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/vmt-chc-benchmarks/ctigar/svd2.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 15:39:44,737 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 15:39:44,739 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 15:39:44,750 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 15:39:44,751 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 15:39:44,752 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 15:39:44,753 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 15:39:44,757 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 15:39:44,758 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 15:39:44,760 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 15:39:44,761 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 15:39:44,761 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 15:39:44,762 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 15:39:44,765 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 15:39:44,766 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 15:39:44,767 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 15:39:44,780 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 15:39:44,781 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 15:39:44,783 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 15:39:44,784 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 15:39:44,785 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 15:39:44,787 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 15:39:44,787 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 15:39:44,788 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 15:39:44,792 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 15:39:44,793 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 15:39:44,794 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 15:39:44,795 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 15:39:44,797 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 15:39:44,797 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 15:39:44,798 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 15:39:44,798 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 15:39:44,798 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 15:39:44,799 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 15:39:44,805 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 15:39:44,805 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 15:39:44,830 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 15:39:44,830 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 15:39:44,831 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 15:39:44,832 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 15:39:44,833 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 15:39:44,833 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 15:39:44,833 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 15:39:44,833 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 15:39:44,833 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 15:39:44,834 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 15:39:44,834 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 15:39:44,834 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 15:39:44,834 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 15:39:44,834 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 15:39:44,835 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 15:39:44,836 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 15:39:44,836 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 15:39:44,836 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 15:39:44,836 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 15:39:44,838 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 15:39:44,838 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 15:39:44,891 INFO ]: Repository-Root is: /tmp [2018-06-22 15:39:44,907 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 15:39:44,912 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 15:39:44,913 INFO ]: Initializing SmtParser... [2018-06-22 15:39:44,913 INFO ]: SmtParser initialized [2018-06-22 15:39:44,914 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/svd2.c.smt2 [2018-06-22 15:39:44,916 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 15:39:45,007 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/svd2.c.smt2 unknown [2018-06-22 15:39:45,385 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/svd2.c.smt2 [2018-06-22 15:39:45,390 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 15:39:45,397 INFO ]: Walking toolchain with 4 elements. [2018-06-22 15:39:45,397 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 15:39:45,397 INFO ]: Initializing ChcToBoogie... [2018-06-22 15:39:45,398 INFO ]: ChcToBoogie initialized [2018-06-22 15:39:45,401 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:39:45" (1/1) ... [2018-06-22 15:39:45,442 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:39:45 Unit [2018-06-22 15:39:45,443 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 15:39:45,443 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 15:39:45,443 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 15:39:45,443 INFO ]: Boogie Preprocessor initialized [2018-06-22 15:39:45,463 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:39:45" (1/1) ... [2018-06-22 15:39:45,463 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:39:45" (1/1) ... [2018-06-22 15:39:45,483 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:39:45" (1/1) ... [2018-06-22 15:39:45,483 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:39:45" (1/1) ... [2018-06-22 15:39:45,489 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:39:45" (1/1) ... [2018-06-22 15:39:45,490 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:39:45" (1/1) ... [2018-06-22 15:39:45,501 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:39:45" (1/1) ... [2018-06-22 15:39:45,504 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 15:39:45,504 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 15:39:45,504 INFO ]: Initializing RCFGBuilder... [2018-06-22 15:39:45,504 INFO ]: RCFGBuilder initialized [2018-06-22 15:39:45,505 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:39:45" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 15:39:45,520 