java -Xss1g -Xmx8000000000 -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-comp18-benchmarks/lra/chc-lra-0022.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-20 23:03:34,378 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-20 23:03:34,380 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-20 23:03:34,391 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-20 23:03:34,392 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-20 23:03:34,393 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-20 23:03:34,394 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-20 23:03:34,398 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-20 23:03:34,400 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-20 23:03:34,402 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-20 23:03:34,405 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-20 23:03:34,406 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-20 23:03:34,407 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-20 23:03:34,408 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-20 23:03:34,409 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-20 23:03:34,409 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-20 23:03:34,411 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-20 23:03:34,417 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-20 23:03:34,430 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-20 23:03:34,431 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-20 23:03:34,432 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-20 23:03:34,434 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-20 23:03:34,434 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-20 23:03:34,435 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-20 23:03:34,435 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-20 23:03:34,436 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-20 23:03:34,437 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-20 23:03:34,438 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-20 23:03:34,439 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-20 23:03:34,442 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-20 23:03:34,443 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-20 23:03:34,444 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-20 23:03:34,444 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-20 23:03:34,445 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-20 23:03:34,445 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-20 23:03:34,446 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-20 23:03:34,462 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-20 23:03:34,462 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-20 23:03:34,463 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-20 23:03:34,463 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-20 23:03:34,464 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-20 23:03:34,464 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-20 23:03:34,464 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-20 23:03:34,464 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-20 23:03:34,465 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-20 23:03:34,465 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-20 23:03:34,465 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-20 23:03:34,465 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-20 23:03:34,465 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-20 23:03:34,466 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-20 23:03:34,466 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-20 23:03:34,466 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-20 23:03:34,466 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-20 23:03:34,468 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-20 23:03:34,468 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-20 23:03:34,529 INFO ]: Repository-Root is: /tmp [2018-06-20 23:03:34,546 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-20 23:03:34,554 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-20 23:03:34,555 INFO ]: Initializing SmtParser... [2018-06-20 23:03:34,555 INFO ]: SmtParser initialized [2018-06-20 23:03:34,556 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp18-benchmarks/lra/chc-lra-0022.smt2 [2018-06-20 23:03:34,557 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 [2018-06-20 23:03:34,637 INFO ]: Executing SMT file /storage/chc-comp18-benchmarks/lra/chc-lra-0022.smt2 unknown [2018-06-20 23:03:35,109 INFO ]: Succesfully executed SMT file /storage/chc-comp18-benchmarks/lra/chc-lra-0022.smt2 [2018-06-20 23:03:35,114 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-20 23:03:35,129 INFO ]: Walking toolchain with 4 elements. [2018-06-20 23:03:35,129 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-20 23:03:35,129 INFO ]: Initializing ChcToBoogie... [2018-06-20 23:03:35,129 INFO ]: ChcToBoogie initialized [2018-06-20 23:03:35,133 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 20.06 11:03:35" (1/1) ... [2018-06-20 23:03:35,199 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:03:35 Unit [2018-06-20 23:03:35,199 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-20 23:03:35,199 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-20 23:03:35,199 INFO ]: Initializing Boogie Preprocessor... [2018-06-20 23:03:35,199 INFO ]: Boogie Preprocessor initialized [2018-06-20 23:03:35,231 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:03:35" (1/1) ... [2018-06-20 23:03:35,231 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:03:35" (1/1) ... [2018-06-20 23:03:35,249 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:03:35" (1/1) ... [2018-06-20 23:03:35,249 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:03:35" (1/1) ... [2018-06-20 23:03:35,261 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:03:35" (1/1) ... [2018-06-20 23:03:35,262 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:03:35" (1/1) ... [2018-06-20 23:03:35,265 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:03:35" (1/1) ... [2018-06-20 23:03:35,270 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-20 23:03:35,270 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-20 23:03:35,270 INFO ]: Initializing RCFGBuilder... [2018-06-20 23:03:35,270 INFO ]: RCFGBuilder initialized [2018-06-20 