java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/sally-chc-benchmarks/misc/inc_cas_prop2.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 12:37:45,616 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 12:37:45,618 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 12:37:45,631 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 12:37:45,631 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 12:37:45,632 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 12:37:45,633 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 12:37:45,637 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 12:37:45,638 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 12:37:45,640 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 12:37:45,641 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 12:37:45,641 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 12:37:45,642 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 12:37:45,643 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 12:37:45,646 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 12:37:45,646 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 12:37:45,648 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 12:37:45,657 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 12:37:45,658 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 12:37:45,659 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 12:37:45,660 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 12:37:45,665 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 12:37:45,665 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 12:37:45,665 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 12:37:45,666 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 12:37:45,669 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 12:37:45,670 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 12:37:45,671 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 12:37:45,672 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 12:37:45,672 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 12:37:45,672 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 12:37:45,676 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 12:37:45,676 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 12:37:45,677 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 12:37:45,677 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 12:37:45,677 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 12:37:45,697 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 12:37:45,698 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 12:37:45,698 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 12:37:45,698 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 12:37:45,699 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 12:37:45,699 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 12:37:45,700 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 12:37:45,701 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 12:37:45,701 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 12:37:45,701 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 12:37:45,701 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 12:37:45,701 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 12:37:45,702 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 12:37:45,702 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 12:37:45,702 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 12:37:45,702 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 12:37:45,702 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 12:37:45,702 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 12:37:45,703 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 12:37:45,705 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 12:37:45,705 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 12:37:45,752 INFO ]: Repository-Root is: /tmp [2018-06-22 12:37:45,768 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 12:37:45,774 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 12:37:45,775 INFO ]: Initializing SmtParser... [2018-06-22 12:37:45,775 INFO ]: SmtParser initialized [2018-06-22 12:37:45,776 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/sally-chc-benchmarks/misc/inc_cas_prop2.smt2 [2018-06-22 12:37:45,778 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 12:37:45,865 INFO ]: Executing SMT file /storage/chc-comp/sally-chc-benchmarks/misc/inc_cas_prop2.smt2 unknown [2018-06-22 12:37:46,046 INFO ]: Succesfully executed SMT file /storage/chc-comp/sally-chc-benchmarks/misc/inc_cas_prop2.smt2 [2018-06-22 12:37:46,052 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 12:37:46,061 INFO ]: Walking toolchain with 4 elements. [2018-06-22 12:37:46,062 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 12:37:46,062 INFO ]: Initializing ChcToBoogie... [2018-06-22 12:37:46,062 INFO ]: ChcToBoogie initialized [2018-06-22 12:37:46,065 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:37:46" (1/1) ... [2018-06-22 12:37:46,119 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:37:46 Unit [2018-06-22 12:37:46,119 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 12:37:46,120 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 12:37:46,120 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 12:37:46,120 INFO ]: Boogie Preprocessor initialized [2018-06-22 12:37:46,142 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:37:46" (1/1) ... [2018-06-22 12:37:46,143 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:37:46" (1/1) ... [2018-06-22 12:37:46,150 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:37:46" (1/1) ... [2018-06-22 12:37:46,150 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:37:46" (1/1) ... [2018-06-22 12:37:46,154 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:37:46" (1/1) ... [2018-06-22 12:37:46,155 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:37:46" (1/1) ... [2018-06-22 12:37:46,156 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:37:46" (1/1) ... [2018-06-22 12:37:46,157 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 12:37:46,166 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 12:37:46,166 INFO ]: Initializing RCFGBuilder... [2018-06-22 12:37:46,166 INFO ]: RCFGBuilder initialized [2018-06-22 12:37:46,167 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:37:46" (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 