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 15:39:45,520 INFO ]: Found specification of procedure False [2018-06-22 15:39:45,520 INFO ]: Found implementation of procedure False [2018-06-22 15:39:45,520 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 15:39:45,520 INFO ]: Found specification of procedure state [2018-06-22 15:39:45,520 INFO ]: Found implementation of procedure state [2018-06-22 15:39:45,520 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 15:39:45,520 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 15:39:45,520 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 15:39:45,786 INFO ]: Using library mode [2018-06-22 15:39:45,787 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:39:45 BoogieIcfgContainer [2018-06-22 15:39:45,787 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 15:39:45,788 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 15:39:45,788 INFO ]: Initializing TraceAbstraction... [2018-06-22 15:39:45,791 INFO ]: TraceAbstraction initialized [2018-06-22 15:39:45,791 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:39:45" (1/3) ... [2018-06-22 15:39:45,792 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2540858e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 03:39:45, skipping insertion in model container [2018-06-22 15:39:45,792 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:39:45" (2/3) ... [2018-06-22 15:39:45,792 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2540858e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 03:39:45, skipping insertion in model container [2018-06-22 15:39:45,792 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:39:45" (3/3) ... [2018-06-22 15:39:45,794 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 15:39:45,803 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 15:39:45,811 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 15:39:45,896 INFO ]: Using default assertion order modulation [2018-06-22 15:39:45,896 INFO ]: Interprodecural is true [2018-06-22 15:39:45,896 INFO ]: Hoare is false [2018-06-22 15:39:45,897 INFO ]: Compute interpolants for FPandBP [2018-06-22 15:39:45,897 INFO ]: Backedges is TWOTRACK [2018-06-22 15:39:45,897 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 15:39:45,897 INFO ]: Difference is false [2018-06-22 15:39:45,900 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 15:39:45,900 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 15:39:45,916 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 15:39:45,930 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 15:39:45,930 INFO ]: Found error trace [2018-06-22 15:39:45,930 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:39:45,931 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:39:45,937 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 15:39:45,939 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:39:45,939 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:39:45,979 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:39:45,979 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:39:45,979 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:39:46,008 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:39:46,168 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 15:39:46,171 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 15:39:46,171 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 15:39:46,173 INFO ]: Interpolant automaton has 4 states [2018-06-22 15:39:46,185 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 15:39:46,186 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 15:39:46,189 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 15:39:46,301 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:39:46,302 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 15:39:46,302 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 15:39:46,303 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 15:39:46,304 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:39:46,312 INFO ]: With dead ends: 13 [2018-06-22 15:39:46,312 INFO ]: Without dead ends: 13 [2018-06-22 15:39:46,313 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 15:39:46,331 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 15:39:46,365 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 15:39:46,366 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 15:39:46,367 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 15:39:46,368 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 15:39:46,368 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:39:46,368 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 15:39:46,368 INFO ]: Interpolant automaton has 4 states. [2018-06-22 15:39:46,368 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 15:39:46,369 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 15:39:46,369 INFO ]: Found error trace [2018-06-22 15:39:46,369 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:39:46,369 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:39:46,369 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 15:39:46,369 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:39:46,369 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:39:46,370 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:39:46,370 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:39:46,370 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:39:46,450 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:39:46,746 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:39:46,746 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:39:46,746 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 15:39:46,755 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:39:46,796 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:39:46,805 INFO ]: Computing forward predicates... [2018-06-22 15:39:47,325 WARN ]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 15:39:47,708 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:39:47,743 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:39:47,743 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 15:39:47,744 INFO ]: Interpolant automaton has 9 states [2018-06-22 15:39:47,744 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 15:39:47,744 INFO ]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-06-22 15:39:47,744 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 