java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/hopv/lia/mochi/exc-fact.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:45:50,663 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:45:50,665 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:45:50,678 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:45:50,678 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:45:50,679 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:45:50,680 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:45:50,682 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:45:50,683 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:45:50,684 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:45:50,684 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:45:50,684 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:45:50,685 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:45:50,686 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:45:50,687 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:45:50,688 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:45:50,689 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:45:50,691 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:45:50,693 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:45:50,694 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:45:50,695 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:45:50,697 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-06-22 01:45:50,702 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:45:50,703 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:45:50,704 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:45:50,704 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:45:50,705 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:45:50,705 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:45:50,706 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:45:50,827 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:45:50,827 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:45:50,828 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:45:50,828 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:45:50,829 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:45:50,829 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:45:50,829 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:45:50,829 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:45:50,830 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:45:50,830 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:45:50,830 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:45:50,830 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:45:50,830 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:45:50,830 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:45:50,831 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:45:50,831 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:45:50,831 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:45:50,834 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:45:50,834 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:45:50,878 INFO ]: Repository-Root is: /tmp [2018-06-22 01:45:50,893 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:45:50,898 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:45:50,899 INFO ]: Initializing SmtParser... [2018-06-22 01:45:50,900 INFO ]: SmtParser initialized [2018-06-22 01:45:50,900 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/exc-fact.smt2 [2018-06-22 01:45:50,901 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 01:45:50,990 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/exc-fact.smt2 unknown [2018-06-22 01:45:51,219 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/exc-fact.smt2 [2018-06-22 01:45:51,223 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:45:51,227 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:45:51,228 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:45:51,228 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:45:51,228 INFO ]: ChcToBoogie initialized [2018-06-22 01:45:51,235 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:45:51" (1/1) ... [2018-06-22 01:45:51,297 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:45:51 Unit [2018-06-22 01:45:51,297 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:45:51,297 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:45:51,297 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:45:51,298 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:45:51,319 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:45:51" (1/1) ... [2018-06-22 01:45:51,319 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:45:51" (1/1) ... [2018-06-22 01:45:51,324 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:45:51" (1/1) ... [2018-06-22 01:45:51,324 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:45:51" (1/1) ... [2018-06-22 01:45:51,327 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:45:51" (1/1) ... [2018-06-22 01:45:51,329 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:45:51" (1/1) ... [2018-06-22 01:45:51,330 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:45:51" (1/1) ... [2018-06-22 01:45:51,332 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:45:51,333 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:45:51,333 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:45:51,333 INFO ]: RCFGBuilder initialized [2018-06-22 01:45:51,334 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:45:51" (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 [2018-06-22 01:45:51,353 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:45:51,353 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:45:51,353 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:45:51,353 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:45:51,353 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:45:51,353 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 01:45:51,567 INFO ]: Using library mode [2018-06-22 01:45:51,567 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:45:51 BoogieIcfgContainer [2018-06-22 01:45:51,567 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:45:51,569 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:45:51,569 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:45:51,581 INFO ]: TraceAbstraction initialized [2018-06-22 01:45:51,581 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:45:51" (1/3) ... [2018-06-22 01:45:51,582 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3a0050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:45:51, skipping insertion in model container [2018-06-22 01:45:51,582 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:45:51" (2/3) ... [2018-06-22 01:45:51,582 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3a0050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:45:51, skipping insertion in model container [2018-06-22 01:45:51,582 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:45:51" (3/3) ... [2018-06-22 01:45:51,584 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:45:51,602 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:45:51,626 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:45:51,667 INFO ]: Using default