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/bind_expands_vars2.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 05:09:54,579 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 05:09:54,582 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 05:09:54,598 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 05:09:54,598 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 05:09:54,599 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 05:09:54,600 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 05:09:54,604 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 05:09:54,605 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 05:09:54,607 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 05:09:54,608 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 05:09:54,608 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 05:09:54,609 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 05:09:54,613 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 05:09:54,614 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 05:09:54,614 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 05:09:54,623 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 05:09:54,625 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 05:09:54,626 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 05:09:54,627 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 05:09:54,631 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 05:09:54,633 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 05:09:54,633 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 05:09:54,633 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 05:09:54,636 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 05:09:54,637 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 05:09:54,637 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 05:09:54,638 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 05:09:54,644 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 05:09:54,645 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 05:09:54,645 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 05:09:54,646 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 05:09:54,646 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 05:09:54,647 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 05:09:54,648 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 05:09:54,649 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 05:09:54,671 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 05:09:54,671 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 05:09:54,672 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 05:09:54,672 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 05:09:54,673 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 05:09:54,673 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 05:09:54,676 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 05:09:54,677 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 05:09:54,677 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 05:09:54,677 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 05:09:54,677 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 05:09:54,677 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 05:09:54,678 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 05:09:54,678 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 05:09:54,678 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 05:09:54,678 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 05:09:54,678 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 05:09:54,681 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 05:09:54,681 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 05:09:54,741 INFO ]: Repository-Root is: /tmp [2018-06-22 05:09:54,760 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 05:09:54,766 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 05:09:54,767 INFO ]: Initializing SmtParser... [2018-06-22 05:09:54,767 INFO ]: SmtParser initialized [2018-06-22 05:09:54,768 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/bind_expands_vars2.c.smt2 [2018-06-22 05:09:54,770 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 05:09:54,867 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/bind_expands_vars2.c.smt2 unknown [2018-06-22 05:09:55,184 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/bind_expands_vars2.c.smt2 [2018-06-22 05:09:55,189 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 05:09:55,197 INFO ]: Walking toolchain with 4 elements. [2018-06-22 05:09:55,197 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 05:09:55,197 INFO ]: Initializing ChcToBoogie... [2018-06-22 05:09:55,198 INFO ]: ChcToBoogie initialized [2018-06-22 05:09:55,202 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:09:55" (1/1) ... [2018-06-22 05:09:55,266 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:09:55 Unit [2018-06-22 05:09:55,266 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 05:09:55,270 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 05:09:55,270 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 05:09:55,271 INFO ]: Boogie Preprocessor initialized [2018-06-22 05:09:55,293 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:09:55" (1/1) ... [2018-06-22 05:09:55,293 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:09:55" (1/1) ... [2018-06-22 05:09:55,300 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:09:55" (1/1) ... [2018-06-22 05:09:55,300 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:09:55" (1/1) ... [2018-06-22 05:09:55,315 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:09:55" (1/1) ... [2018-06-22 05:09:55,317 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:09:55" (1/1) ... [2018-06-22 05:09:55,318 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:09:55" (1/1) ... [2018-06-22 05:09:55,320 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 05:09:55,321 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 05:09:55,321 INFO ]: Initializing RCFGBuilder... [2018-06-22 05:09:55,321 INFO ]: RCFGBuilder initialized [2018-06-22 05:09:55,331 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:09:55" (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 05:09:55,345 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 05:09:55,346 INFO ]: Found specification of procedure gotoProc [2018-06-22 05:09:55,346 INFO ]: Found implementation of procedure gotoProc [2018-06-22 05:09:55,346 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 05:09:55,346 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 05:09:55,346 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 05:09:55,526 INFO ]: Using library mode [2018-06-22 05:09:55,527 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:09:55 BoogieIcfgContainer [2018-06-22 05:09:55,527 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 05:09:55,528 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 05:09:55,528 INFO ]: Initializing TraceAbstraction... [2018-06-22 05:09:55,531 INFO ]: TraceAbstraction initialized [2018-06-22 05:09:55,531 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:09:55" (1/3) ... [2018-06-22 05:09:55,532 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bed12ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 05:09:55, skipping insertion in model container [2018-06-22 05:09:55,532 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:09:55" (2/3) ... [2018-06-22 05:09:55,533 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bed12ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:09:55, skipping insertion in model container [2018-06-22 05:09:55,533 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:09:55" (3/3) ... [2018-06-22 05:09:55,535 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 05:09:55,544 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 