15:39:47,975 WARN ]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 15:39:48,210 WARN ]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-06-22 15:39:48,431 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:39:48,431 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 15:39:48,432 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 15:39:48,432 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 15:39:48,432 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:39:48,432 INFO ]: With dead ends: 15 [2018-06-22 15:39:48,432 INFO ]: Without dead ends: 15 [2018-06-22 15:39:48,434 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-06-22 15:39:48,434 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 15:39:48,437 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 15:39:48,437 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 15:39:48,437 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 15:39:48,437 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 15:39:48,438 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:39:48,438 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 15:39:48,438 INFO ]: Interpolant automaton has 9 states. [2018-06-22 15:39:48,438 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 15:39:48,438 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 15:39:48,438 INFO ]: Found error trace [2018-06-22 15:39:48,438 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:39:48,438 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:39:48,439 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 15:39:48,439 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:39:48,439 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:39:48,439 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:39:48,439 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:39:48,439 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:39:48,502 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:39:48,853 WARN ]: Spent 136.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2018-06-22 15:39:49,231 WARN ]: Spent 348.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2018-06-22 15:39:49,244 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:39:49,244 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:39:49,244 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 15:39:49,253 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 15:39:49,304 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 15:39:49,304 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:39:49,308 INFO ]: Computing forward predicates... [2018-06-22 15:39:49,741 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:39:49,761 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:39:49,761 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2018-06-22 15:39:49,761 INFO ]: Interpolant automaton has 11 states [2018-06-22 15:39:49,762 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 15:39:49,762 INFO ]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-06-22 15:39:49,762 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 11 states. [2018-06-22 15:39:50,061 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:39:50,061 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 15:39:50,061 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 15:39:50,061 INFO ]: Start accepts. Automaton has 11 states. Word has length 17 [2018-06-22 15:39:50,061 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:39:50,062 INFO ]: With dead ends: 17 [2018-06-22 15:39:50,062 INFO ]: Without dead ends: 17 [2018-06-22 15:39:50,063 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2018-06-22 15:39:50,063 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 15:39:50,066 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 15:39:50,066 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 15:39:50,066 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 15:39:50,066 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 15:39:50,066 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:39:50,066 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 15:39:50,067 INFO ]: Interpolant automaton has 11 states. [2018-06-22 15:39:50,067 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 15:39:50,067 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 15:39:50,067 INFO ]: Found error trace [2018-06-22 15:39:50,067 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:39:50,067 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:39:50,068 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 15:39:50,068 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:39:50,068 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:39:50,068 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:39:50,068 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:39:50,068 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:39:50,122 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:39:50,389 WARN ]: Spent 142.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2018-06-22 15:39:50,521 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 15:39:50,522 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:39:50,522 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 15:39:50,538 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:39:50,603 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 15:39:50,603 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:39:50,607 INFO ]: Computing forward predicates... [2018-06-22 15:39:51,023 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 15:39:51,045 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:39:51,045 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2018-06-22 15:39:51,046 INFO ]: Interpolant automaton has 14 states [2018-06-22 15:39:51,046 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 15:39:51,046 INFO ]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-06-22 15:39:51,046 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 14 states. [2018-06-22 15:39:51,418 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:39:51,418 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 15:39:51,418 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 15:39:51,418 INFO ]: Start accepts. Automaton has 14 states. Word has length 21 [2018-06-22 15:39:51,419 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:39:51,419 INFO ]: With