12:37:46,180 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 12:37:46,180 INFO ]: Found specification of procedure False [2018-06-22 12:37:46,180 INFO ]: Found implementation of procedure False [2018-06-22 12:37:46,180 INFO ]: Specification and implementation of procedure invariant given in one single declaration [2018-06-22 12:37:46,180 INFO ]: Found specification of procedure invariant [2018-06-22 12:37:46,180 INFO ]: Found implementation of procedure invariant [2018-06-22 12:37:46,180 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 12:37:46,180 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 12:37:46,180 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 12:37:46,370 INFO ]: Using library mode [2018-06-22 12:37:46,371 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:37:46 BoogieIcfgContainer [2018-06-22 12:37:46,371 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 12:37:46,372 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 12:37:46,372 INFO ]: Initializing TraceAbstraction... [2018-06-22 12:37:46,381 INFO ]: TraceAbstraction initialized [2018-06-22 12:37:46,381 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:37:46" (1/3) ... [2018-06-22 12:37:46,382 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d80f2c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 12:37:46, skipping insertion in model container [2018-06-22 12:37:46,382 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:37:46" (2/3) ... [2018-06-22 12:37:46,382 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d80f2c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 12:37:46, skipping insertion in model container [2018-06-22 12:37:46,383 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:37:46" (3/3) ... [2018-06-22 12:37:46,389 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 12:37:46,404 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 12:37:46,413 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 12:37:46,476 INFO ]: Using default assertion order modulation [2018-06-22 12:37:46,476 INFO ]: Interprodecural is true [2018-06-22 12:37:46,477 INFO ]: Hoare is false [2018-06-22 12:37:46,477 INFO ]: Compute interpolants for FPandBP [2018-06-22 12:37:46,477 INFO ]: Backedges is TWOTRACK [2018-06-22 12:37:46,477 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 12:37:46,477 INFO ]: Difference is false [2018-06-22 12:37:46,477 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 12:37:46,477 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 12:37:46,491 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 12:37:46,501 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 12:37:46,502 INFO ]: Found error trace [2018-06-22 12:37:46,502 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 12:37:46,503 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 12:37:46,508 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 12:37:46,510 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 12:37:46,510 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 12:37:46,548 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:37:46,548 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 12:37:46,548 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:37:46,581 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:37:46,660 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 12:37:46,662 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 12:37:46,662 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 12:37:46,663 INFO ]: Interpolant automaton has 4 states [2018-06-22 12:37:46,673 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 12:37:46,674 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 12:37:46,676 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 12:37:46,754 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 12:37:46,754 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 12:37:46,755 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 12:37:46,756 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 12:37:46,756 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 12:37:46,770 INFO ]: With dead ends: 13 [2018-06-22 12:37:46,770 INFO ]: Without dead ends: 13 [2018-06-22 12:37:46,772 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 12:37:46,785 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 12:37:46,807 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 12:37:46,809 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 12:37:46,809 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 12:37:46,811 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 12:37:46,811 INFO ]: Finished accepts. word is rejected. [2018-06-22 12:37:46,811 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 12:37:46,811 INFO ]: Interpolant automaton has 4 states. [2018-06-22 12:37:46,811 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 12:37:46,812 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 12:37:46,812 INFO ]: Found error trace [2018-06-22 12:37:46,812 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 12:37:46,813 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 12:37:46,813 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 12:37:46,813 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 12:37:46,813 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 12:37:46,814 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:37:46,814 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 12:37:46,814 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:37:46,848 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:37:47,034 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 12:37:47,034 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 12:37:47,034 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 12:37:47,045 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 12:37:47,092 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:37:47,101 INFO ]: Computing forward predicates... [2018-06-22 12:37:47,546 WARN ]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-22 12:37:47,621 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 12:37:47,643 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 12:37:47,643 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-22 12:37:47,643 INFO ]: Interpolant automaton has 7 states [2018-06-22 12:37:47,643 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 12:37:47,643 INFO ]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-06-22 12:37:47,644 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 7 states. [2018-06-22 12:37:48,230 WARN ]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-06-22 12:37:48,285 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 12:37:48,285 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 12:37:48,286 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 12:37:48,286 INFO ]: Start accepts. Automaton has 7 states. Word has length 13 [2018-06-22 12:37:48,286 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 12:37:48,287 INFO ]: With dead ends: 15 [2018-06-22 12:37:48,287 INFO ]: Without dead ends: 15 [2018-06-22 12:37:48,288 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-06-22 12:37:48,288 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 12:37:48,292 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 12:37:48,292 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 12:37:48,292 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 12:37:48,292 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 12:37:48,293 INFO ]: Finished accepts. word is rejected. [2018-06-22 12:37:48,293 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 12:37:48,293 INFO ]: Interpolant automaton has 7 states. [2018-06-22 12:37:48,293 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 12:37:48,293 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 12:37:48,293 INFO ]: Found error trace [2018-06-22 12:37:48,293 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 12:37:48,293 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 12:37:48,294 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 12:37:48,294 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 12:37:48,294 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 12:37:48,294 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:37:48,294 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 12:37:48,294 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:37:48,356 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:37:48,617 WARN ]: Spent 128.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2018-06-22 12:37:48,790 WARN ]: Spent 165.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2018-06-22 12:37:48,817 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 12:37:48,817 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 12:37:48,817 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 12:37:48,828 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 12:37:48,848 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 12:37:48,848 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:37:48,851 INFO ]: Computing forward predicates... [2018-06-22 12:37:49,213 WARN ]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-22 12:37:49,468 WARN ]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-06-22 12:37:49,506 INFO ]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 12:37:49,525 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 12:37:49,525 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2018-06-22 12:37:49,525 INFO ]: Interpolant automaton has 10 states [2018-06-22 12:37:49,525 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 12:37:49,525 INFO ]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-06-22 12:37:49,526 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 10 states. [2018-06-22 12:37:49,711 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 12:37:49,711 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 12:37:49,712 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 12:37:49,712 INFO ]: Start accepts. Automaton has 10 states. Word has length 17 [2018-06-22 12:37:49,712 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 12:37:49,713 INFO ]: With dead ends: 17 [2018-06-22 12:37:49,713 INFO ]: Without dead ends: 17 [2018-06-22 12:37:49,713 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2018-06-22 12:37:49,713 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 12:37:49,716 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 12:37:49,716 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 12:37:49,717 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 12:37:49,717 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 12:37:49,717 INFO ]: Finished accepts. word is rejected. [2018-06-22 12:37:49,717 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 12:37:49,717 INFO ]: Interpolant automaton has 10 states. [2018-06-22 12:37:49,717 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 12:37:49,718 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 12:37:49,718 INFO ]: Found error trace [2018-06-22 12:37:49,718 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 12:37:49,718 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 12:37:49,718 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 12:37:49,718 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 12:37:49,718 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 12:37:49,719 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:37:49,719 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 12:37:49,719 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:37:49,754 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:37:50,109 WARN ]: Spent 106.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2018-06-22 12:37:50,322 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 12:37:50,322 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 12:37:50,322 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 12:37:50,341 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 12:37:50,386 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 12:37:50,386 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:37:50,390 INFO ]: Computing forward predicates... [2018-06-22 12:37:50,526 WARN ]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-06-22 12:37:51,435 INFO ]: Checked inductivity of 21 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 12:37:51,458 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 12:37:51,458 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2018-06-22 12:37:51,458 INFO ]: Interpolant automaton has 15 states [2018-06-22 12:37:51,458 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 12:37:51,459 INFO ]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2018-06-22 12:37:51,459 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 15 states. [2018-06-22 