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/cav12/s3_srvr_9.cil.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 04:42:48,824 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 04:42:48,827 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 04:42:48,840 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 04:42:48,840 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 04:42:48,841 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 04:42:48,844 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 04:42:48,847 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 04:42:48,848 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 04:42:48,850 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 04:42:48,851 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 04:42:48,851 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 04:42:48,852 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 04:42:48,853 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 04:42:48,856 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 04:42:48,857 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 04:42:48,858 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 04:42:48,869 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 04:42:48,870 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 04:42:48,871 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 04:42:48,872 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 04:42:48,878 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 04:42:48,879 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 04:42:48,879 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 04:42:48,880 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 04:42:48,880 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 04:42:48,883 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 04:42:48,884 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 04:42:48,885 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 04:42:48,885 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 04:42:48,886 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 04:42:48,886 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 04:42:48,887 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 04:42:48,891 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 04:42:48,892 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 04:42:48,892 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 04:42:48,912 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 04:42:48,913 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 04:42:48,913 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 04:42:48,913 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 04:42:48,914 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 04:42:48,914 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 04:42:48,915 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 04:42:48,915 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 04:42:48,915 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:42:48,915 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 04:42:48,915 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 04:42:48,915 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 04:42:48,916 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 04:42:48,919 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 04:42:48,919 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 04:42:48,919 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 04:42:48,919 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 04:42:48,921 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 04:42:48,921 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 04:42:48,972 INFO ]: Repository-Root is: /tmp [2018-06-22 04:42:48,988 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 04:42:48,993 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 04:42:48,995 INFO ]: Initializing SmtParser... [2018-06-22 04:42:48,995 INFO ]: SmtParser initialized [2018-06-22 04:42:48,996 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_9.cil.smt2 [2018-06-22 04:42:48,997 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 04:42:49,093 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_9.cil.smt2 unknown [2018-06-22 04:42:49,609 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_9.cil.smt2 [2018-06-22 04:42:49,622 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 04:42:49,632 INFO ]: Walking toolchain with 4 elements. [2018-06-22 04:42:49,632 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 04:42:49,632 INFO ]: Initializing ChcToBoogie... [2018-06-22 04:42:49,633 INFO ]: ChcToBoogie initialized [2018-06-22 04:42:49,636 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:42:49" (1/1) ... [2018-06-22 04:42:49,746 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:42:49 Unit [2018-06-22 04:42:49,746 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 04:42:49,747 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 04:42:49,747 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 04:42:49,747 INFO ]: Boogie Preprocessor initialized [2018-06-22 04:42:49,770 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:42:49" (1/1) ... [2018-06-22 04:42:49,770 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:42:49" (1/1) ... [2018-06-22 04:42:49,795 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:42:49" (1/1) ... [2018-06-22 04:42:49,795 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:42:49" (1/1) ... [2018-06-22 04:42:49,828 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:42:49" (1/1) ... [2018-06-22 04:42:49,833 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:42:49" (1/1) ... [2018-06-22 04:42:49,838 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:42:49" (1/1) ... [2018-06-22 04:42:49,848 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 04:42:49,848 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 04:42:49,848 INFO ]: Initializing RCFGBuilder... [2018-06-22 04:42:49,848 INFO ]: RCFGBuilder initialized [2018-06-22 04:42:49,849 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:42:49" (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 04:42:49,867 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 04:42:49,867 INFO ]: Found specification of procedure gotoProc [2018-06-22 04:42:49,867 INFO ]: Found implementation of procedure gotoProc [2018-06-22 04:42:49,867 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 04:42:49,867 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 04:42:49,867 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 04:42:50,269 INFO ]: Using library mode [2018-06-22 04:42:50,273 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:42:50 BoogieIcfgContainer [2018-06-22 04:42:50,273 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 04:42:50,274 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 04:42:50,274 INFO ]: Initializing TraceAbstraction... [2018-06-22 04:42:50,280 INFO ]: TraceAbstraction initialized [2018-06-22 04:42:50,280 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:42:49" (1/3) ... [2018-06-22 04:42:50,281 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e20cd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 04:42:50, skipping insertion in model container [2018-06-22 