java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/ctigar/split.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 05:58:22,707 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 05:58:22,709 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 05:58:22,724 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 05:58:22,725 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 05:58:22,726 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 05:58:22,733 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 05:58:22,737 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 05:58:22,739 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 05:58:22,740 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 05:58:22,741 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 05:58:22,741 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 05:58:22,742 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 05:58:22,743 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 05:58:22,744 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 05:58:22,744 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 05:58:22,746 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 05:58:22,748 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 05:58:22,750 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 05:58:22,751 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 05:58:22,752 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 05:58:22,755 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 05:58:22,755 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 05:58:22,755 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 05:58:22,756 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 05:58:22,757 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 05:58:22,758 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 05:58:22,759 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 05:58:22,760 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 05:58:22,760 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 05:58:22,761 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 05:58:22,762 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 05:58:22,762 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 05:58:22,763 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 05:58:22,764 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 05:58:22,764 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 05:58:22,783 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 05:58:22,783 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 05:58:22,784 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 05:58:22,784 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 05:58:22,785 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 05:58:22,791 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 05:58:22,792 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 05:58:22,792 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 05:58:22,792 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 05:58:22,792 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 05:58:22,793 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 05:58:22,793 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 05:58:22,793 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 05:58:22,793 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 05:58:22,794 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 05:58:22,794 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 05:58:22,794 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 05:58:22,796 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 05:58:22,796 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 05:58:22,845 INFO ]: Repository-Root is: /tmp [2018-06-22 05:58:22,865 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 05:58:22,871 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 05:58:22,872 INFO ]: Initializing SmtParser... [2018-06-22 05:58:22,873 INFO ]: SmtParser initialized [2018-06-22 05:58:22,873 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/split.c.smt2 [2018-06-22 05:58:22,875 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 05:58:22,975 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/split.c.smt2 unknown [2018-06-22 05:58:23,298 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/split.c.smt2 [2018-06-22 05:58:23,304 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 05:58:23,311 INFO ]: Walking toolchain with 4 elements. [2018-06-22 05:58:23,311 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 05:58:23,311 INFO ]: Initializing ChcToBoogie... [2018-06-22 05:58:23,311 INFO ]: ChcToBoogie initialized [2018-06-22 05:58:23,315 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:58:23" (1/1) ... [2018-06-22 05:58:23,373 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:58:23 Unit [2018-06-22 05:58:23,374 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 05:58:23,374 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 05:58:23,374 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 05:58:23,374 INFO ]: Boogie Preprocessor initialized [2018-06-22 05:58:23,398 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:58:23" (1/1) ... [2018-06-22 05:58:23,398 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:58:23" (1/1) ... [2018-06-22 05:58:23,406 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:58:23" (1/1) ... [2018-06-22 05:58:23,406 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:58:23" (1/1) ... [2018-06-22 05:58:23,422 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:58:23" (1/1) ... [2018-06-22 05:58:23,424 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:58:23" (1/1) ... [2018-06-22 05:58:23,425 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:58:23" (1/1) ... [2018-06-22 05:58:23,427 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 05:58:23,427 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 05:58:23,428 INFO ]: Initializing RCFGBuilder... [2018-06-22 05:58:23,428 INFO ]: RCFGBuilder initialized [2018-06-22 05:58:23,438 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:58:23" (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 05:58:23,451 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 05:58:23,452 INFO ]: Found specification of procedure gotoProc [2018-06-22 05:58:23,452 INFO ]: Found implementation of procedure gotoProc [2018-06-22 05:58:23,452 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 05:58:23,452 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 05:58:23,452 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 05:58:23,740 INFO ]: Using library mode [2018-06-22 05:58:23,741 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:58:23 BoogieIcfgContainer [2018-06-22 05:58:23,741 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 05:58:23,743 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 05:58:23,746 INFO ]: Initializing TraceAbstraction... [2018-06-22 05:58:23,749 INFO ]: TraceAbstraction initialized [2018-06-22 05:58:23,749 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:58:23" (1/3) ... [2018-06-22 05:58:23,760 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e6736c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 05:58:23, skipping insertion in model container [2018-06-22 05:58:23,760 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:58:23" (2/3) ... [2018-06-22 05:58:23,760 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e6736c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:58:23, skipping insertion in model container [2018-06-22 05:58:23,760 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:58:23" (3/3) ... [2018-06-22 05:58:23,762 