23:03:35,271 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:03:35" (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) [2018-06-20 23:03:35,287 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-20 23:03:35,287 INFO ]: Found specification of procedure gotoProc [2018-06-20 23:03:35,287 INFO ]: Found implementation of procedure gotoProc [2018-06-20 23:03:35,287 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-20 23:03:35,287 INFO ]: Found specification of procedure Ultimate.START [2018-06-20 23:03:35,287 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 [2018-06-20 23:03:35,739 INFO ]: Using library mode [2018-06-20 23:03:35,740 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 11:03:35 BoogieIcfgContainer [2018-06-20 23:03:35,740 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-20 23:03:35,742 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-20 23:03:35,742 INFO ]: Initializing TraceAbstraction... [2018-06-20 23:03:35,750 INFO ]: TraceAbstraction initialized [2018-06-20 23:03:35,750 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 20.06 11:03:35" (1/3) ... [2018-06-20 23:03:35,751 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14055f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 20.06 11:03:35, skipping insertion in model container [2018-06-20 23:03:35,751 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:03:35" (2/3) ... [2018-06-20 23:03:35,752 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14055f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 11:03:35, skipping insertion in model container [2018-06-20 23:03:35,752 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 11:03:35" (3/3) ... [2018-06-20 23:03:35,754 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-20 23:03:35,764 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-20 23:03:35,773 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-20 23:03:35,829 INFO ]: Using default assertion order modulation [2018-06-20 23:03:35,830 INFO ]: Interprodecural is true [2018-06-20 23:03:35,830 INFO ]: Hoare is false [2018-06-20 23:03:35,830 INFO ]: Compute interpolants for FPandBP [2018-06-20 23:03:35,830 INFO ]: Backedges is TWOTRACK [2018-06-20 23:03:35,830 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-20 23:03:35,830 INFO ]: Difference is false [2018-06-20 23:03:35,830 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-20 23:03:35,830 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-20 23:03:35,846 INFO ]: Start isEmpty. Operand 10 states. [2018-06-20 23:03:35,861 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-20 23:03:35,861 INFO ]: Found error trace [2018-06-20 23:03:35,862 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-20 23:03:35,862 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-20 23:03:35,867 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-20 23:03:35,869 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-20 23:03:35,870 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-20 23:03:35,912 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:03:35,913 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-20 23:03:35,913 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:03:36,025 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:03:36,358 WARN ]: Spent 179.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2018-06-20 23:03:36,361 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-20 23:03:36,365 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-20 23:03:36,365 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-20 23:03:36,367 INFO ]: Interpolant automaton has 3 states [2018-06-20 23:03:36,378 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-20 23:03:36,378 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-20 23:03:36,380 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-20 23:03:36,463 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-20 23:03:36,463 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-20 23:03:36,464 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-20 23:03:36,465 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-20 23:03:36,465 INFO ]: Finished accepts. some prefix is accepted. [2018-06-20 23:03:36,473 INFO ]: With dead ends: 9 [2018-06-20 23:03:36,473 INFO ]: Without dead ends: 9 [2018-06-20 23:03:36,474 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-20 23:03:36,492 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-20 23:03:36,545 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-20 23:03:36,546 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-20 23:03:36,547 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-20 23:03:36,555 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-20 23:03:36,555 INFO ]: Finished accepts. word is rejected. [2018-06-20 23:03:36,555 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-20 23:03:36,555 INFO ]: Interpolant automaton has 3 states. [2018-06-20 23:03:36,555 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-20 23:03:36,556 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-20 23:03:36,556 INFO ]: Found error trace [2018-06-20 23:03:36,556 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-20 23:03:36,556 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-20 23:03:36,556 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-20 23:03:36,556 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-20 23:03:36,556 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-20 23:03:36,557 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:03:36,557 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-20 23:03:36,557 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:03:36,777 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:03:37,148 WARN ]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-06-20 23:03:37,149 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-20 23:03:37,149 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-20 23:03:37,150 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 [2018-06-20 23:03:37,160 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-20 23:03:37,365 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:03:37,382 INFO ]: Computing forward predicates... [2018-06-20 23:03:39,754 WARN ]: Spent 237.