05:09:55,555 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 05:09:55,611 INFO ]: Using default assertion order modulation [2018-06-22 05:09:55,611 INFO ]: Interprodecural is true [2018-06-22 05:09:55,611 INFO ]: Hoare is false [2018-06-22 05:09:55,611 INFO ]: Compute interpolants for FPandBP [2018-06-22 05:09:55,611 INFO ]: Backedges is TWOTRACK [2018-06-22 05:09:55,611 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 05:09:55,611 INFO ]: Difference is false [2018-06-22 05:09:55,611 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 05:09:55,612 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 05:09:55,626 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 05:09:55,639 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 05:09:55,639 INFO ]: Found error trace [2018-06-22 05:09:55,640 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:09:55,640 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:09:55,644 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 05:09:55,645 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:09:55,646 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:09:55,687 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:09:55,687 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:09:55,687 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:09:55,732 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:09:55,802 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:09:55,810 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 05:09:55,810 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 05:09:55,812 INFO ]: Interpolant automaton has 3 states [2018-06-22 05:09:55,833 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 05:09:55,834 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:09:55,837 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 05:09:55,909 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:09:55,909 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 05:09:55,910 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 05:09:55,914 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 05:09:55,914 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:09:55,925 INFO ]: With dead ends: 9 [2018-06-22 05:09:55,925 INFO ]: Without dead ends: 9 [2018-06-22 05:09:55,926 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 05:09:55,938 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 05:09:55,951 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 05:09:55,952 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 05:09:55,952 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 05:09:55,953 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 05:09:55,953 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:09:55,953 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 05:09:55,953 INFO ]: Interpolant automaton has 3 states. [2018-06-22 05:09:55,953 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 05:09:55,953 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 05:09:55,953 INFO ]: Found error trace [2018-06-22 05:09:55,953 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:09:55,953 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:09:55,953 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 05:09:55,953 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:09:55,953 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:09:55,954 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:09:55,954 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:09:55,954 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:09:55,982 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:09:56,121 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:09:56,122 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:09:56,122 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 05:09:56,137 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 05:09:56,194 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:09:56,207 INFO ]: Computing forward predicates... [2018-06-22 05:09:56,847 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:09:56,869 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:09:56,869 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 05:09:56,869 INFO ]: Interpolant automaton has 5 states [2018-06-22 05:09:56,870 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 05:09:56,870 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 05:09:56,870 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 05:09:57,079 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:09:57,079 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 05:09:57,080 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 05:09:57,080 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 05:09:57,080 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:09:57,080 INFO ]: With dead ends: 10 [2018-06-22 05:09:57,080 INFO ]: Without dead ends: 10 [2018-06-22 05:09:57,081 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-22 05:09:57,081 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 05:09:57,082 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 05:09:57,082 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 05:09:57,083 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 05:09:57,084 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 05:09:57,084 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:09:57,084 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 05:09:57,084 INFO ]: Interpolant automaton has 5 states. [2018-06-22 05:09:57,084 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 05:09:57,084 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 05:09:57,084 INFO ]: Found error trace [2018-06-22 05:09:57,084 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:09:57,084 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:09:57,085 INFO ]: Analyzing trace with hash -2043975570, now seen corresponding path program 2 times [2018-06-22 05:09:57,085 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:09:57,085 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:09:57,086 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:09:57,086 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:09:57,086 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:09:57,139 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:09:57,294 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:09:57,294 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:09:57,294 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 05:09:57,301 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 05:09:57,357 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 05:09:57,357 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:09:57,360 INFO ]: Computing forward predicates... [2018-06-22 05:09:59,696 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:09:59,729 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:09:59,729 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-22 05:09:59,729 INFO ]: Interpolant automaton has 6 states [2018-06-22 05:09:59,729 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 05:09:59,729 INFO ]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-06-22 05:09:59,730 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2018-06-22 05:09:59,969 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:09:59,969 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 05:09:59,969 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 05:09:59,969 INFO ]: Start accepts. Automaton has 6 states. Word has length 9 [2018-06-22 05:09:59,969 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:09:59,970 INFO ]: With dead ends: 11 [2018-06-22 05:09:59,970 INFO ]: Without dead ends: 11 [2018-06-22 05:09:59,970 INFO ]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-06-22 05:09:59,970 