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-0124.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-20 23:00:40,793 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-20 23:00:40,795 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-20 23:00:40,813 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-20 23:00:40,814 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-20 23:00:40,815 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-20 23:00:40,819 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-20 23:00:40,821 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-20 23:00:40,823 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-20 23:00:40,825 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-20 23:00:40,826 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-20 23:00:40,826 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-20 23:00:40,827 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-20 23:00:40,828 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-20 23:00:40,832 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-20 23:00:40,833 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-20 23:00:40,835 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-20 23:00:40,849 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-20 23:00:40,850 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-20 23:00:40,851 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-20 23:00:40,852 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-20 23:00:40,855 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-20 23:00:40,855 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-20 23:00:40,855 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-20 23:00:40,856 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-20 23:00:40,861 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-20 23:00:40,862 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-20 23:00:40,862 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-20 23:00:40,863 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-20 23:00:40,864 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-20 23:00:40,868 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-20 23:00:40,869 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-20 23:00:40,869 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-20 23:00:40,870 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-20 23:00:40,870 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-20 23:00:40,870 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-20 23:00:40,895 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-20 23:00:40,895 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-20 23:00:40,895 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-20 23:00:40,896 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-20 23:00:40,897 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-20 23:00:40,898 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-20 23:00:40,898 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-20 23:00:40,898 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-20 23:00:40,898 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-20 23:00:40,898 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-20 23:00:40,898 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-20 23:00:40,899 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-20 23:00:40,899 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-20 23:00:40,899 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-20 23:00:40,899 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-20 23:00:40,899 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-20 23:00:40,900 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-20 23:00:40,904 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-20 23:00:40,904 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-20 23:00:40,953 INFO ]: Repository-Root is: /tmp [2018-06-20 23:00:40,969 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-20 23:00:40,973 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-20 23:00:40,974 INFO ]: Initializing SmtParser... [2018-06-20 23:00:40,975 INFO ]: SmtParser initialized [2018-06-20 23:00:40,975 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp18-benchmarks/lra/chc-lra-0124.smt2 [2018-06-20 23:00:40,977 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 23:00:41,074 INFO ]: Executing SMT file /storage/chc-comp18-benchmarks/lra/chc-lra-0124.smt2 unknown [2018-06-20 23:00:42,902 INFO ]: Succesfully executed SMT file /storage/chc-comp18-benchmarks/lra/chc-lra-0124.smt2 [2018-06-20 23:00:42,908 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-20 23:00:42,914 INFO ]: Walking toolchain with 4 elements. [2018-06-20 23:00:42,915 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-20 23:00:42,915 INFO ]: Initializing ChcToBoogie... [2018-06-20 23:00:42,915 INFO ]: ChcToBoogie initialized [2018-06-20 23:00:42,919 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 20.06 11:00:42" (1/1) ... [2018-06-20 23:00:43,031 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:00:43 Unit [2018-06-20 23:00:43,031 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-20 23:00:43,032 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-20 23:00:43,032 INFO ]: Initializing Boogie Preprocessor... [2018-06-20 23:00:43,032 INFO ]: Boogie Preprocessor initialized [2018-06-20 23:00:43,053 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:00:43" (1/1) ... [2018-06-20 23:00:43,053 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:00:43" (1/1) ... [2018-06-20 23:00:43,105 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:00:43" (1/1) ... [2018-06-20 23:00:43,105 