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2018-06-20 23:03:39,818 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-20 23:03:39,841 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-20 23:03:39,841 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-20 23:03:39,842 INFO ]: Interpolant automaton has 5 states [2018-06-20 23:03:39,842 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-20 23:03:39,842 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-20 23:03:39,842 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-20 23:03:39,884 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-20 23:03:39,884 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-20 23:03:39,884 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-20 23:03:39,885 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-20 23:03:39,885 INFO ]: Finished accepts. some prefix is accepted. [2018-06-20 23:03:39,885 INFO ]: With dead ends: 10 [2018-06-20 23:03:39,885 INFO ]: Without dead ends: 10 [2018-06-20 23:03:39,886 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-20 23:03:39,886 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-20 23:03:39,887 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-20 23:03:39,887 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-20 23:03:39,887 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-20 23:03:39,887 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-20 23:03:39,887 INFO ]: Finished accepts. word is rejected. [2018-06-20 23:03:39,887 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-20 23:03:39,887 INFO ]: Interpolant automaton has 5 states. [2018-06-20 23:03:39,887 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-20 23:03:39,888 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-20 23:03:39,888 INFO ]: Found error trace [2018-06-20 23:03:39,888 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-20 23:03:39,888 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-20 23:03:39,888 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-20 23:03:39,888 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-20 23:03:39,888 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-20 23:03:39,889 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:03:39,889 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-20 23:03:39,889 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:03:40,050 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:03:40,551 WARN ]: Spent 136.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2018-06-20 23:03:40,552 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-20 23:03:40,552 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-20 23:03:40,552 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 [2018-06-20 23:03:40,572 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-20 23:03:40,736 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-20 23:03:40,736 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:03:40,750 INFO ]: Computing forward predicates... [2018-06-20 23:03:45,009 WARN ]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 49 Received shutdown request... [2018-06-20 23:04:48,814 INFO ]: Timeout while computing interpolants [2018-06-20 23:04:49,015 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-20 23:04:49,015 WARN ]: Verification canceled [2018-06-20 23:04:49,018 WARN ]: Timeout [2018-06-20 23:04:49,019 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.06 11:04:49 BoogieIcfgContainer [2018-06-20 23:04:49,019 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-20 23:04:49,019 INFO ]: Toolchain (without parser) took 73905.25 ms. Allocated memory was 307.2 MB in the beginning and 3.9 GB in the end (delta: 3.6 GB). Free memory was 250.7 MB in the beginning and 1.8 GB in the end (delta: -1.6 GB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2018-06-20 23:04:49,023 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 307.2 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2018-06-20 23:04:49,024 INFO ]: ChcToBoogie took 69.81 ms. Allocated memory is still 307.2 MB. Free memory was 250.7 MB in the beginning and 247.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2018-06-20 23:04:49,024 INFO ]: Boogie Preprocessor took 70.25 ms. Allocated memory is still 307.2 MB. Free memory was 247.7 MB in the beginning and 245.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2018-06-20 23:04:49,025 INFO ]: RCFGBuilder took 470.07 ms. Allocated memory is still 307.2 MB. Free memory was 245.7 MB in the beginning and 218.7 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-06-20 23:04:49,025 INFO ]: TraceAbstraction took 73276.73 ms. Allocated memory was 307.2 MB in the beginning and 3.9 GB in the end (delta: 3.6 GB). Free memory was 218.7 MB in the beginning and 1.8 GB in the end (delta: -1.6 GB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-06-20 23:04:49,028 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 307.2 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * ChcToBoogie took 69.81 ms. Allocated memory is still 307.2 MB. Free memory was 250.7 MB in the beginning and 247.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.25 ms. Allocated memory is still 307.2 MB. Free memory was 247.7 MB in the beginning and 245.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 470.07 ms. Allocated memory is still 307.2 MB. Free memory was 245.7 MB in the beginning and 218.7 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 73276.73 ms. Allocated memory was 307.2 MB in the beginning and 3.9 GB in the end (delta: 3.6 GB). Free memory was 218.7 MB in the beginning and 1.8 GB in the end (delta: -1.6 GB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 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 10 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was transforming 0 conjuction. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 73.2s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 20 SDs, 0 SdLazy, 14 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, 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, 0.4s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 1000 SizeOfPredicates, 5 NumberOfNonLiveVariables, 431 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 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/chc-lra-0022.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-20_23-04-49-038.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/chc-lra-0022.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-20_23-04-49-038.csv Completed graceful shutdown