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 05:09:59,971 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 05:09:59,971 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 05:09:59,972 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 05:09:59,972 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-22 05:09:59,972 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:09:59,972 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 05:09:59,972 INFO ]: Interpolant automaton has 6 states. [2018-06-22 05:09:59,972 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 05:09:59,972 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 05:09:59,972 INFO ]: Found error trace [2018-06-22 05:09:59,972 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:09:59,972 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:09:59,973 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 3 times [2018-06-22 05:09:59,973 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:09:59,973 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:09:59,974 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:09:59,974 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:09:59,974 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:10:00,033 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:10:00,174 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:10:00,174 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:10:00,174 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 05:10:00,184 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 05:10:00,215 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 05:10:00,215 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:10:00,218 INFO ]: Computing forward predicates... [2018-06-22 05:10:02,425 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:10:02,445 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:10:02,532 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:10:02,542 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:10:02,606 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:10:02,658 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:10:02,671 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:10:02,706 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:10:02,737 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:10:02,795 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:10:02,836 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:10:02,845 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:10:02,865 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:10:13,038 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:10:16,760 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:10:16,877 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:10:16,877 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 05:10:16,877 INFO ]: Interpolant automaton has 8 states [2018-06-22 05:10:16,877 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 05:10:16,877 INFO ]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-06-22 05:10:16,877 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 8 states. [2018-06-22 05:10:17,254 WARN ]: Spent 247.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 8 [2018-06-22 05:10:17,301 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:10:17,302 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 05:10:17,302 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 05:10:17,302 INFO ]: Start accepts. Automaton has 8 states. Word has length 10 [2018-06-22 05:10:17,302 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:10:17,303 INFO ]: With dead ends: 13 [2018-06-22 05:10:17,303 INFO ]: Without dead ends: 13 [2018-06-22 05:10:17,303 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 05:10:17,303 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 05:10:17,305 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 05:10:17,305 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 05:10:17,305 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 05:10:17,305 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-22 05:10:17,305 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:10:17,305 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 05:10:17,305 INFO ]: Interpolant automaton has 8 states. [2018-06-22 05:10:17,305 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 05:10:17,305 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 05:10:17,305 INFO ]: Found error trace [2018-06-22 05:10:17,306 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:10:17,306 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:10:17,306 INFO ]: Analyzing trace with hash -1502133097, now seen corresponding path program 4 times [2018-06-22 05:10:17,306 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:10:17,306 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:10:17,307 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:10:17,307 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:10:17,307 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:10:17,354 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:10:17,620 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:10:17,620 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:10:17,620 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 05:10:17,659 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 05:10:17,709 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 05:10:17,709 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:10:17,713 INFO ]: Computing forward predicates... [2018-06-22 05:10:18,146 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:10:22,005 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:10:22,052 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:10:24,978 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:10:25,054 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:10:25,054 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 05:10:25,054 INFO ]: Interpolant automaton has 13 states [2018-06-22 05:10:25,054 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 05:10:25,054 INFO ]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2018-06-22 05:10:25,054 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 13 states. [2018-06-22 05:10:25,219 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:10:25,219 INFO ]: Finished difference Result 14 states and 14 transitions. [2018-06-22 05:10:25,219 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 05:10:25,219 INFO ]: Start accepts. Automaton has 13 states. Word has length 12 [2018-06-22 05:10:25,219 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:10:25,219 INFO ]: With dead ends: 14 [2018-06-22 05:10:25,219 INFO ]: Without dead ends: 14 [2018-06-22 05:10:25,220 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-06-22 05:10:25,220 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-22 05:10:25,221 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-22 05:10:25,221 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-22 05:10:25,222 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-06-22 05:10:25,222 INFO ]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-06-22 05:10:25,222 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:10:25,222 INFO ]: Abstraction has 14 states and 14 transitions. [2018-06-22 05:10:25,222 INFO ]: Interpolant automaton has 13 states. [2018-06-22 05:10:25,222 INFO ]: Start isEmpty. Operand 14 states and 14 transitions. [2018-06-22 05:10:25,222 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 05:10:25,222 INFO ]: Found error trace [2018-06-22 05:10:25,222 INFO ]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:10:25,222 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:10:25,222 INFO ]: Analyzing trace with hash 679342766, now seen corresponding path program 5 times [2018-06-22 