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 05:58:23,779 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 05:58:23,788 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 05:58:23,832 INFO ]: Using default assertion order modulation [2018-06-22 05:58:23,833 INFO ]: Interprodecural is true [2018-06-22 05:58:23,833 INFO ]: Hoare is false [2018-06-22 05:58:23,833 INFO ]: Compute interpolants for FPandBP [2018-06-22 05:58:23,833 INFO ]: Backedges is TWOTRACK [2018-06-22 05:58:23,833 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 05:58:23,833 INFO ]: Difference is false [2018-06-22 05:58:23,833 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 05:58:23,833 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 05:58:23,855 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 05:58:23,870 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 05:58:23,870 INFO ]: Found error trace [2018-06-22 05:58:23,871 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:58:23,871 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:58:23,878 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 05:58:23,880 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:58:23,880 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:58:23,923 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:58:23,923 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:58:23,923 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:58:23,967 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:58:24,060 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:58:24,063 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 05:58:24,063 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 05:58:24,065 INFO ]: Interpolant automaton has 3 states [2018-06-22 05:58:24,079 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 05:58:24,080 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:58:24,082 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 05:58:24,151 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:58:24,151 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 05:58:24,152 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 05:58:24,153 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 05:58:24,153 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:58:24,163 INFO ]: With dead ends: 9 [2018-06-22 05:58:24,163 INFO ]: Without dead ends: 9 [2018-06-22 05:58:24,164 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:58:24,178 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 05:58:24,194 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 05:58:24,195 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 05:58:24,196 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 05:58:24,197 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 05:58:24,198 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:58:24,198 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 05:58:24,198 INFO ]: Interpolant automaton has 3 states. [2018-06-22 05:58:24,198 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 05:58:24,198 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 05:58:24,198 INFO ]: Found error trace [2018-06-22 05:58:24,198 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:58:24,198 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:58:24,199 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 05:58:24,199 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:58:24,199 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:58:24,199 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:58:24,200 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:58:24,200 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:58:24,260 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:58:24,479 WARN ]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 05:58:24,480 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:58:24,480 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:58:24,480 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) [2018-06-22 05:58:24,498 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:58:24,562 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:58:24,575 INFO ]: Computing forward predicates... [2018-06-22 05:58:25,267 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:58:25,289 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:58:25,298 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-22 05:58:25,298 INFO ]: Interpolant automaton has 4 states [2018-06-22 05:58:25,299 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 05:58:25,299 INFO ]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-06-22 05:58:25,299 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2018-06-22 05:58:25,379 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:58:25,379 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 05:58:25,379 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 05:58:25,379 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 05:58:25,379 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:58:25,380 INFO ]: With dead ends: 10 [2018-06-22 05:58:25,380 INFO ]: Without dead ends: 10 [2018-06-22 05:58:25,381 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-06-22 05:58:25,381 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 05:58:25,382 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 05:58:25,382 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 05:58:25,382 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 05:58:25,382 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 05:58:25,382 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:58:25,383 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 05:58:25,383 INFO ]: Interpolant automaton has 4 states. [2018-06-22 05:58:25,383 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 05:58:25,384 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 05:58:25,384 INFO ]: Found error trace [2018-06-22 05:58:25,384 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:58:25,384 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:58:25,384 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-22 05:58:25,384 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:58:25,384 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:58:25,385 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:58:25,385 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:58:25,385 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:58:25,465 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:58:25,770 WARN ]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 05:58:25,895 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:58:25,895 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:58:25,895 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 05:58:25,902 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 05:58:25,971 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 05:58:25,971 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:58:25,974 INFO ]: Computing forward predicates... [2018-06-22 05:58:26,457 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:58:26,477 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:58:26,477 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-22 05:58:26,478 INFO ]: Interpolant automaton has 6 states [2018-06-22 05:58:26,478 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 05:58:26,478 INFO ]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-22 05:58:26,478 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2018-06-22 05:58:26,758 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:58:26,758 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 05:58:26,759 