeclaredPredicates, 90 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=165, Invalid=3027, Unknown=0, NotChecked=0, Total=3192 [2018-06-22 01:11:45,080 INFO ]: Start minimizeSevpa. Operand 38 states. [2018-06-22 01:11:45,083 INFO ]: Finished minimizeSevpa. Reduced states from 38 to 37. [2018-06-22 01:11:45,083 INFO ]: Start removeUnreachable. Operand 37 states. [2018-06-22 01:11:45,083 INFO ]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-06-22 01:11:45,083 INFO ]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2018-06-22 01:11:45,084 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:11:45,084 INFO ]: Abstraction has 37 states and 37 transitions. [2018-06-22 01:11:45,084 INFO ]: Interpolant automaton has 30 states. [2018-06-22 01:11:45,084 INFO ]: Start isEmpty. Operand 37 states and 37 transitions. [2018-06-22 01:11:45,084 INFO ]: Finished isEmpty. Found accepting run of length 37 [2018-06-22 01:11:45,084 INFO ]: Found error trace [2018-06-22 01:11:45,084 INFO ]: trace histogram [15, 14, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:11:45,084 INFO ]: === Iteration 15 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:11:45,084 INFO ]: Analyzing trace with hash -1813249972, now seen corresponding path program 14 times [2018-06-22 01:11:45,084 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:11:45,084 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:11:45,085 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:45,085 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:11:45,085 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:45,110 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:45,821 INFO ]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:45,822 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:11:45,822 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:11:45,833 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 01:11:45,909 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 01:11:45,909 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:45,918 INFO ]: Computing forward predicates... [2018-06-22 01:11:45,945 INFO ]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:45,964 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:11:45,965 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-06-22 01:11:45,965 INFO ]: Interpolant automaton has 32 states [2018-06-22 01:11:45,965 INFO ]: Constructing interpolant automaton starting with 32 interpolants. [2018-06-22 01:11:45,965 INFO ]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2018-06-22 01:11:45,965 INFO ]: Start difference. First operand 37 states and 37 transitions. Second operand 32 states. [2018-06-22 01:11:46,392 WARN ]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-06-22 01:11:47,637 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:11:47,637 INFO ]: Finished difference Result 40 states and 40 transitions. [2018-06-22 01:11:47,637 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-06-22 01:11:47,637 INFO ]: Start accepts. Automaton has 32 states. Word has length 36 [2018-06-22 01:11:47,637 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:11:47,637 INFO ]: With dead ends: 40 [2018-06-22 01:11:47,637 INFO ]: Without dead ends: 40 [2018-06-22 01:11:47,639 INFO ]: 0 DeclaredPredicates, 96 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=177, Invalid=3483, Unknown=0, NotChecked=0, Total=3660 [2018-06-22 01:11:47,639 INFO ]: Start minimizeSevpa. Operand 40 states. [2018-06-22 01:11:47,641 INFO ]: Finished minimizeSevpa. Reduced states from 40 to 39. [2018-06-22 01:11:47,641 INFO ]: Start removeUnreachable. Operand 39 states. [2018-06-22 01:11:47,641 INFO ]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-06-22 01:11:47,641 INFO ]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2018-06-22 01:11:47,642 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:11:47,642 INFO ]: Abstraction has 39 states and 39 transitions. [2018-06-22 01:11:47,642 INFO ]: Interpolant automaton has 32 states. [2018-06-22 01:11:47,642 INFO ]: Start isEmpty. Operand 39 states and 39 transitions. [2018-06-22 01:11:47,642 INFO ]: Finished isEmpty. Found accepting run of length 39 [2018-06-22 01:11:47,642 INFO ]: Found error trace [2018-06-22 01:11:47,642 INFO ]: trace histogram [16, 15, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:11:47,642 INFO ]: === Iteration 16 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:11:47,642 INFO ]: Analyzing trace with hash 1245394087, now seen corresponding path program 15 times [2018-06-22 01:11:47,642 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:11:47,642 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:11:47,643 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:47,643 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:11:47,643 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:47,667 