12:37:51,702 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 12:37:51,702 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 12:37:51,703 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 12:37:51,703 INFO ]: Start accepts. Automaton has 15 states. Word has length 21 [2018-06-22 12:37:51,703 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 12:37:51,704 INFO ]: With dead ends: 19 [2018-06-22 12:37:51,704 INFO ]: Without dead ends: 19 [2018-06-22 12:37:51,704 INFO ]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2018-06-22 12:37:51,704 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 12:37:51,707 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 12:37:51,707 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 12:37:51,708 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 12:37:51,708 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 12:37:51,708 INFO ]: Finished accepts. word is rejected. [2018-06-22 12:37:51,708 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 12:37:51,708 INFO ]: Interpolant automaton has 15 states. [2018-06-22 12:37:51,708 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 12:37:51,709 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 12:37:51,709 INFO ]: Found error trace [2018-06-22 12:37:51,709 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 12:37:51,709 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 12:37:51,709 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-22 12:37:51,709 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 12:37:51,709 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 12:37:51,710 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:37:51,710 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 12:37:51,710 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:37:51,775 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:37:52,525 WARN ]: Spent 364.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2018-06-22 12:37:53,078 WARN ]: Spent 431.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2018-06-22 12:37:53,226 WARN ]: Spent 131.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2018-06-22 12:37:53,446 WARN ]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2018-06-22 12:37:53,758 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 12:37:53,758 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 12:37:53,758 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 12:37:53,770 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 12:37:53,802 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 12:37:53,802 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:37:53,810 INFO ]: Computing forward predicates... [2018-06-22 12:37:54,435 WARN ]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2018-06-22 12:37:54,617 WARN ]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2018-06-22 12:37:54,805 WARN ]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2018-06-22 12:37:55,723 WARN ]: Spent 156.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2018-06-22 12:37:57,088 WARN ]: Spent 397.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2018-06-22 12:37:57,097 INFO ]: Checked inductivity of 36 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-22 12:37:57,116 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 12:37:57,117 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2018-06-22 12:37:57,117 INFO ]: Interpolant automaton has 20 states [2018-06-22 12:37:57,117 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 12:37:57,117 INFO ]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2018-06-22 12:37:57,117 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 20 states. [2018-06-22 12:37:57,418 WARN ]: Spent 207.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 60 [2018-06-22 12:37:57,792 WARN ]: Spent 328.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 82 [2018-06-22 12:37:58,297 WARN ]: Spent 471.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 88 [2018-06-22 12:37:58,606 WARN ]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2018-06-22 12:37:58,639 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 12:37:58,639 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 12:37:58,640 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 12:37:58,640 INFO ]: Start accepts. Automaton has 20 states. Word has length 25 [2018-06-22 12:37:58,640 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 12:37:58,641 INFO ]: With dead ends: 21 [2018-06-22 12:37:58,641 INFO ]: Without dead ends: 21 [2018-06-22 12:37:58,641 INFO ]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2018-06-22 12:37:58,641 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 12:37:58,644 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 12:37:58,644 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 12:37:58,644 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 12:37:58,644 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-22 12:37:58,644 INFO ]: Finished accepts. word is rejected. [2018-06-22 12:37:58,644 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 12:37:58,644 INFO ]: Interpolant automaton has 20 states. [2018-06-22 12:37:58,644 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 12:37:58,646 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 12:37:58,646 INFO ]: Found error trace [2018-06-22 12:37:58,646 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 12:37:58,646 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 12:37:58,646 INFO ]: Analyzing trace with hash 853117551, now seen corresponding path program 5 times [2018-06-22 12:37:58,646 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 12:37:58,646 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 12:37:58,647 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:37:58,647 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 12:37:58,647 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:37:58,697 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:37:59,400 WARN ]: Spent 195.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 38 [2018-06-22 12:37:59,757 WARN ]: Spent 344.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 101 [2018-06-22 12:38:00,301 WARN ]: Spent 511.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 93 [2018-06-22 12:38:01,042 WARN ]: Spent 600.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 82 [2018-06-22 12:38:01,422 WARN ]: Spent 152.