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 05:58:26,759 INFO ]: Start accepts. Automaton has 6 states. Word has length 9 [2018-06-22 05:58:26,759 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:58:26,759 INFO ]: With dead ends: 11 [2018-06-22 05:58:26,759 INFO ]: Without dead ends: 11 [2018-06-22 05:58:26,759 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-06-22 05:58:26,759 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 05:58:26,760 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 05:58:26,760 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 05:58:26,761 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 05:58:26,761 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-22 05:58:26,761 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:58:26,761 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 05:58:26,761 INFO ]: Interpolant automaton has 6 states. [2018-06-22 05:58:26,761 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 05:58:26,761 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 05:58:26,761 INFO ]: Found error trace [2018-06-22 05:58:26,761 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:58:26,762 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:58:26,762 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 3 times [2018-06-22 05:58:26,762 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:58:26,762 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:58:26,763 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:58:26,763 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:58:26,763 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:58:26,798 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:58:27,127 WARN ]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 05:58:27,238 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:58:27,238 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:58:27,238 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 05:58:27,245 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 05:58:27,306 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 05:58:27,306 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:58:27,309 INFO ]: Computing forward predicates... [2018-06-22 05:58:27,893 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:58:27,915 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:58:27,915 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 05:58:27,916 INFO ]: Interpolant automaton has 8 states [2018-06-22 05:58:27,916 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 05:58:27,916 INFO ]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-06-22 05:58:27,916 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 8 states. [2018-06-22 05:58:28,067 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:58:28,067 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-22 05:58:28,067 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 05:58:28,067 INFO ]: Start accepts. Automaton has 8 states. Word has length 10 [2018-06-22 05:58:28,067 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:58:28,068 INFO ]: With dead ends: 12 [2018-06-22 05:58:28,068 INFO ]: Without dead ends: 12 [2018-06-22 05:58:28,068 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2018-06-22 05:58:28,068 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 05:58:28,070 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-22 05:58:28,070 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 05:58:28,070 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-22 05:58:28,070 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-06-22 05:58:28,070 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:58:28,070 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-22 05:58:28,070 INFO ]: Interpolant automaton has 8 states. [2018-06-22 05:58:28,070 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-22 05:58:28,071 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 05:58:28,071 INFO ]: Found error trace [2018-06-22 05:58:28,071 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:58:28,071 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:58:28,071 INFO ]: Analyzing trace with hash 201204236, now seen corresponding path program 4 times [2018-06-22 05:58:28,071 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:58:28,071 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:58:28,072 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:58:28,072 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:58:28,072 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:58:28,104 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:58:28,266 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:58:28,266 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:58:28,266 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 05:58:28,272 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 05:58:28,309 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 05:58:28,309 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:58:28,312 INFO ]: Computing forward predicates... [2018-06-22 05:58:28,764 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:58:28,783 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:58:28,783 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-06-22 05:58:28,784 INFO ]: Interpolant automaton has 8 states [2018-06-22 05:58:28,784 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 05:58:28,784 INFO ]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-06-22 05:58:28,784 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 8 states. [2018-06-22 05:58:29,009 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:58:29,009 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 05:58:29,009 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 05:58:29,009 INFO ]: Start accepts. Automaton has 8 states. Word has length 11 [2018-06-22 05:58:29,009 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:58:29,010 INFO ]: With dead ends: 13 [2018-06-22 05:58:29,010 INFO ]: Without dead ends: 13 [2018-06-22 05:58:29,010 INFO ]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2018-06-22 05:58:29,010 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 05:58:29,011 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 05:58:29,011 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 05:58:29,012 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 05:58:29,012 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-06-22 05:58:29,012 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:58:29,012 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 05:58:29,012 INFO ]: Interpolant automaton has 8 states. [2018-06-22 05:58:29,012 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 05:58:29,012 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 05:58:29,012 INFO ]: Found error trace [2018-06-22 05:58:29,012 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:58:29,012 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:58:29,013 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 5 times [2018-06-22 05:58:29,013 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:58:29,013 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:58:29,013 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:58:29,013 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:58:29,013 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:58:29,049 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:58:29,379 WARN ]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-06-22 05:58:29,436 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:58:29,436 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:58:29,436 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 05:58:29,443 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 05:58:29,488 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-06-22 05:58:29,488 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:58:29,494 INFO ]: Computing forward predicates... [2018-06-22 05:58:32,292 WARN ]: Spent 128.