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:00:43" (1/1) ... [2018-06-20 23:00:43,160 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:00:43" (1/1) ... [2018-06-20 23:00:43,162 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:00:43" (1/1) ... [2018-06-20 23:00:43,178 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:00:43" (1/1) ... [2018-06-20 23:00:43,195 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-20 23:00:43,196 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-20 23:00:43,196 INFO ]: Initializing RCFGBuilder... [2018-06-20 23:00:43,196 INFO ]: RCFGBuilder initialized [2018-06-20 23:00:43,197 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:00:43" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-20 23:00:43,207 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-20 23:00:43,207 INFO ]: Found specification of procedure gotoProc [2018-06-20 23:00:43,207 INFO ]: Found implementation of procedure gotoProc [2018-06-20 23:00:43,207 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-20 23:00:43,207 INFO ]: Found specification of procedure Ultimate.START [2018-06-20 23:00:43,207 INFO ]: Found implementation of procedure Ultimate.START [2018-06-20 23:00:45,858 INFO ]: Using library mode [2018-06-20 23:00:45,858 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 11:00:45 BoogieIcfgContainer [2018-06-20 23:00:45,858 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-20 23:00:45,860 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-20 23:00:45,860 INFO ]: Initializing TraceAbstraction... [2018-06-20 23:00:45,862 INFO ]: TraceAbstraction initialized [2018-06-20 23:00:45,863 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 20.06 11:00:42" (1/3) ... [2018-06-20 23:00:45,863 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f28f33b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 20.06 11:00:45, skipping insertion in model container [2018-06-20 23:00:45,863 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:00:43" (2/3) ... [2018-06-20 23:00:45,864 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f28f33b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 11:00:45, skipping insertion in model container [2018-06-20 23:00:45,864 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 11:00:45" (3/3) ... [2018-06-20 23:00:45,865 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-20 23:00:45,930 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-20 23:00:45,938 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-20 23:00:45,990 INFO ]: Using default assertion order modulation [2018-06-20 23:00:45,991 INFO ]: Interprodecural is true [2018-06-20 23:00:45,991 INFO ]: Hoare is false [2018-06-20 23:00:45,991 INFO ]: Compute interpolants for FPandBP [2018-06-20 23:00:45,991 INFO ]: Backedges is TWOTRACK [2018-06-20 23:00:45,991 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-20 23:00:45,991 INFO ]: Difference is false [2018-06-20 23:00:45,991 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-20 23:00:45,991 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-20 23:00:46,005 INFO ]: Start isEmpty. Operand 10 states. [2018-06-20 23:00:46,018 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-20 23:00:46,018 INFO ]: Found error trace [2018-06-20 23:00:46,019 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-20 23:00:46,019 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-20 23:00:46,026 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-20 23:00:46,028 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-20 23:00:46,028 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-20 23:00:46,072 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:00:46,072 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-20 23:00:46,072 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:00:46,287 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:00:46,473 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-20 23:00:46,475 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-20 23:00:46,475 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-20 23:00:46,477 INFO ]: Interpolant automaton has 3 states [2018-06-20 23:00:46,492 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-20 23:00:46,492 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-20 23:00:46,496 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-20 23:00:46,743 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-20 23:00:46,744 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-20 23:00:46,745 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-20 23:00:46,746 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-20 23:00:46,746 INFO ]: Finished accepts. some prefix is accepted. [2018-06-20 23:00:46,755 INFO ]: With dead ends: 9 [2018-06-20 23:00:46,755 INFO ]: Without dead ends: 9 [2018-06-20 23:00:46,761 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 [2018-06-20 23:00:46,775 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-20 23:00:46,789 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-20 23:00:46,791 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-20 23:00:46,791 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-20 23:00:46,793 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-20 23:00:46,793 INFO ]: Finished accepts. word is rejected. [2018-06-20 23:00:46,793 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-20 23:00:46,793 INFO ]: Interpolant automaton has 3 states. [2018-06-20 23:00:46,793 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-20 23:00:46,793 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-20 23:00:46,793 INFO ]: Found error trace [2018-06-20 23:00:46,793 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-20 23:00:46,793 