java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/hysteresis_3.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 18:36:21,858 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 18:36:21,860 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 18:36:21,874 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 18:36:21,875 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 18:36:21,876 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 18:36:21,877 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 18:36:21,879 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 18:36:21,880 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 18:36:21,881 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 18:36:21,883 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 18:36:21,884 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 18:36:21,884 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 18:36:21,885 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 18:36:21,886 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 18:36:21,887 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 18:36:21,890 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 18:36:21,899 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 18:36:21,901 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 18:36:21,901 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 18:36:21,902 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 18:36:21,904 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 18:36:21,905 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 18:36:21,909 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 18:36:21,910 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 18:36:21,911 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 18:36:21,911 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 18:36:21,912 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 18:36:21,916 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 18:36:21,916 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 18:36:21,917 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 18:36:21,918 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 18:36:21,918 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 18:36:21,919 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 18:36:21,919 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 18:36:21,919 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 18:36:21,939 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 18:36:21,939 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 18:36:21,940 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 18:36:21,940 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 18:36:21,941 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 18:36:21,941 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 18:36:21,941 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 18:36:21,941 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 18:36:21,941 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 18:36:21,942 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 18:36:21,943 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 18:36:21,943 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 18:36:21,943 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 18:36:21,943 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 18:36:21,943 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 18:36:21,944 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 18:36:21,944 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 18:36:21,944 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 18:36:21,944 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 18:36:21,945 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 18:36:21,947 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 18:36:21,996 INFO ]: Repository-Root is: /tmp [2018-06-22 18:36:22,009 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 18:36:22,015 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 18:36:22,017 INFO ]: Initializing SmtParser... [2018-06-22 18:36:22,017 INFO ]: SmtParser initialized [2018-06-22 18:36:22,018 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/hysteresis_3.smt2 [2018-06-22 18:36:22,019 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 18:36:22,112 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/hysteresis_3.smt2 unknown [2018-06-22 18:36:22,398 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/hysteresis_3.smt2 [2018-06-22 18:36:22,408 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 18:36:22,424 INFO ]: Walking toolchain with 4 elements. [2018-06-22 18:36:22,424 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 18:36:22,424 INFO ]: Initializing ChcToBoogie... [2018-06-22 18:36:22,425 INFO ]: ChcToBoogie initialized [2018-06-22 18:36:22,428 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 06:36:22" (1/1) ... [2018-06-22 18:36:22,480 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:36:22 Unit [2018-06-22 18:36:22,480 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 18:36:22,481 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 18:36:22,481 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 18:36:22,481 INFO ]: Boogie Preprocessor initialized [2018-06-22 18:36:22,506 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:36:22" (1/1) ... [2018-06-22 18:36:22,506 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:36:22" (1/1) ... [2018-06-22 18:36:22,518 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:36:22" (1/1) ... [2018-06-22 18:36:22,518 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:36:22" (1/1) ... [2018-06-22 18:36:22,522 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:36:22" (1/1) ... [2018-06-22 18:36:22,523 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:36:22" (1/1) ... [2018-06-22 18:36:22,534 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:36:22" (1/1) ... [2018-06-22 18:36:22,536 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 18:36:22,537 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 18:36:22,537 INFO ]: Initializing RCFGBuilder... [2018-06-22 18:36:22,537 INFO ]: RCFGBuilder initialized [2018-06-22 18:36:22,538 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:36:22" (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 18:36:22,552 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 18:36:22,552 INFO ]: Found specification of procedure False [2018-06-22 18:36:22,552 INFO ]: Found implementation of procedure False [2018-06-22 18:36:22,553 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 18:36:22,553 INFO ]: Found specification of procedure state [2018-06-22 18:36:22,553 INFO ]: Found implementation of procedure state [2018-06-22 18:36:22,553 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 18:36:22,553 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 18:36:22,553 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 18:36:22,825 INFO ]: Using library mode [2018-06-22 18:36:22,826 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:36:22 BoogieIcfgContainer [2018-06-22 18:36:22,826 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 18:36:22,827 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 18:36:22,827 INFO ]: Initializing TraceAbstraction... [2018-06-22 18:36:22,830 INFO ]: TraceAbstraction initialized [2018-06-22 18:36:22,831 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 06:36:22" (1/3) ... [2018-06-22 18:36:22,831 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bbf20be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 06:36:22, skipping insertion in model container [2018-06-22 18:36:22,831 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:36:22" (2/3) ... [2018-06-22 18:36:22,832 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bbf20be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 06:36:22, skipping insertion in model container [2018-06-22 18:36:22,832 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:36:22" (3/3) ... [2018-06-22 18:36:22,833 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 18:36:22,842 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 18:36:22,850 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 18:36:22,887 INFO ]: Using default assertion order modulation [2018-06-22 18:36:22,887 INFO ]: Interprodecural is true [2018-06-22 18:36:22,887 INFO ]: Hoare is false [2018-06-22 18:36:22,887 INFO ]: Compute interpolants for FPandBP [2018-06-22 18:36:22,887 INFO ]: Backedges is TWOTRACK [2018-06-22 18:36:22,888 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 18:36:22,888 INFO ]: Difference is false [2018-06-22 18:36:22,888 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 18:36:22,888 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 18:36:22,900 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 18:36:22,913 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 18:36:22,913 INFO ]: Found error trace [2018-06-22 18:36:22,915 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 18:36:22,915 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 18:36:22,921 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 18:36:22,923 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 18:36:22,923 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 18:36:22,959 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:36:22,959 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:36:22,959 