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 8 [2018-06-22 05:58:33,296 WARN ]: Spent 485.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 16 [2018-06-22 05:58:36,629 WARN ]: Spent 671.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 11 [2018-06-22 05:58:37,591 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:58:37,624 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:58:37,626 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 05:58:37,627 INFO ]: Interpolant automaton has 13 states [2018-06-22 05:58:37,627 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 05:58:37,627 INFO ]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-06-22 05:58:37,627 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 13 states. [2018-06-22 05:58:37,844 WARN ]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 05:58:38,031 WARN ]: Spent 107.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2018-06-22 05:58:38,411 WARN ]: Spent 284.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 30 [2018-06-22 05:58:38,641 WARN ]: Spent 106.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2018-06-22 05:58:38,642 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:58:38,643 INFO ]: Finished difference Result 14 states and 14 transitions. [2018-06-22 05:58:38,643 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 05:58:38,643 INFO ]: Start accepts. Automaton has 13 states. Word has length 12 [2018-06-22 05:58:38,643 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:58:38,643 INFO ]: With dead ends: 14 [2018-06-22 05:58:38,643 INFO ]: Without dead ends: 14 [2018-06-22 05:58:38,643 INFO ]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2018-06-22 05:58:38,643 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-22 05:58:38,645 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-22 05:58:38,645 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-22 05:58:38,645 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-06-22 05:58:38,645 INFO ]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-06-22 05:58:38,645 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:58:38,645 INFO ]: Abstraction has 14 states and 14 transitions. [2018-06-22 05:58:38,645 INFO ]: Interpolant automaton has 13 states. [2018-06-22 05:58:38,645 INFO ]: Start isEmpty. Operand 14 states and 14 transitions. [2018-06-22 05:58:38,655 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 05:58:38,655 INFO ]: Found error trace [2018-06-22 05:58:38,655 INFO ]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:58:38,655 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:58:38,655 INFO ]: Analyzing trace with hash 23503628, now seen corresponding path program 6 times [2018-06-22 05:58:38,655 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:58:38,655 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:58:38,656 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:58:38,656 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:58:38,656 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:58:38,704 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:58:39,849 WARN ]: Spent 929.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 18 [2018-06-22 05:58:39,918 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:58:39,918 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:58:39,918 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 05:58:39,931 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 05:58:39,982 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-06-22 05:58:39,982 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:58:39,986 INFO ]: Computing forward predicates... [2018-06-22 05:58:44,436 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:58:44,570 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:58:44,582 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:58:44,992 WARN ]: expecting exponential blowup for input size 7 Received shutdown request... [2018-06-22 05:59:31,920 INFO ]: Timeout while computing interpolants [2018-06-22 05:59:32,120 WARN ]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:59:32,120 WARN ]: Verification canceled [2018-06-22 05:59:32,154 WARN ]: Timeout [2018-06-22 05:59:32,154 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:59:32 BoogieIcfgContainer [2018-06-22 05:59:32,154 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 05:59:32,165 INFO ]: Toolchain (without parser) took 68860.22 ms. Allocated memory was 308.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 260.7 MB in the beginning and 387.9 MB in the end (delta: -127.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 05:59:32,166 INFO ]: SmtParser took 0.10 ms. Allocated memory is still 308.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 05:59:32,167 INFO ]: ChcToBoogie took 62.86 ms. Allocated memory is still 308.3 MB. Free memory was 260.7 MB in the beginning and 257.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:59:32,167 INFO ]: Boogie Preprocessor took 52.64 ms. Allocated memory is still 308.3 MB. Free memory was 257.7 MB in the beginning and 256.7 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 3.6 GB. [2018-06-22 05:59:32,173 INFO ]: RCFGBuilder took 313.51 ms. Allocated memory is still 308.3 MB. Free memory was 256.7 MB in the beginning and 246.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:59:32,173 INFO ]: TraceAbstraction took 68411.64 ms. Allocated memory was 308.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 245.7 MB in the beginning and 387.9 MB in the end (delta: -142.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 05:59:32,181 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.10 ms. Allocated memory is still 308.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 62.86 ms. Allocated memory is still 308.3 MB. Free memory was 260.7 MB in the beginning and 257.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 52.64 ms. Allocated memory is still 308.3 MB. Free memory was 257.7 MB in the beginning and 256.7 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 3.6 GB. * RCFGBuilder took 313.51 ms. Allocated memory is still 308.3 MB. Free memory was 256.7 MB in the beginning and 246.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 68411.64 ms. Allocated memory was 308.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 245.7 MB in the beginning and 387.9 MB in the end (delta: -142.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 14 with TraceHistMax 6, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was transforming 0 conjuction. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 68.3s OverallTime, 7 OverallIterations, 6 TraceHistogramMax, 1.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 12 SDslu, 123 SDs, 0 SdLazy, 50 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 40 SyntacticMatches, 8 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 12.0s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 96 ConstructedInterpolants, 1 QuantifiedInterpolants, 3243 SizeOfPredicates, 25 NumberOfNonLiveVariables, 825 ConjunctsInSsa, 134 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/70 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/split.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_05-59-32-205.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/split.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_05-59-32-205.csv Completed graceful shutdown