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-20 23:00:46,793 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-20 23:00:46,793 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-20 23:00:46,794 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-20 23:00:46,794 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:00:46,794 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-20 23:00:46,794 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:00:47,297 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:00:48,038 WARN ]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-20 23:00:48,108 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-20 23:00:48,109 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-20 23:00:48,109 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 23:00:48,124 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-20 23:00:48,695 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:00:48,731 INFO ]: Computing forward predicates... [2018-06-20 23:00:49,039 WARN ]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-20 23:00:50,916 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-20 23:00:50,943 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-20 23:00:50,943 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-20 23:00:50,943 INFO ]: Interpolant automaton has 6 states [2018-06-20 23:00:50,943 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-20 23:00:50,943 INFO ]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-06-20 23:00:50,944 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-20 23:00:51,211 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-20 23:00:51,211 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-20 23:00:51,211 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-20 23:00:51,211 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-20 23:00:51,211 INFO ]: Finished accepts. some prefix is accepted. [2018-06-20 23:00:51,212 INFO ]: With dead ends: 10 [2018-06-20 23:00:51,212 INFO ]: Without dead ends: 10 [2018-06-20 23:00:51,212 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-06-20 23:00:51,212 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-20 23:00:51,213 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-20 23:00:51,213 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-20 23:00:51,214 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-20 23:00:51,214 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-20 23:00:51,214 INFO ]: Finished accepts. word is rejected. [2018-06-20 23:00:51,214 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-20 23:00:51,214 INFO ]: Interpolant automaton has 6 states. [2018-06-20 23:00:51,214 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-20 23:00:51,214 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-20 23:00:51,214 INFO ]: Found error trace [2018-06-20 23:00:51,214 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-20 23:00:51,214 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-20 23:00:51,214 INFO ]: Analyzing trace with hash -2043975570, now seen corresponding path program 2 times [2018-06-20 23:00:51,214 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-20 23:00:51,214 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-20 23:00:51,215 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:00:51,215 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-20 23:00:51,215 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:00:51,759 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:00:53,102 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-20 23:00:53,102 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-20 23:00:53,125 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 23:00:53,131 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-20 23:00:53,921 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-20 23:00:53,921 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:00:53,980 INFO ]: Computing forward predicates... [2018-06-20 23:00:58,731 WARN ]: expecting exponential blowup for input size 6 [2018-06-20 23:00:59,128 WARN ]: Spent 222.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 20 [2018-06-20 23:00:59,134 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-20 23:00:59,161 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-20 23:00:59,161 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-20 23:00:59,161 INFO ]: Interpolant automaton has 8 states [2018-06-20 23:00:59,161 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-20 23:00:59,161 INFO ]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-06-20 23:00:59,161 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-06-20 23:00:59,556 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-20 23:00:59,556 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-20 23:00:59,556 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-20 23:00:59,556 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-20 23:00:59,556 INFO ]: Finished accepts. some prefix is accepted. [2018-06-20 23:00:59,557 INFO ]: With dead ends: 11 [2018-06-20 23:00:59,557 INFO ]: Without dead ends: 11 [2018-06-20 23:00:59,557 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-06-20 23:00:59,557 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-20 23:00:59,559 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-20 23:00:59,559 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-20 23:00:59,559 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-20 23:00:59,559 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-20 23:00:59,559 INFO ]: Finished accepts. word is rejected. [2018-06-20 23:00:59,559 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-20 23:00:59,559 INFO ]: Interpolant automaton has 8 states. [2018-06-20 