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2018-06-22 12:38:01,660 WARN ]: Spent 205.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2018-06-22 12:38:01,805 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 12:38:01,805 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 12:38:01,805 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 12:38:01,814 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 12:38:01,851 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-22 12:38:01,851 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:38:01,858 INFO ]: Computing forward predicates... [2018-06-22 12:38:02,249 WARN ]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2018-06-22 12:38:03,260 WARN ]: Spent 173.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2018-06-22 12:38:04,408 WARN ]: Spent 305.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2018-06-22 12:38:05,053 INFO ]: Checked inductivity of 55 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-06-22 12:38:05,073 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 12:38:05,073 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 23 [2018-06-22 12:38:05,073 INFO ]: Interpolant automaton has 23 states [2018-06-22 12:38:05,073 INFO ]: Constructing interpolant automaton starting with 23 interpolants. [2018-06-22 12:38:05,073 INFO ]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2018-06-22 12:38:05,073 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 23 states. [2018-06-22 12:38:05,344 WARN ]: Spent 140.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 57 [2018-06-22 12:38:05,854 WARN ]: Spent 476.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 87 [2018-06-22 12:38:06,322 WARN ]: Spent 406.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 91 [2018-06-22 12:38:06,998 WARN ]: Spent 610.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 111 [2018-06-22 12:38:07,015 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 12:38:07,016 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 12:38:07,018 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 12:38:07,018 INFO ]: Start accepts. Automaton has 23 states. Word has length 29 [2018-06-22 12:38:07,018 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 12:38:07,018 INFO ]: With dead ends: 17 [2018-06-22 12:38:07,019 INFO ]: Without dead ends: 0 [2018-06-22 12:38:07,019 INFO ]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2018-06-22 12:38:07,019 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 12:38:07,019 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 12:38:07,019 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 12:38:07,019 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 12:38:07,019 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2018-06-22 12:38:07,019 INFO ]: Finished accepts. word is rejected. [2018-06-22 12:38:07,019 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 12:38:07,019 INFO ]: Interpolant automaton has 23 states. [2018-06-22 12:38:07,019 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 12:38:07,019 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 12:38:07,024 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 12:38:07 BoogieIcfgContainer [2018-06-22 12:38:07,024 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 12:38:07,026 INFO ]: Toolchain (without parser) took 20973.42 ms. Allocated memory was 306.7 MB in the beginning and 501.7 MB in the end (delta: 195.0 MB). Free memory was 261.1 MB in the beginning and 183.1 MB in the end (delta: 78.0 MB). Peak memory consumption was 273.0 MB. Max. memory is 3.6 GB. [2018-06-22 12:38:07,026 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 306.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 12:38:07,027 INFO ]: ChcToBoogie took 57.53 ms. Allocated memory is still 306.7 MB. Free memory was 261.1 MB in the beginning and 259.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 12:38:07,027 INFO ]: Boogie Preprocessor took 37.33 ms. Allocated memory is still 306.7 MB. Free memory is still 259.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 12:38:07,028 INFO ]: RCFGBuilder took 204.90 ms. Allocated memory is still 306.7 MB. Free memory was 259.1 MB in the beginning and 251.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 12:38:07,028 INFO ]: TraceAbstraction took 20652.47 ms. Allocated memory was 306.7 MB in the beginning and 501.7 MB in the end (delta: 195.0 MB). Free memory was 251.1 MB in the beginning and 183.1 MB in the end (delta: 68.0 MB). Peak memory consumption was 263.0 MB. Max. memory is 3.6 GB. [2018-06-22 12:38:07,030 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 306.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 57.53 ms. Allocated memory is still 306.7 MB. Free memory was 261.1 MB in the beginning and 259.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 37.33 ms. Allocated memory is still 306.7 MB. Free memory is still 259.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * RCFGBuilder took 204.90 ms. Allocated memory is still 306.7 MB. Free memory was 259.1 MB in the beginning and 251.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 20652.47 ms. Allocated memory was 306.7 MB in the beginning and 501.7 MB in the end (delta: 195.0 MB). Free memory was 251.1 MB in the beginning and 183.1 MB in the end (delta: 68.0 MB). Peak memory consumption was 263.0 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. SAFE Result, 20.5s OverallTime, 6 OverallIterations, 6 TraceHistogramMax, 4.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 68 SDtfs, 39 SDslu, 277 SDs, 0 SdLazy, 256 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 170 GetRequests, 83 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 14.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=5, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 15.0s InterpolantComputationTime, 219 NumberOfCodeBlocks, 219 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 208 ConstructedInterpolants, 0 QuantifiedInterpolants, 183656 SizeOfPredicates, 197 NumberOfNonLiveVariables, 550 ConjunctsInSsa, 236 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 83/250 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/inc_cas_prop2.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_12-38-07-039.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/inc_cas_prop2.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_12-38-07-039.csv Received shutdown request...