dead ends: 19 [2018-06-22 15:39:51,419 INFO ]: Without dead ends: 19 [2018-06-22 15:39:51,420 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2018-06-22 15:39:51,420 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 15:39:51,422 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 15:39:51,422 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 15:39:51,423 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 15:39:51,423 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 15:39:51,423 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:39:51,423 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 15:39:51,423 INFO ]: Interpolant automaton has 14 states. [2018-06-22 15:39:51,423 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 15:39:51,424 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 15:39:51,424 INFO ]: Found error trace [2018-06-22 15:39:51,424 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:39:51,424 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:39:51,424 INFO ]: Analyzing trace with hash -434924750, now seen corresponding path program 4 times [2018-06-22 15:39:51,424 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:39:51,424 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:39:51,425 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:39:51,425 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:39:51,425 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:39:51,484 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:39:52,396 WARN ]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-06-22 15:39:53,032 WARN ]: Spent 557.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-06-22 15:39:53,157 WARN ]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-06-22 15:39:53,332 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 15:39:53,332 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:39:53,332 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 15:39:53,351 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 15:39:53,418 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 15:39:53,418 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:39:53,424 INFO ]: Computing forward predicates... [2018-06-22 15:39:54,045 WARN ]: Spent 335.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 32 [2018-06-22 15:39:54,229 WARN ]: Spent 145.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 25 [2018-06-22 15:39:55,225 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 15:39:55,244 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 15:39:55,936 WARN ]: Spent 121.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 8 [2018-06-22 15:39:55,940 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 15:39:55,959 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:39:55,960 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 16 [2018-06-22 15:39:55,960 INFO ]: Interpolant automaton has 16 states [2018-06-22 15:39:55,960 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 15:39:55,960 INFO ]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2018-06-22 15:39:55,960 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 16 states. [2018-06-22 15:39:56,503 WARN ]: Spent 512.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2018-06-22 15:39:56,797 WARN ]: Spent 257.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 25 [2018-06-22 15:39:56,931 WARN ]: Spent 117.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 28 [2018-06-22 15:39:57,291 WARN ]: Spent 341.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2018-06-22 15:39:58,195 WARN ]: Spent 881.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2018-06-22 15:39:58,261 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:39:58,261 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 15:39:58,262 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 15:39:58,262 INFO ]: Start accepts. Automaton has 16 states. Word has length 25 [2018-06-22 15:39:58,263 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:39:58,263 INFO ]: With dead ends: 21 [2018-06-22 15:39:58,263 INFO ]: Without dead ends: 21 [2018-06-22 15:39:58,264 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2018-06-22 15:39:58,264 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 15:39:58,266 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 15:39:58,266 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 15:39:58,267 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 15:39:58,267 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-22 15:39:58,267 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:39:58,267 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 15:39:58,267 INFO ]: Interpolant automaton has 16 states. [2018-06-22 15:39:58,267 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 15:39:58,268 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 15:39:58,268 INFO ]: Found error trace [2018-06-22 15:39:58,268 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:39:58,268 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:39:58,268 INFO ]: Analyzing trace with hash 1986427350, now seen corresponding path program 5 times [2018-06-22 15:39:58,268 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:39:58,268 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:39:58,269 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:39:58,269 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:39:58,269 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:39:58,369 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:39:59,045 WARN ]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-06-22 15:39:59,215 WARN ]: Spent 117.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2018-06-22 15:39:59,490 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 15:39:59,490 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:39:59,490 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 15:39:59,499 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 15:39:59,572 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-22 15:39:59,572 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:39:59,578 INFO ]: Computing forward predicates... [2018-06-22 15:40:04,628 WARN ]: Spent 4.56 s on a formula simplification. DAG size of input: 303 DAG size of output: 95 [2018-06-22 15:40:05,602 WARN ]: Spent 689.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2018-06-22 15:40:11,286 INFO ]: Checked inductivity of 55 backedges. 