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:48,723 INFO ]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:48,723 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:11:48,723 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:11:48,728 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 01:11:48,830 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-06-22 01:11:48,830 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:48,840 INFO ]: Computing forward predicates... [2018-06-22 01:11:48,895 INFO ]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:48,926 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:11:48,926 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-06-22 01:11:48,926 INFO ]: Interpolant automaton has 34 states [2018-06-22 01:11:48,926 INFO ]: Constructing interpolant automaton starting with 34 interpolants. [2018-06-22 01:11:48,926 INFO ]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2018-06-22 01:11:48,926 INFO ]: Start difference. First operand 39 states and 39 transitions. Second operand 34 states. [2018-06-22 01:11:50,386 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:11:50,386 INFO ]: Finished difference Result 42 states and 42 transitions. [2018-06-22 01:11:50,387 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-06-22 01:11:50,387 INFO ]: Start accepts. Automaton has 34 states. Word has length 38 [2018-06-22 01:11:50,387 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:11:50,387 INFO ]: With dead ends: 42 [2018-06-22 01:11:50,387 INFO ]: Without dead ends: 42 [2018-06-22 01:11:50,389 INFO ]: 0 DeclaredPredicates, 102 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=189, Invalid=3971, Unknown=0, NotChecked=0, Total=4160 [2018-06-22 01:11:50,389 INFO ]: Start minimizeSevpa. Operand 42 states. [2018-06-22 01:11:50,391 INFO ]: Finished minimizeSevpa. Reduced states from 42 to 41. [2018-06-22 01:11:50,391 INFO ]: Start removeUnreachable. Operand 41 states. [2018-06-22 01:11:50,391 INFO ]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-06-22 01:11:50,391 INFO ]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38 [2018-06-22 01:11:50,392 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:11:50,392 INFO ]: Abstraction has 41 states and 41 transitions. [2018-06-22 01:11:50,392 INFO ]: Interpolant automaton has 34 states. [2018-06-22 01:11:50,392 INFO ]: Start isEmpty. Operand 41 states and 41 transitions. [2018-06-22 01:11:50,397 INFO ]: Finished isEmpty. Found accepting run of length 41 [2018-06-22 01:11:50,397 INFO ]: Found error trace [2018-06-22 01:11:50,397 INFO ]: trace histogram [17, 16, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:11:50,397 INFO ]: === Iteration 17 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:11:50,397 INFO ]: Analyzing trace with hash -1450262974, now seen corresponding path program 16 times [2018-06-22 01:11:50,397 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:11:50,397 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:11:50,398 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:50,398 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:11:50,398 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:50,423 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:51,748 INFO ]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:51,748 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:11:51,748 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:11:51,754 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 01:11:51,825 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 01:11:51,825 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:51,853 INFO ]: Computing forward predicates... [2018-06-22 01:11:51,899 INFO ]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:51,933 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:11:51,933 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-06-22 01:11:51,933 INFO ]: Interpolant automaton has 36 states [2018-06-22 01:11:51,933 INFO ]: Constructing interpolant automaton starting with 36 interpolants. [2018-06-22 01:11:51,934 INFO ]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2018-06-22 01:11:51,934 INFO ]: Start difference. First operand 41 states and 41 transitions. Second operand 36 states. [2018-06-22 01:11:53,031 WARN ]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-06-22 01:11:54,943 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:11:54,943 INFO ]: Finished difference Result 44 states and 44 transitions. [2018-06-22 01:11:54,944 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-06-22 01:11:54,944 INFO ]: Start accepts. Automaton has 36 states. Word has length 40 [2018-06-22 01:11:54,944 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:11:54,944 INFO ]: With dead ends: 44 [2018-06-22 01:11:54,944 INFO ]: Without dead ends: 44 [2018-06-22 01:11:54,946 INFO ]: 0 DeclaredPredicates, 108 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=201, Invalid=4491, Unknown=0, NotChecked=0, Total=4692 [2018-06-22 01:11:54,946 INFO ]: Start minimizeSevpa. Operand 44 states. [2018-06-22 01:11:54,947 INFO ]: Finished minimizeSevpa. Reduced states from 44 to 43. [2018-06-22 01:11:54,947 INFO ]: Start removeUnreachable. Operand 43 states. [2018-06-22 01:11:54,947 INFO ]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-06-22 01:11:54,947 INFO ]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2018-06-22 01:11:54,947 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:11:54,948 INFO ]: Abstraction has 43 states and 43 transitions. [2018-06-22 01:11:54,948 INFO ]: Interpolant automaton has 36 states. [2018-06-22 01:11:54,948 INFO ]: Start isEmpty. Operand 43 states and 43 transitions. [2018-06-22 01:11:54,948 INFO ]: Finished isEmpty. Found accepting run of length 43 [2018-06-22 01:11:54,948 INFO ]: Found error trace [2018-06-22 01:11:54,948 INFO ]: trace histogram [18, 17, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:11:54,948 INFO ]: === Iteration 18 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:11:54,948 INFO ]: Analyzing trace with hash -2111419107, now seen corresponding path program 17 times [2018-06-22 01:11:54,948 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:11:54,948 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:11:54,949 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:54,949 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:11:54,949 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:54,976 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:56,141 INFO ]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:56,141 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:11:56,161 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:11:56,175 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 01:11:56,293 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-06-22 01:11:56,293 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:56,313 INFO ]: Computing forward predicates... [2018-06-22 01:11:56,346 INFO ]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:56,379 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:11:56,379 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-06-22 01:11:56,379 INFO ]: Interpolant automaton has 38 states [2018-06-22 01:11:56,379 INFO ]: Constructing interpolant automaton starting with 38 interpolants. [2018-06-22 01:11:56,380 INFO ]: CoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2018-06-22 01:11:56,380 INFO ]: Start difference. First operand 43 states and 43 transitions. Second operand 38 states. [2018-06-22 01:11:58,260 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:11:58,260 INFO ]: Finished difference Result 46 states and 46 transitions. [2018-06-22 01:11:58,261 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-06-22 01:11:58,261 INFO ]: Start accepts. Automaton has 38 states. Word has length 42 [2018-06-22 01:11:58,261 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:11:58,261 INFO ]: With dead ends: 46 [2018-06-22 01:11:58,261 INFO ]: Without dead ends: 46 [2018-06-22 01:11:58,262 INFO ]: 0 DeclaredPredicates, 114 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=213, Invalid=5043, Unknown=0, NotChecked=0, Total=5256 [2018-06-22 01:11:58,262 INFO ]: Start minimizeSevpa. Operand 46 states. [2018-06-22 01:11:58,265 INFO ]: Finished minimizeSevpa. Reduced states from 46 to 45. [2018-06-22 01:11:58,265 INFO ]: Start removeUnreachable. Operand 45 states. [2018-06-22 01:11:58,265 INFO ]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-06-22 01:11:58,265 INFO ]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42 [2018-06-22 01:11:58,266 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:11:58,266 INFO ]: Abstraction has 45 states and 45 transitions. [2018-06-22 01:11:58,266 INFO ]: Interpolant automaton has 38 states. [2018-06-22 01:11:58,266 INFO ]: Start isEmpty. Operand 45 states and 45 transitions. [2018-06-22 01:11:58,266 INFO ]: Finished isEmpty. Found accepting run of length 45 [2018-06-22 01:11:58,266 INFO ]: Found error trace [2018-06-22 01:11:58,266 INFO ]: trace histogram [19, 18, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:11:58,266 INFO ]: === Iteration 19 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:11:58,266 INFO ]: Analyzing trace with hash -1827303112, now seen corresponding path program 18 times [2018-06-22 01:11:58,266 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:11:58,266 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:11:58,267 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:58,267 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:11:58,267 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:11:58,308 