23:00:59,559 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-20 23:00:59,560 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-20 23:00:59,560 INFO ]: Found error trace [2018-06-20 23:00:59,560 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-20 23:00:59,560 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-20 23:00:59,560 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 3 times [2018-06-20 23:00:59,560 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-20 23:00:59,560 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-20 23:00:59,561 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:00:59,561 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-20 23:00:59,561 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:01:00,381 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:01:01,853 WARN ]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-20 23:01:02,120 WARN ]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-20 23:01:02,121 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-20 23:01:02,121 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-20 23:01:02,121 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) [2018-06-20 23:01:02,138 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-20 23:01:03,085 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-20 23:01:03,086 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:01:03,164 INFO ]: Computing forward predicates... [2018-06-20 23:01:13,089 WARN ]: Simplifying disjunction of 5184 conjuctions. This might take some time... [2018-06-20 23:01:15,367 INFO ]: Simplified to disjunction of 5184 conjuctions. [2018-06-20 23:01:15,427 WARN ]: Simplifying disjunction of 7776 conjuctions. This might take some time... [2018-06-20 23:01:22,987 INFO ]: Simplified to disjunction of 7776 conjuctions. [2018-06-20 23:01:23,065 WARN ]: Simplifying disjunction of 7776 conjuctions. This might take some time... [2018-06-20 23:01:27,993 INFO ]: Simplified to disjunction of 7776 conjuctions. [2018-06-20 23:01:28,120 WARN ]: Simplifying disjunction of 15552 conjuctions. This might take some time... Received shutdown request... [2018-06-20 23:01:43,906 INFO ]: Timeout while computing interpolants [2018-06-20 23:01:44,106 WARN ]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-20 23:01:44,106 WARN ]: Verification canceled [2018-06-20 23:01:44,111 WARN ]: Timeout [2018-06-20 23:01:44,111 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.06 11:01:44 BoogieIcfgContainer [2018-06-20 23:01:44,111 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-20 23:01:44,112 INFO ]: Toolchain (without parser) took 61204.03 ms. Allocated memory was 351.8 MB in the beginning and 2.5 GB in the end (delta: 2.2 GB). Free memory was 284.9 MB in the beginning and 2.0 GB in the end (delta: -1.7 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-06-20 23:01:44,113 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2018-06-20 23:01:44,113 INFO ]: ChcToBoogie took 116.95 ms. Allocated memory is still 351.8 MB. Free memory was 284.9 MB in the beginning and 276.3 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 7.1 GB. [2018-06-20 23:01:44,113 INFO ]: Boogie Preprocessor took 163.50 ms. Allocated memory is still 351.8 MB. Free memory was 276.3 MB in the beginning and 264.7 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2018-06-20 23:01:44,114 INFO ]: RCFGBuilder took 2662.49 ms. Allocated memory was 351.8 MB in the beginning and 471.3 MB in the end (delta: 119.5 MB). Free memory was 264.7 MB in the beginning and 174.7 MB in the end (delta: 90.0 MB). Peak memory consumption was 209.5 MB. Max. memory is 7.1 GB. [2018-06-20 23:01:44,114 INFO ]: TraceAbstraction took 58251.83 ms. Allocated memory was 471.3 MB in the beginning and 2.5 GB in the end (delta: 2.0 GB). Free memory was 174.7 MB in the beginning and 2.0 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-06-20 23:01:44,116 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 308.8 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * ChcToBoogie took 116.95 ms. Allocated memory is still 351.8 MB. Free memory was 284.9 MB in the beginning and 276.3 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 163.50 ms. Allocated memory is still 351.8 MB. Free memory was 276.3 MB in the beginning and 264.7 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2662.49 ms. Allocated memory was 351.8 MB in the beginning and 471.3 MB in the end (delta: 119.5 MB). Free memory was 264.7 MB in the beginning and 174.7 MB in the end (delta: 90.0 MB). Peak memory consumption was 209.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 58251.83 ms. Allocated memory was 471.3 MB in the beginning and 2.5 GB in the end (delta: 2.0 GB). Free memory was 174.7 MB in the beginning and 2.0 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.0 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 11 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 15552 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 58.1s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 2 SDslu, 47 SDs, 0 SdLazy, 20 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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: 0.5s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 9.7s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 1141 SizeOfPredicates, 8 NumberOfNonLiveVariables, 5341 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/8 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-0124.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-20_23-01-44-127.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/chc-lra-0124.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-20_23-01-44-127.csv Completed graceful shutdown