04:42:50,281 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:42:49" (2/3) ... [2018-06-22 04:42:50,281 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e20cd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:42:50, skipping insertion in model container [2018-06-22 04:42:50,281 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:42:50" (3/3) ... [2018-06-22 04:42:50,284 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 04:42:50,293 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 04:42:50,303 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 04:42:50,355 INFO ]: Using default assertion order modulation [2018-06-22 04:42:50,356 INFO ]: Interprodecural is true [2018-06-22 04:42:50,356 INFO ]: Hoare is false [2018-06-22 04:42:50,356 INFO ]: Compute interpolants for FPandBP [2018-06-22 04:42:50,356 INFO ]: Backedges is TWOTRACK [2018-06-22 04:42:50,356 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 04:42:50,356 INFO ]: Difference is false [2018-06-22 04:42:50,356 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 04:42:50,356 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 04:42:50,372 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 04:42:50,387 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 04:42:50,387 INFO ]: Found error trace [2018-06-22 04:42:50,388 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:42:50,388 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:42:50,393 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 04:42:50,394 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:42:50,394 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:42:50,427 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:42:50,427 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:42:50,427 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:42:50,498 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:42:50,577 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:42:50,579 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 04:42:50,579 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 04:42:50,580 INFO ]: Interpolant automaton has 3 states [2018-06-22 04:42:50,592 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 04:42:50,592 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 04:42:50,594 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 04:42:50,706 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:42:50,706 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 04:42:50,708 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 04:42:50,709 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 04:42:50,709 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:42:50,719 INFO ]: With dead ends: 9 [2018-06-22 04:42:50,719 INFO ]: Without dead ends: 9 [2018-06-22 04:42:50,721 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 04:42:50,737 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 04:42:50,753 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 04:42:50,754 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 04:42:50,755 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 04:42:50,756 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 04:42:50,756 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:42:50,756 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 04:42:50,756 INFO ]: Interpolant automaton has 3 states. [2018-06-22 04:42:50,756 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 04:42:50,756 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 04:42:50,756 INFO ]: Found error trace [2018-06-22 04:42:50,756 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:42:50,757 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:42:50,757 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 04:42:50,757 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:42:50,757 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:42:50,758 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:42:50,758 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:42:50,758 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:42:50,914 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:42:51,154 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:42:51,154 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:42:51,154 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 04:42:51,170 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 04:42:51,274 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:42:51,289 INFO ]: Computing forward predicates... [2018-06-22 04:42:51,899 WARN ]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 04:42:51,901 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:42:51,922 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:42:51,922 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 04:42:51,922 INFO ]: Interpolant automaton has 5 states [2018-06-22 04:42:51,922 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 04:42:51,922 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 04:42:51,923 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 04:42:52,133 WARN ]: Spent 116.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 5 [2018-06-22 04:42:52,455 WARN ]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 04:42:52,475 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:42:52,475 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 04:42:52,475 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 04:42:52,475 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 04:42:52,475 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:42:52,476 INFO ]: With dead ends: 11 [2018-06-22 04:42:52,476 INFO ]: Without dead ends: 11 [2018-06-22 04:42:52,476 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-06-22 04:42:52,476 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 04:42:52,477 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 04:42:52,477 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 04:42:52,478 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 04:42:52,478 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 04:42:52,478 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:42:52,478 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 04:42:52,478 INFO ]: Interpolant automaton has 5 states. [2018-06-22 04:42:52,478 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 04:42:52,478 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 04:42:52,478 INFO ]: Found error trace [2018-06-22 04:42:52,478 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:42:52,478 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:42:52,479 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 2 times [2018-06-22 04:42:52,479 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:42:52,479 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:42:52,479 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:42:52,479 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:42:52,479 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:42:52,687 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:42:53,224 WARN ]: Spent 165.