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:59,619 INFO ]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:59,619 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:11:59,619 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:11:59,630 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 01:11:59,741 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-06-22 01:11:59,741 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:11:59,753 INFO ]: Computing forward predicates... [2018-06-22 01:11:59,796 INFO ]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:11:59,817 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:11:59,817 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-06-22 01:11:59,817 INFO ]: Interpolant automaton has 40 states [2018-06-22 01:11:59,819 INFO ]: Constructing interpolant automaton starting with 40 interpolants. [2018-06-22 01:11:59,819 INFO ]: CoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2018-06-22 01:11:59,819 INFO ]: Start difference. First operand 45 states and 45 transitions. Second operand 40 states. [2018-06-22 01:12:01,844 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:12:01,844 INFO ]: Finished difference Result 48 states and 48 transitions. [2018-06-22 01:12:01,847 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-06-22 01:12:01,847 INFO ]: Start accepts. Automaton has 40 states. Word has length 44 [2018-06-22 01:12:01,847 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:12:01,847 INFO ]: With dead ends: 48 [2018-06-22 01:12:01,847 INFO ]: Without dead ends: 48 [2018-06-22 01:12:01,849 INFO ]: 0 DeclaredPredicates, 120 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=225, Invalid=5627, Unknown=0, NotChecked=0, Total=5852 [2018-06-22 01:12:01,849 INFO ]: Start minimizeSevpa. Operand 48 states. [2018-06-22 01:12:01,851 INFO ]: Finished minimizeSevpa. Reduced states from 48 to 47. [2018-06-22 01:12:01,851 INFO ]: Start removeUnreachable. Operand 47 states. [2018-06-22 01:12:01,852 INFO ]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-06-22 01:12:01,852 INFO ]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44 [2018-06-22 01:12:01,852 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:12:01,852 INFO ]: Abstraction has 47 states and 47 transitions. [2018-06-22 01:12:01,852 INFO ]: Interpolant automaton has 40 states. [2018-06-22 01:12:01,852 INFO ]: Start isEmpty. Operand 47 states and 47 transitions. [2018-06-22 01:12:01,853 INFO ]: Finished isEmpty. Found accepting run of length 47 [2018-06-22 01:12:01,853 INFO ]: Found error trace [2018-06-22 01:12:01,853 INFO ]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:12:01,853 INFO ]: === Iteration 20 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:12:01,853 INFO ]: Analyzing trace with hash 625228435, now seen corresponding path program 19 times [2018-06-22 01:12:01,853 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:12:01,853 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:12:01,854 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:12:01,854 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:12:01,854 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:12:01,888 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:12:03,335 INFO ]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:12:03,335 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:12:03,335 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:12:03,346 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:12:03,428 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:12:03,496 INFO ]: Computing forward predicates... [2018-06-22 01:12:03,549 INFO ]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:12:03,569 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:12:03,569 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-06-22 01:12:03,569 INFO ]: Interpolant automaton has 42 states [2018-06-22 01:12:03,569 INFO ]: Constructing interpolant automaton starting with 42 interpolants. [2018-06-22 01:12:03,570 INFO ]: CoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2018-06-22 01:12:03,570 INFO ]: Start difference. First operand 47 states and 47 transitions. Second operand 42 states. [2018-06-22 01:12:05,834 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:12:05,834 INFO ]: Finished difference Result 50 states and 50 transitions. [2018-06-22 01:12:05,837 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-06-22 01:12:05,837 INFO ]: Start accepts. Automaton has 42 states. Word has length 46 [2018-06-22 01:12:05,837 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:12:05,837 INFO ]: With dead ends: 50 [2018-06-22 01:12:05,837 INFO ]: Without dead ends: 50 [2018-06-22 01:12:05,838 INFO ]: 0 DeclaredPredicates, 126 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=237, Invalid=6243, Unknown=0, NotChecked=0, Total=6480 [2018-06-22 01:12:05,838 INFO ]: Start minimizeSevpa. Operand 50 states. [2018-06-22 01:12:05,840 INFO ]: Finished minimizeSevpa. Reduced states from 50 to 49. [2018-06-22 01:12:05,840 INFO ]: Start removeUnreachable. Operand 49 states. [2018-06-22 01:12:05,841 INFO ]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-06-22 01:12:05,841 INFO ]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46 [2018-06-22 01:12:05,841 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:12:05,841 INFO ]: Abstraction has 49 states and 49 transitions. [2018-06-22 01:12:05,841 INFO ]: Interpolant automaton has 42 states. [2018-06-22 01:12:05,841 INFO ]: Start isEmpty. Operand 49 states and 49 transitions. [2018-06-22 01:12:05,842 INFO ]: Finished isEmpty. Found accepting run of length 49 [2018-06-22 01:12:05,842 INFO ]: Found error trace [2018-06-22 01:12:05,842 INFO ]: trace histogram [21, 20, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:12:05,842 INFO ]: === Iteration 21 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:12:05,842 INFO ]: Analyzing trace with hash -429000402, now seen corresponding path program 20 times [2018-06-22 01:12:05,842 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:12:05,842 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:12:05,843 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:12:05,843 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:12:05,843 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:12:05,876 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:12:07,194 INFO ]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:12:07,194 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:12:07,283 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:12:07,288 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 01:12:07,385 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 01:12:07,385 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:12:07,400 INFO ]: Computing forward predicates... [2018-06-22 01:12:07,439 INFO ]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:12:07,464 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:12:07,464 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-06-22 01:12:07,464 INFO ]: Interpolant automaton has 44 states [2018-06-22 01:12:07,464 INFO ]: Constructing interpolant automaton starting with 44 interpolants. [2018-06-22 01:12:07,464 INFO ]: CoverageRelationStatistics Valid=85, Invalid=1807, Unknown=0, NotChecked=0, Total=1892 [2018-06-22 01:12:07,465 INFO ]: Start difference. First operand 49 states and 49 transitions. Second operand 44 states. [2018-06-22 01:12:09,904 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:12:09,904 INFO ]: Finished difference Result 52 states and 52 transitions. [2018-06-22 01:12:09,904 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-06-22 01:12:09,904 INFO ]: Start accepts. Automaton has 44 states. Word has length 48 [2018-06-22 01:12:09,905 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:12:09,905 INFO ]: With dead ends: 52 [2018-06-22 01:12:09,905 INFO ]: Without dead ends: 52 [2018-06-22 01:12:09,905 INFO ]: 0 DeclaredPredicates, 132 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=249, Invalid=6891, Unknown=0, NotChecked=0, Total=7140 [2018-06-22 01:12:09,906 INFO ]: Start minimizeSevpa. Operand 52 states. [2018-06-22 01:12:09,908 INFO ]: Finished minimizeSevpa. Reduced states from 52 to 51. [2018-06-22 01:12:09,908 INFO ]: Start removeUnreachable. Operand 51 states. [2018-06-22 01:12:09,908 INFO ]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-06-22 01:12:09,908 INFO ]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-06-22 01:12:09,908 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:12:09,908 INFO ]: Abstraction has 51 states and 51 transitions. [2018-06-22 01:12:09,908 INFO ]: Interpolant automaton has 44 states. [2018-06-22 01:12:09,908 INFO ]: Start isEmpty. Operand 51 states and 51 transitions. [2018-06-22 01:12:09,911 INFO ]: Finished isEmpty. Found accepting run of length 51 [2018-06-22 01:12:09,911 INFO ]: Found error trace [2018-06-22 01:12:09,911 INFO ]: trace histogram [22, 21, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:12:09,911 INFO ]: === Iteration 22 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:12:09,911 INFO ]: Analyzing trace with hash 69369097, now seen corresponding path program 21 times [2018-06-22 01:12:09,911 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:12:09,911 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:12:09,912 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:12:09,912 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:12:09,912 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:12:09,950 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:12:11,406 INFO ]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:12:11,406 