1 proven. 39 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 15:40:11,312 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:40:11,312 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 23 [2018-06-22 15:40:11,312 INFO ]: Interpolant automaton has 23 states [2018-06-22 15:40:11,312 INFO ]: Constructing interpolant automaton starting with 23 interpolants. [2018-06-22 15:40:11,312 INFO ]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2018-06-22 15:40:11,312 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 23 states. [2018-06-22 15:40:12,626 WARN ]: Spent 1.26 s on a formula simplification. DAG size of input: 136 DAG size of output: 107 [2018-06-22 15:40:13,054 WARN ]: Spent 371.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 41 [2018-06-22 15:40:13,757 WARN ]: Spent 665.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 52 [2018-06-22 15:40:14,919 WARN ]: Spent 1.12 s on a formula simplification. DAG size of input: 142 DAG size of output: 55 [2018-06-22 15:40:15,777 WARN ]: Spent 794.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 58 [2018-06-22 15:40:17,007 WARN ]: Spent 1.18 s on a formula simplification. DAG size of input: 137 DAG size of output: 79 [2018-06-22 15:40:17,191 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:40:17,191 INFO ]: Finished difference Result 23 states and 24 transitions. [2018-06-22 15:40:17,191 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 15:40:17,191 INFO ]: Start accepts. Automaton has 23 states. Word has length 29 [2018-06-22 15:40:17,191 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:40:17,192 INFO ]: With dead ends: 23 [2018-06-22 15:40:17,192 INFO ]: Without dead ends: 23 [2018-06-22 15:40:17,193 INFO ]: 0 DeclaredPredicates, 49 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2018-06-22 15:40:17,193 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 15:40:17,196 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-22 15:40:17,196 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 15:40:17,197 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-06-22 15:40:17,197 INFO ]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 29 [2018-06-22 15:40:17,197 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:40:17,197 INFO ]: Abstraction has 23 states and 24 transitions. [2018-06-22 15:40:17,197 INFO ]: Interpolant automaton has 23 states. [2018-06-22 15:40:17,197 INFO ]: Start isEmpty. Operand 23 states and 24 transitions. [2018-06-22 15:40:17,198 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 15:40:17,198 INFO ]: Found error trace [2018-06-22 15:40:17,198 INFO ]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:40:17,198 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:40:17,198 INFO ]: Analyzing trace with hash 800064122, now seen corresponding path program 6 times [2018-06-22 15:40:17,198 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:40:17,198 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:40:17,199 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:40:17,199 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:40:17,199 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:40:17,309 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:40:17,707 WARN ]: Spent 113.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2018-06-22 15:40:18,214 INFO ]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 15:40:18,214 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:40:18,214 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 15:40:18,220 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 15:40:18,316 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-06-22 15:40:18,316 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:40:18,321 INFO ]: Computing forward predicates... [2018-06-22 15:40:18,795 WARN ]: Spent 204.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2018-06-22 15:40:19,128 WARN ]: Spent 183.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2018-06-22 15:40:20,069 INFO ]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 15:40:20,099 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:40:20,099 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 27 [2018-06-22 15:40:20,100 INFO ]: Interpolant automaton has 27 states [2018-06-22 15:40:20,100 INFO ]: Constructing interpolant automaton starting with 27 interpolants. [2018-06-22 15:40:20,100 INFO ]: CoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2018-06-22 15:40:20,101 INFO ]: Start difference. First operand 23 states and 24 transitions. Second operand 27 states. [2018-06-22 15:40:21,048 WARN ]: Spent 894.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 90 [2018-06-22 15:40:21,270 WARN ]: Spent 165.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 23 [2018-06-22 15:40:21,614 WARN ]: Spent 316.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 51 [2018-06-22 15:40:22,124 WARN ]: Spent 476.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 59 [2018-06-22 15:40:22,450 WARN ]: Spent 288.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 47 [2018-06-22 15:40:22,835 WARN ]: Spent 308.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 48 [2018-06-22 15:40:23,511 WARN ]: Spent 636.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 69 [2018-06-22 15:40:23,547 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:40:23,547 INFO ]: Finished difference Result 25 states and 26 transitions. [2018-06-22 15:40:23,548 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 15:40:23,548 INFO ]: Start accepts. Automaton has 27 states. Word has length 33 [2018-06-22 15:40:23,548 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:40:23,549 INFO ]: With dead ends: 25 [2018-06-22 15:40:23,549 INFO ]: Without dead ends: 25 [2018-06-22 15:40:23,550 INFO ]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=202, Invalid=988, Unknown=0, NotChecked=0, Total=1190 [2018-06-22 15:40:23,550 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-22 15:40:23,553 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-06-22 15:40:23,553 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-22 15:40:23,553 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-06-22 15:40:23,553 INFO ]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 33 [2018-06-22 15:40:23,554 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:40:23,554 