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 4 [2018-06-22 04:42:53,244 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:42:53,244 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:42:53,244 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:42:53,251 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 04:42:53,432 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 04:42:53,432 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:42:53,444 INFO ]: Computing forward predicates... [2018-06-22 04:42:54,025 WARN ]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 04:42:55,582 WARN ]: Spent 106.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-06-22 04:42:55,586 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:42:55,607 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:42:55,607 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 04:42:55,607 INFO ]: Interpolant automaton has 9 states [2018-06-22 04:42:55,608 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 04:42:55,608 INFO ]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-06-22 04:42:55,608 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 9 states. [2018-06-22 04:42:55,899 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:42:55,899 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 04:42:55,900 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 04:42:55,900 INFO ]: Start accepts. Automaton has 9 states. Word has length 10 [2018-06-22 04:42:55,900 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:42:55,900 INFO ]: With dead ends: 13 [2018-06-22 04:42:55,900 INFO ]: Without dead ends: 13 [2018-06-22 04:42:55,900 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2018-06-22 04:42:55,901 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 04:42:55,901 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 04:42:55,901 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 04:42:55,902 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 04:42:55,902 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-22 04:42:55,902 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:42:55,902 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 04:42:55,902 INFO ]: Interpolant automaton has 9 states. [2018-06-22 04:42:55,902 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 04:42:55,902 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 04:42:55,902 INFO ]: Found error trace [2018-06-22 04:42:55,902 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:42:55,902 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:42:55,902 INFO ]: Analyzing trace with hash -1502133097, now seen corresponding path program 3 times [2018-06-22 04:42:55,902 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:42:55,903 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:42:55,903 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:42:55,903 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:42:55,903 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:42:56,198 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:42:57,002 WARN ]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-22 04:42:57,254 WARN ]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-06-22 04:42:57,270 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:42:57,270 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:42:57,270 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 04:42:57,282 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 04:42:57,553 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 04:42:57,553 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:42:57,576 INFO ]: Computing forward predicates... [2018-06-22 04:42:58,758 WARN ]: Spent 390.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 25 [2018-06-22 04:43:00,009 WARN ]: Spent 667.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 43 [2018-06-22 04:43:23,491 WARN ]: Spent 2.25 s on a formula simplification. DAG size of input: 274 DAG size of output: 87 [2018-06-22 04:43:33,281 WARN ]: Simplifying disjunction of 6053 conjuctions. This might take some time... [2018-06-22 04:43:36,406 INFO ]: Simplified to disjunction of 6053 conjuctions. Received shutdown request... [2018-06-22 04:43:58,098 INFO ]: Timeout while computing interpolants [2018-06-22 04:43:58,298 WARN ]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:43:58,299 WARN ]: Verification canceled [2018-06-22 04:43:58,302 WARN ]: Timeout [2018-06-22 04:43:58,302 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 04:43:58 BoogieIcfgContainer [2018-06-22 04:43:58,302 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 04:43:58,303 INFO ]: Toolchain (without parser) took 68680.10 ms. Allocated memory was 306.2 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 239.6 MB in the beginning and 890.4 MB in the end (delta: -650.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 04:43:58,303 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 306.2 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 04:43:58,304 INFO ]: ChcToBoogie took 114.17 ms. Allocated memory is still 306.2 MB. Free memory was 239.6 MB in the beginning and 236.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:43:58,304 INFO ]: Boogie Preprocessor took 100.86 ms. Allocated memory is still 306.2 MB. Free memory was 236.6 MB in the beginning and 234.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:43:58,305 INFO ]: RCFGBuilder took 424.73 ms. Allocated memory is still 306.2 MB. Free memory was 234.7 MB in the beginning and 201.4 MB in the end (delta: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 3.6 GB. [2018-06-22 04:43:58,305 INFO ]: TraceAbstraction took 68027.66 ms. Allocated memory was 306.2 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 201.4 MB in the beginning and 890.4 MB in the end (delta: -689.0 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 04:43:58,308 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 306.2 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 114.17 ms. Allocated memory is still 306.2 MB. Free memory was 239.6 MB in the beginning and 236.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 100.86 ms. Allocated memory is still 306.2 MB. Free memory was 236.6 MB in the beginning and 234.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 424.73 ms. Allocated memory is still 306.2 MB. Free memory was 234.7 MB in the beginning and 201.4 MB in the end (delta: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 3.6 GB. * TraceAbstraction took 68027.66 ms. Allocated memory was 306.2 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 201.4 MB in the beginning and 890.4 MB in the end (delta: -689.0 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 13 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while XnfDer was eliminating 1599 quantified variables from 86 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 67.9s OverallTime, 4 OverallIterations, 5 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 1 SDslu, 46 SDs, 0 SdLazy, 20 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=3, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 858 SizeOfPredicates, 5 NumberOfNonLiveVariables, 750 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/14 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/s3_srvr_9.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_04-43-58-318.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/s3_srvr_9.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_04-43-58-318.csv Completed graceful shutdown