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:12:11,406 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:12:11,412 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 01:12:11,549 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-06-22 01:12:11,549 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:12:11,564 INFO ]: Computing forward predicates... [2018-06-22 01:12:11,621 INFO ]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:12:11,640 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:12:11,640 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-06-22 01:12:11,641 INFO ]: Interpolant automaton has 46 states [2018-06-22 01:12:11,641 INFO ]: Constructing interpolant automaton starting with 46 interpolants. [2018-06-22 01:12:11,641 INFO ]: CoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2018-06-22 01:12:11,641 INFO ]: Start difference. First operand 51 states and 51 transitions. Second operand 46 states. [2018-06-22 01:12:14,287 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:12:14,287 INFO ]: Finished difference Result 54 states and 54 transitions. [2018-06-22 01:12:14,288 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-06-22 01:12:14,288 INFO ]: Start accepts. Automaton has 46 states. Word has length 50 [2018-06-22 01:12:14,288 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:12:14,288 INFO ]: With dead ends: 54 [2018-06-22 01:12:14,288 INFO ]: Without dead ends: 54 [2018-06-22 01:12:14,289 INFO ]: 0 DeclaredPredicates, 138 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=261, Invalid=7571, Unknown=0, NotChecked=0, Total=7832 [2018-06-22 01:12:14,289 INFO ]: Start minimizeSevpa. Operand 54 states. [2018-06-22 01:12:14,291 INFO ]: Finished minimizeSevpa. Reduced states from 54 to 53. [2018-06-22 01:12:14,291 INFO ]: Start removeUnreachable. Operand 53 states. [2018-06-22 01:12:14,293 INFO ]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-06-22 01:12:14,293 INFO ]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2018-06-22 01:12:14,293 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:12:14,293 INFO ]: Abstraction has 53 states and 53 transitions. [2018-06-22 01:12:14,293 INFO ]: Interpolant automaton has 46 states. [2018-06-22 01:12:14,293 INFO ]: Start isEmpty. Operand 53 states and 53 transitions. [2018-06-22 01:12:14,293 INFO ]: Finished isEmpty. Found accepting run of length 53 [2018-06-22 01:12:14,293 INFO ]: Found error trace [2018-06-22 01:12:14,293 INFO ]: trace histogram [23, 22, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:12:14,293 INFO ]: === Iteration 23 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:12:14,293 INFO ]: Analyzing trace with hash -2033879516, now seen corresponding path program 22 times [2018-06-22 01:12:14,294 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:12:14,294 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:12:14,294 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:12:14,294 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:12:14,294 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:12:14,326 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:12:15,972 INFO ]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:12:15,972 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:12:15,972 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:12:15,978 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 01:12:16,079 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 01:12:16,079 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:12:16,198 INFO ]: Computing forward predicates... [2018-06-22 01:12:16,245 INFO ]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:12:16,265 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:12:16,265 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-06-22 01:12:16,265 INFO ]: Interpolant automaton has 48 states [2018-06-22 01:12:16,265 INFO ]: Constructing interpolant automaton starting with 48 interpolants. [2018-06-22 01:12:16,266 INFO ]: CoverageRelationStatistics Valid=93, Invalid=2163, Unknown=0, NotChecked=0, Total=2256 [2018-06-22 01:12:16,266 INFO ]: Start difference. First operand 53 states and 53 transitions. Second operand 48 states. [2018-06-22 01:12:19,223 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:12:19,224 INFO ]: Finished difference Result 56 states and 56 transitions. [2018-06-22 01:12:19,224 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-06-22 01:12:19,224 INFO ]: Start accepts. Automaton has 48 states. Word has length 52 [2018-06-22 01:12:19,224 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:12:19,224 INFO ]: With dead ends: 56 [2018-06-22 01:12:19,224 INFO ]: Without dead ends: 56 [2018-06-22 01:12:19,225 INFO ]: 0 DeclaredPredicates, 144 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=273, Invalid=8283, Unknown=0, NotChecked=0, Total=8556 [2018-06-22 01:12:19,225 INFO ]: Start minimizeSevpa. Operand 56 states. [2018-06-22 01:12:19,226 INFO ]: Finished minimizeSevpa. Reduced states from 56 to 55. [2018-06-22 01:12:19,227 INFO ]: Start removeUnreachable. Operand 55 states. [2018-06-22 01:12:19,227 INFO ]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-06-22 01:12:19,227 INFO ]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52 [2018-06-22 01:12:19,227 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:12:19,227 INFO ]: Abstraction has 55 states and 55 transitions. [2018-06-22 01:12:19,227 INFO ]: Interpolant automaton has 48 states. [2018-06-22 01:12:19,227 INFO ]: Start isEmpty. Operand 55 states and 55 transitions. [2018-06-22 01:12:19,228 INFO ]: Finished isEmpty. Found accepting run of length 55 [2018-06-22 01:12:19,228 INFO ]: Found error trace [2018-06-22 01:12:19,228 INFO ]: trace histogram [24, 23, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:12:19,232 INFO ]: === Iteration 24 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:12:19,232 INFO ]: Analyzing trace with hash -326200193, now seen corresponding path program 23 times [2018-06-22 01:12:19,232 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:12:19,232 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:12:19,232 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:12:19,232 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:12:19,232 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:12:19,272 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:12:21,703 INFO ]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:12:21,703 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:12:21,703 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:12:21,708 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 01:12:21,962 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-06-22 01:12:21,962 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:12:22,051 INFO ]: Computing forward predicates... [2018-06-22 01:12:22,084 INFO ]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:12:22,105 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:12:22,105 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-06-22 01:12:22,106 INFO ]: Interpolant automaton has 50 states [2018-06-22 01:12:22,106 INFO ]: Constructing interpolant automaton starting with 50 interpolants. [2018-06-22 01:12:22,106 INFO ]: CoverageRelationStatistics Valid=97, Invalid=2353, Unknown=0, NotChecked=0, Total=2450 [2018-06-22 01:12:22,106 INFO ]: Start difference. First operand 55 states and 55 transitions. Second operand 50 states. [2018-06-22 01:12:25,400 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:12:25,400 INFO ]: Finished difference Result 58 states and 58 transitions. [2018-06-22 01:12:25,400 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-06-22 01:12:25,400 INFO ]: Start accepts. Automaton has 50 states. Word has length 54 [2018-06-22 01:12:25,400 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:12:25,400 INFO ]: With dead ends: 58 [2018-06-22 01:12:25,400 INFO ]: Without dead ends: 58 [2018-06-22 01:12:25,401 INFO ]: 0 DeclaredPredicates, 150 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=285, Invalid=9027, Unknown=0, NotChecked=0, Total=9312 [2018-06-22 01:12:25,401 INFO ]: Start minimizeSevpa. Operand 58 states. [2018-06-22 01:12:25,403 INFO ]: Finished minimizeSevpa. Reduced states from 58 to 57. [2018-06-22 01:12:25,403 INFO ]: Start removeUnreachable. Operand 57 states. [2018-06-22 01:12:25,403 INFO ]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-06-22 01:12:25,404 INFO ]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54 [2018-06-22 01:12:25,404 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:12:25,404 INFO ]: Abstraction has 57 states and 57 transitions. [2018-06-22 01:12:25,404 INFO ]: Interpolant automaton has 50 states. [2018-06-22 01:12:25,404 INFO ]: Start isEmpty. Operand 57 states and 57 transitions. [2018-06-22 01:12:25,404 INFO ]: Finished isEmpty. Found accepting run of length 57 [2018-06-22 01:12:25,404 INFO ]: Found error trace [2018-06-22 01:12:25,404 INFO ]: trace histogram [25, 24, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:12:25,404 INFO ]: === Iteration 25 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:12:25,404 INFO ]: Analyzing trace with hash 76122138, now seen corresponding path program 24 times [2018-06-22 01:12:25,404 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:12:25,404 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:12:25,405 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:12:25,405 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:12:25,405 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:12:25,456 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:12:27,326 INFO ]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:12:27,326 