INFO ]: Abstraction has 25 states and 26 transitions. [2018-06-22 15:40:23,554 INFO ]: Interpolant automaton has 27 states. [2018-06-22 15:40:23,554 INFO ]: Start isEmpty. Operand 25 states and 26 transitions. [2018-06-22 15:40:23,554 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 15:40:23,554 INFO ]: Found error trace [2018-06-22 15:40:23,554 INFO ]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:40:23,555 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:40:23,555 INFO ]: Analyzing trace with hash -411423458, now seen corresponding path program 7 times [2018-06-22 15:40:23,555 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:40:23,555 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:40:23,555 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:40:23,555 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:40:23,555 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:40:23,623 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:40:23,906 WARN ]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 15:40:24,078 WARN ]: Spent 106.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2018-06-22 15:40:24,221 WARN ]: Spent 135.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2018-06-22 15:40:24,679 INFO ]: Checked inductivity of 105 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-06-22 15:40:24,679 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:40:24,679 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 15:40:24,685 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:40:24,763 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:40:24,770 INFO ]: Computing forward predicates... [2018-06-22 15:40:26,301 WARN ]: Spent 1.23 s on a formula simplification. DAG size of input: 175 DAG size of output: 40 [2018-06-22 15:40:26,661 WARN ]: Spent 310.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2018-06-22 15:40:27,117 WARN ]: Spent 391.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 41 [2018-06-22 15:40:27,402 WARN ]: Spent 236.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 35 [2018-06-22 15:40:28,381 INFO ]: Checked inductivity of 105 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-06-22 15:40:28,400 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:40:28,400 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 24 [2018-06-22 15:40:28,401 INFO ]: Interpolant automaton has 24 states [2018-06-22 15:40:28,401 INFO ]: Constructing interpolant automaton starting with 24 interpolants. [2018-06-22 15:40:28,401 INFO ]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2018-06-22 15:40:28,401 INFO ]: Start difference. First operand 25 states and 26 transitions. Second operand 24 states. [2018-06-22 15:40:29,464 WARN ]: Spent 974.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 98 [2018-06-22 15:40:29,842 WARN ]: Spent 328.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 33 [2018-06-22 15:40:30,417 WARN ]: Spent 537.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 57 [2018-06-22 15:40:30,979 WARN ]: Spent 529.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 50 [2018-06-22 15:40:31,765 WARN ]: Spent 747.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 70 [2018-06-22 15:40:32,450 WARN ]: Spent 648.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 62 [2018-06-22 15:40:33,114 WARN ]: Spent 575.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 69 [2018-06-22 15:40:34,275 WARN ]: Spent 1.06 s on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2018-06-22 15:40:34,310 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:40:34,310 INFO ]: Finished difference Result 27 states and 28 transitions. [2018-06-22 15:40:34,311 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 15:40:34,311 INFO ]: Start accepts. Automaton has 24 states. Word has length 37 [2018-06-22 15:40:34,312 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:40:34,312 INFO ]: With dead ends: 27 [2018-06-22 15:40:34,312 INFO ]: Without dead ends: 27 [2018-06-22 15:40:34,313 INFO ]: 0 DeclaredPredicates, 63 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=201, Invalid=855, Unknown=0, NotChecked=0, Total=1056 [2018-06-22 15:40:34,313 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-22 15:40:34,316 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-06-22 15:40:34,316 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-22 15:40:34,317 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-06-22 15:40:34,317 INFO ]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 37 [2018-06-22 15:40:34,317 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:40:34,317 INFO ]: Abstraction has 27 states and 28 transitions. [2018-06-22 15:40:34,317 INFO ]: Interpolant automaton has 24 states. [2018-06-22 15:40:34,317 INFO ]: Start isEmpty. Operand 27 states and 28 transitions. [2018-06-22 15:40:34,318 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-22 15:40:34,318 INFO ]: Found error trace [2018-06-22 15:40:34,318 INFO ]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:40:34,318 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:40:34,318 INFO ]: Analyzing trace with hash -544278078, now seen corresponding path program 8 times [2018-06-22 15:40:34,318 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:40:34,318 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:40:34,319 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:40:34,319 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:40:34,319 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:40:34,395 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:40:34,694 WARN ]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 15:40:34,976 WARN ]: Spent 176.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2018-06-22 15:40:35,177 WARN ]: Spent 191.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2018-06-22 15:40:35,323 WARN ]: Spent 136.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2018-06-22 15:40:35,458 WARN ]: Spent 125.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2018-06-22 15:40:36,023 INFO ]: Checked inductivity of 136 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-06-22 15:40:36,023 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:40:36,023 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 15:40:36,028 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 15:40:36,120 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 15:40:36,120 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:40:36,128 INFO ]: Computing forward predicates... [2018-06-22 15:40:36,945 WARN ]: Spent 643.