05:10:25,222 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:10:25,222 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:10:25,223 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:10:25,223 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:10:25,223 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:10:25,328 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:10:25,512 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:10:25,512 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:10:25,512 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 05:10:25,519 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 05:10:25,652 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-06-22 05:10:25,652 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:10:25,657 INFO ]: Computing forward predicates... [2018-06-22 05:10:30,077 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:10:30,097 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:10:30,097 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2018-06-22 05:10:30,097 INFO ]: Interpolant automaton has 11 states [2018-06-22 05:10:30,097 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 05:10:30,097 INFO ]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-06-22 05:10:30,097 INFO ]: Start difference. First operand 14 states and 14 transitions. Second operand 11 states. [2018-06-22 05:10:30,241 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:10:30,241 INFO ]: Finished difference Result 15 states and 15 transitions. [2018-06-22 05:10:30,241 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 05:10:30,241 INFO ]: Start accepts. Automaton has 11 states. Word has length 13 [2018-06-22 05:10:30,241 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:10:30,242 INFO ]: With dead ends: 15 [2018-06-22 05:10:30,242 INFO ]: Without dead ends: 15 [2018-06-22 05:10:30,242 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2018-06-22 05:10:30,242 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 05:10:30,243 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 05:10:30,243 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 05:10:30,244 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-06-22 05:10:30,244 INFO ]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-06-22 05:10:30,244 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:10:30,244 INFO ]: Abstraction has 15 states and 15 transitions. [2018-06-22 05:10:30,244 INFO ]: Interpolant automaton has 11 states. [2018-06-22 05:10:30,244 INFO ]: Start isEmpty. Operand 15 states and 15 transitions. [2018-06-22 05:10:30,244 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-22 05:10:30,244 INFO ]: Found error trace [2018-06-22 05:10:30,244 INFO ]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:10:30,245 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:10:30,245 INFO ]: Analyzing trace with hash -414382217, now seen corresponding path program 6 times [2018-06-22 05:10:30,246 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:10:30,247 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:10:30,248 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:10:30,248 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:10:30,248 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:10:30,353 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:10:31,145 WARN ]: Spent 537.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-06-22 05:10:31,568 WARN ]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-06-22 05:10:32,183 WARN ]: Spent 522.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2018-06-22 05:10:32,319 WARN ]: Spent 125.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2018-06-22 05:10:32,383 INFO ]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:10:32,383 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:10:32,383 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 05:10:32,390 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 05:10:32,450 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2018-06-22 05:10:32,450 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:10:32,455 INFO ]: Computing forward predicates... [2018-06-22 05:10:37,527 WARN ]: Spent 441.00 ms on a formula simplification. DAG size of input: 344 DAG size of output: 25 [2018-06-22 05:10:45,169 WARN ]: Spent 144.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 25 Received shutdown request... [2018-06-22 05:10:52,541 INFO ]: Timeout while computing interpolants [2018-06-22 05:10:52,742 WARN ]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:10:52,742 WARN ]: Verification canceled [2018-06-22 05:10:52,746 WARN ]: Timeout [2018-06-22 05:10:52,746 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:10:52 BoogieIcfgContainer [2018-06-22 05:10:52,746 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 05:10:52,747 INFO ]: Toolchain (without parser) took 57557.51 ms. Allocated memory was 301.5 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 254.9 MB in the beginning and 408.6 MB in the end (delta: -153.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 05:10:52,748 INFO ]: SmtParser took 0.10 ms. Allocated memory is still 301.5 MB. Free memory is still 266.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 05:10:52,748 INFO ]: ChcToBoogie took 69.16 ms. Allocated memory is still 301.5 MB. Free memory was 254.9 MB in the beginning and 252.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:10:52,748 INFO ]: Boogie Preprocessor took 49.75 ms. Allocated memory is still 301.5 MB. Free memory was 252.9 MB in the beginning and 251.9 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 05:10:52,749 INFO ]: RCFGBuilder took 206.02 ms. Allocated memory is still 301.5 MB. Free memory was 251.9 MB in the beginning and 241.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:10:52,753 INFO ]: TraceAbstraction took 57218.31 ms. Allocated memory was 301.5 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 241.9 MB in the beginning and 408.6 MB in the end (delta: -166.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 05:10:52,757 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 301.5 MB. Free memory is still 266.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 69.16 ms. Allocated memory is still 301.5 MB. Free memory was 254.9 MB in the beginning and 252.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 49.75 ms. Allocated memory is still 301.5 MB. Free memory was 252.9 MB in the beginning and 251.9 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 206.02 ms. Allocated memory is still 301.5 MB. Free memory was 251.9 MB in the beginning and 241.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 57218.31 ms. Allocated memory was 301.5 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 241.9 MB in the beginning and 408.6 MB in the end (delta: -166.7 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 15 with TraceHistMax 7, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 12 quantified variables from 18 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 57.1s OverallTime, 7 OverallIterations, 7 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 11 SDslu, 125 SDs, 0 SdLazy, 51 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 37 SyntacticMatches, 11 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 0.5s SatisfiabilityAnalysisTime, 32.1s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 3467 SizeOfPredicates, 20 NumberOfNonLiveVariables, 796 ConjunctsInSsa, 173 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/92 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/bind_expands_vars2.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_05-10-52-768.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/bind_expands_vars2.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_05-10-52-768.csv Completed graceful shutdown