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:12:27,326 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:12:27,331 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 01:12:27,486 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-06-22 01:12:27,486 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:12:27,506 INFO ]: Computing forward predicates... [2018-06-22 01:12:27,672 INFO ]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:12:27,704 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:12:27,704 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-06-22 01:12:27,704 INFO ]: Interpolant automaton has 52 states [2018-06-22 01:12:27,704 INFO ]: Constructing interpolant automaton starting with 52 interpolants. [2018-06-22 01:12:27,704 INFO ]: CoverageRelationStatistics Valid=101, Invalid=2551, Unknown=0, NotChecked=0, Total=2652 [2018-06-22 01:12:27,704 INFO ]: Start difference. First operand 57 states and 57 transitions. Second operand 52 states. Received shutdown request... [2018-06-22 01:12:28,616 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:12:28,616 WARN ]: Verification canceled [2018-06-22 01:12:28,621 WARN ]: Timeout [2018-06-22 01:12:28,622 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:12:28 BoogieIcfgContainer [2018-06-22 01:12:28,622 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:12:28,622 INFO ]: Toolchain (without parser) took 63632.29 ms. Allocated memory was 309.3 MB in the beginning and 690.0 MB in the end (delta: 380.6 MB). Free memory was 265.7 MB in the beginning and 507.2 MB in the end (delta: -241.5 MB). Peak memory consumption was 139.1 MB. Max. memory is 3.6 GB. [2018-06-22 01:12:28,623 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:12:28,623 INFO ]: ChcToBoogie took 60.89 ms. Allocated memory is still 309.3 MB. Free memory was 265.7 MB in the beginning and 263.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:12:28,624 INFO ]: Boogie Preprocessor took 34.13 ms. Allocated memory is still 309.3 MB. Free memory was 263.7 MB in the beginning and 262.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 01:12:28,626 INFO ]: RCFGBuilder took 285.55 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 254.7 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:12:28,626 INFO ]: TraceAbstraction took 63233.36 ms. Allocated memory was 309.3 MB in the beginning and 690.0 MB in the end (delta: 380.6 MB). Free memory was 253.7 MB in the beginning and 507.2 MB in the end (delta: -253.5 MB). Peak memory consumption was 127.1 MB. Max. memory is 3.6 GB. [2018-06-22 01:12:28,628 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 60.89 ms. Allocated memory is still 309.3 MB. Free memory was 265.7 MB in the beginning and 263.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 34.13 ms. Allocated memory is still 309.3 MB. Free memory was 263.7 MB in the beginning and 262.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 285.55 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 254.7 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 63233.36 ms. Allocated memory was 309.3 MB in the beginning and 690.0 MB in the end (delta: 380.6 MB). Free memory was 253.7 MB in the beginning and 507.2 MB in the end (delta: -253.5 MB). Peak memory consumption was 127.1 MB. 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 (57states) and interpolant automaton (currently 3 states, 52 states before enhancement), while PredicateComparison was comparing new predicate (quantifier-free) to 52 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 11 locations, 1 error locations. TIMEOUT Result, 63.1s OverallTime, 25 OverallIterations, 25 TraceHistogramMax, 35.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 195 SDtfs, 25 SDslu, 3725 SDs, 0 SdLazy, 20274 SolverSat, 576 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2045 GetRequests, 770 SyntacticMatches, 48 SemanticMatches, 1226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8924 ImplicationChecksByTransitivity, 40.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=24, 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, 24 MinimizatonAttempts, 24 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 24.1s InterpolantComputationTime, 1592 NumberOfCodeBlocks, 1592 NumberOfCodeBlocksAsserted, 217 NumberOfCheckSat, 1543 ConstructedInterpolants, 0 QuantifiedInterpolants, 1589675 SizeOfPredicates, 2592 NumberOfNonLiveVariables, 13548 ConjunctsInSsa, 6648 ConjunctsInUnsatCore, 49 InterpolantComputations, 1 PerfectInterpolantSequences, 0/10400 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/fib_merged_safe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-12-28-640.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/fib_merged_safe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-12-28-640.csv Completed graceful shutdown