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 11 [2018-06-22 15:40:37,176 WARN ]: Spent 102.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2018-06-22 15:40:37,661 WARN ]: Spent 334.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2018-06-22 15:40:37,899 WARN ]: Spent 190.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2018-06-22 15:40:38,773 INFO ]: Checked inductivity of 136 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-06-22 15:40:38,792 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:40:38,792 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 34 [2018-06-22 15:40:38,793 INFO ]: Interpolant automaton has 34 states [2018-06-22 15:40:38,793 INFO ]: Constructing interpolant automaton starting with 34 interpolants. [2018-06-22 15:40:38,793 INFO ]: CoverageRelationStatistics Valid=122, Invalid=1000, Unknown=0, NotChecked=0, Total=1122 [2018-06-22 15:40:38,793 INFO ]: Start difference. First operand 27 states and 28 transitions. Second operand 34 states. [2018-06-22 15:40:39,796 WARN ]: Spent 934.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 111 [2018-06-22 15:40:40,199 WARN ]: Spent 340.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 34 [2018-06-22 15:40:40,981 WARN ]: Spent 537.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 57 [2018-06-22 15:40:41,644 WARN ]: Spent 484.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 60 [2018-06-22 15:40:42,163 WARN ]: Spent 412.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 60 [2018-06-22 15:40:42,647 WARN ]: Spent 442.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 48 [2018-06-22 15:40:43,123 WARN ]: Spent 435.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 51 [2018-06-22 15:40:43,673 WARN ]: Spent 490.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 55 [2018-06-22 15:40:44,273 WARN ]: Spent 558.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 69 [2018-06-22 15:40:44,831 WARN ]: Spent 510.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 66 [2018-06-22 15:40:45,456 WARN ]: Spent 579.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 57 [2018-06-22 15:40:46,043 WARN ]: Spent 544.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 60 [2018-06-22 15:40:46,798 WARN ]: Spent 709.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 77 Received shutdown request... [2018-06-22 15:40:47,674 WARN ]: Removed 20 from assertion stack [2018-06-22 15:40:47,674 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-06-22 15:40:47,674 WARN ]: Verification canceled [2018-06-22 15:40:47,678 WARN ]: Timeout [2018-06-22 15:40:47,678 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 03:40:47 BoogieIcfgContainer [2018-06-22 15:40:47,678 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 15:40:47,678 INFO ]: Toolchain (without parser) took 62288.37 ms. Allocated memory was 306.2 MB in the beginning and 837.3 MB in the end (delta: 531.1 MB). Free memory was 253.6 MB in the beginning and 633.7 MB in the end (delta: -380.2 MB). Peak memory consumption was 592.2 MB. Max. memory is 3.6 GB. [2018-06-22 15:40:47,679 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 306.2 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 15:40:47,679 INFO ]: ChcToBoogie took 45.52 ms. Allocated memory is still 306.2 MB. Free memory was 253.6 MB in the beginning and 251.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. [2018-06-22 15:40:47,679 INFO ]: Boogie Preprocessor took 60.70 ms. Allocated memory is still 306.2 MB. Free memory was 251.5 MB in the beginning and 249.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:40:47,680 INFO ]: RCFGBuilder took 282.69 ms. Allocated memory is still 306.2 MB. Free memory was 249.5 MB in the beginning and 236.5 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:40:47,680 INFO ]: TraceAbstraction took 61889.72 ms. Allocated memory was 306.2 MB in the beginning and 837.3 MB in the end (delta: 531.1 MB). Free memory was 236.5 MB in the beginning and 633.7 MB in the end (delta: -397.2 MB). Peak memory consumption was 575.2 MB. Max. memory is 3.6 GB. [2018-06-22 15:40:47,683 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 306.2 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 45.52 ms. Allocated memory is still 306.2 MB. Free memory was 253.6 MB in the beginning and 251.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 60.70 ms. Allocated memory is still 306.2 MB. Free memory was 251.5 MB in the beginning and 249.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 282.69 ms. Allocated memory is still 306.2 MB. Free memory was 249.5 MB in the beginning and 236.5 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 61889.72 ms. Allocated memory was 306.2 MB in the beginning and 837.3 MB in the end (delta: 531.1 MB). Free memory was 236.5 MB in the beginning and 633.7 MB in the end (delta: -397.2 MB). Peak memory consumption was 575.2 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 (27states) and interpolant automaton (currently 17 states, 34 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 134. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 61.7s OverallTime, 9 OverallIterations, 9 TraceHistogramMax, 27.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 117 SDtfs, 435 SDslu, 741 SDs, 0 SdLazy, 670 SolverSat, 533 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 372 GetRequests, 160 SyntacticMatches, 12 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 835 ImplicationChecksByTransitivity, 46.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=8, 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 32.1s InterpolantComputationTime, 441 NumberOfCodeBlocks, 441 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 424 ConstructedInterpolants, 0 QuantifiedInterpolants, 66550788 SizeOfPredicates, 645 NumberOfNonLiveVariables, 2800 ConjunctsInSsa, 416 ConjunctsInUnsatCore, 17 InterpolantComputations, 1 PerfectInterpolantSequences, 241/888 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/svd2.c.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_15-40-47-695.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/svd2.c.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_15-40-47-695.csv Completed graceful shutdown