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:36:23,015 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:36:23,117 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 18:36:23,119 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 18:36:23,119 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 18:36:23,120 INFO ]: Interpolant automaton has 4 states [2018-06-22 18:36:23,130 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 18:36:23,131 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 18:36:23,132 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 18:36:23,240 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 18:36:23,241 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 18:36:23,243 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 18:36:23,244 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 18:36:23,245 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 18:36:23,257 INFO ]: With dead ends: 13 [2018-06-22 18:36:23,257 INFO ]: Without dead ends: 13 [2018-06-22 18:36:23,259 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 18:36:23,272 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 18:36:23,292 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 18:36:23,293 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 18:36:23,294 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 18:36:23,295 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 18:36:23,295 INFO ]: Finished accepts. word is rejected. [2018-06-22 18:36:23,295 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 18:36:23,295 INFO ]: Interpolant automaton has 4 states. [2018-06-22 18:36:23,295 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 18:36:23,296 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 18:36:23,296 INFO ]: Found error trace [2018-06-22 18:36:23,296 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 18:36:23,297 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 18:36:23,297 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 18:36:23,297 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 18:36:23,297 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 18:36:23,298 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:36:23,298 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:36:23,298 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:36:23,354 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:36:23,661 WARN ]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 18:36:23,744 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 18:36:23,744 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 18:36:23,744 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 18:36:23,753 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:36:23,818 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:36:23,825 INFO ]: Computing forward predicates... [2018-06-22 18:36:24,015 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 18:36:24,036 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 18:36:24,036 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 18:36:24,037 INFO ]: Interpolant automaton has 8 states [2018-06-22 18:36:24,037 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 18:36:24,037 INFO ]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-22 18:36:24,037 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 18:36:24,492 WARN ]: Spent 288.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-06-22 18:36:24,589 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 18:36:24,589 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 18:36:24,589 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 18:36:24,589 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 18:36:24,589 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 18:36:24,590 INFO ]: With dead ends: 15 [2018-06-22 18:36:24,590 INFO ]: Without dead ends: 15 [2018-06-22 18:36:24,591 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-06-22 18:36:24,591 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 18:36:24,593 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 18:36:24,593 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 18:36:24,593 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 18:36:24,593 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 18:36:24,593 INFO ]: Finished accepts. word is rejected. [2018-06-22 18:36:24,593 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 18:36:24,593 INFO ]: Interpolant automaton has 8 states. [2018-06-22 18:36:24,594 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 18:36:24,594 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 18:36:24,594 INFO ]: Found error trace [2018-06-22 18:36:24,594 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 18:36:24,594 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 18:36:24,594 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 18:36:24,594 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 18:36:24,594 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 18:36:24,595 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:36:24,595 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:36:24,595 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:36:24,654 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:36:25,194 WARN ]: Spent 367.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2018-06-22 18:36:25,561 WARN ]: Spent 360.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2018-06-22 18:36:25,887 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 18:36:25,887 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 18:36:25,887 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 18:36:25,902 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 18:36:25,959 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 18:36:25,959 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:36:25,965 INFO ]: Computing forward predicates... [2018-06-22 18:36:26,449 WARN ]: Spent 262.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 28 [2018-06-22 18:36:26,525 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 18:36:27,341 WARN ]: Simplifying disjunction of 120960 conjuctions. This might take some time... Received shutdown request... [2018-06-22 18:37:43,832 INFO ]: Timeout while computing interpolants [2018-06-22 18:37:44,032 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 18:37:44,032 WARN ]: Verification canceled [2018-06-22 18:37:44,036 WARN ]: Timeout [2018-06-22 18:37:44,036 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 06:37:44 BoogieIcfgContainer [2018-06-22 18:37:44,036 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 18:37:44,037 INFO ]: Toolchain (without parser) took 81628.07 ms. Allocated memory was 304.1 MB in the beginning and 1.2 GB in the end (delta: 945.8 MB). Free memory was 256.4 MB in the beginning and 709.6 MB in the end (delta: -453.2 MB). Peak memory consumption was 1.4 GB. Max. memory is 3.6 GB. [2018-06-22 18:37:44,038 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 304.1 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 18:37:44,038 INFO ]: ChcToBoogie took 56.00 ms. Allocated memory is still 304.1 MB. Free memory was 255.4 MB in the beginning and 253.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 18:37:44,039 INFO ]: Boogie Preprocessor took 55.39 ms. Allocated memory is still 304.1 MB. Free memory was 253.4 MB in the beginning and 252.4 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 18:37:44,039 INFO ]: RCFGBuilder took 289.15 ms. Allocated memory is still 304.1 MB. Free memory was 252.4 MB in the beginning and 240.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 3.6 GB. [2018-06-22 18:37:44,040 INFO ]: TraceAbstraction took 81209.04 ms. Allocated memory was 304.1 MB in the beginning and 1.2 GB in the end (delta: 945.8 MB). Free memory was 240.4 MB in the beginning and 709.6 MB in the end (delta: -469.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 18:37:44,043 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 304.1 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 56.00 ms. Allocated memory is still 304.1 MB. Free memory was 255.4 MB in the beginning and 253.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 55.39 ms. Allocated memory is still 304.1 MB. Free memory was 253.4 MB in the beginning and 252.4 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 289.15 ms. Allocated memory is still 304.1 MB. Free memory was 252.4 MB in the beginning and 240.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 81209.04 ms. Allocated memory was 304.1 MB in the beginning and 1.2 GB in the end (delta: 945.8 MB). Free memory was 240.4 MB in the beginning and 709.6 MB in the end (delta: -469.3 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 18 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 120960 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 81.1s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 7 SDslu, 37 SDs, 0 SdLazy, 26 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=2, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 600 SizeOfPredicates, 6 NumberOfNonLiveVariables, 154 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/6 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/hysteresis_3.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_18-37-44-058.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/hysteresis_3.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_18-37-44-058.csv Completed graceful shutdown