assertion order modulation [2018-06-22 01:45:51,668 INFO ]: Interprodecural is true [2018-06-22 01:45:51,668 INFO ]: Hoare is false [2018-06-22 01:45:51,668 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:45:51,668 INFO ]: Backedges is TWOTRACK [2018-06-22 01:45:51,668 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:45:51,668 INFO ]: Difference is false [2018-06-22 01:45:51,668 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:45:51,668 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:45:51,680 INFO ]: Start isEmpty. Operand 16 states. [2018-06-22 01:45:51,689 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 01:45:51,689 INFO ]: Found error trace [2018-06-22 01:45:51,690 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:45:51,690 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:45:51,694 INFO ]: Analyzing trace with hash -661821164, now seen corresponding path program 1 times [2018-06-22 01:45:51,696 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:45:51,696 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:45:51,729 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:45:51,729 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:45:51,729 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:45:51,754 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:45:51,780 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:45:51,783 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:45:51,783 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 01:45:51,784 INFO ]: Interpolant automaton has 2 states [2018-06-22 01:45:51,795 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 01:45:51,796 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 01:45:51,797 INFO ]: Start difference. First operand 16 states. Second operand 2 states. [2018-06-22 01:45:51,817 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:45:51,817 INFO ]: Finished difference Result 14 states and 17 transitions. [2018-06-22 01:45:51,817 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 01:45:51,819 INFO ]: Start accepts. Automaton has 2 states. Word has length 7 [2018-06-22 01:45:51,819 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:45:51,830 INFO ]: With dead ends: 14 [2018-06-22 01:45:51,830 INFO ]: Without dead ends: 14 [2018-06-22 01:45:51,832 INFO ]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 01:45:51,850 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-22 01:45:51,866 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-22 01:45:51,867 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-22 01:45:51,868 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2018-06-22 01:45:51,869 INFO ]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 7 [2018-06-22 01:45:51,869 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:45:51,870 INFO ]: Abstraction has 14 states and 17 transitions. [2018-06-22 01:45:51,870 INFO ]: Interpolant automaton has 2 states. [2018-06-22 01:45:51,870 INFO ]: Start isEmpty. Operand 14 states and 17 transitions. [2018-06-22 01:45:51,871 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:45:51,871 INFO ]: Found error trace [2018-06-22 01:45:51,871 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:45:51,871 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:45:51,871 INFO ]: Analyzing trace with hash 915742004, now seen corresponding path program 1 times [2018-06-22 01:45:51,871 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:45:51,871 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:45:51,872 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:45:51,872 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:45:51,872 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:45:51,882 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:45:51,983 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:45:51,983 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:45:51,983 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:45:51,985 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:45:51,985 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:45:51,985 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:45:51,985 INFO ]: Start difference. First operand 14 states and 17 transitions. Second operand 4 states. [2018-06-22 01:45:52,121 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:45:52,121 INFO ]: Finished difference Result 25 states and 31 transitions. [2018-06-22 01:45:52,121 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:45:52,121 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 01:45:52,122 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:45:52,122 INFO ]: With dead ends: 25 [2018-06-22 01:45:52,122 INFO ]: Without dead ends: 25 [2018-06-22 01:45:52,123 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:45:52,123 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-22 01:45:52,128 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-06-22 01:45:52,128 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-22 01:45:52,129 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2018-06-22 01:45:52,129 INFO ]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 8 [2018-06-22 01:45:52,131 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:45:52,131 INFO ]: Abstraction has 25 states and 31 transitions. [2018-06-22 01:45:52,131 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:45:52,131 INFO ]: Start isEmpty. Operand 25 states and 31 transitions. [2018-06-22 01:45:52,132 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 01:45:52,132 INFO ]: Found error trace [2018-06-22 01:45:52,132 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:45:52,132 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:45:52,132 INFO ]: Analyzing trace with hash -276041813, now seen corresponding path program 1 times [2018-06-22 01:45:52,132 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:45:52,132 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:45:52,133 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:45:52,133 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:45:52,133 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:45:52,140 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:45:52,161 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:45:52,161 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:45:52,161 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 01:45:52,161 INFO ]: Interpolant automaton has 3 states [2018-06-22 01:45:52,162 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 01:45:52,162 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:45:52,162 INFO ]: Start difference. First operand 25 states and 31 transitions. Second operand 3 states. [2018-06-22 01:45:52,170 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:45:52,170 INFO ]: Finished difference Result 26 states and 30 transitions. [2018-06-22 01:45:52,171 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:45:52,171 INFO ]: Start accepts. Automaton has 3 states. Word has length 10 [2018-06-22 01:45:52,171 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:45:52,172 INFO ]: With dead ends: 26 [2018-06-22 01:45:52,172 INFO ]: Without dead ends: 24 [2018-06-22 01:45:52,172 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:45:52,172 INFO ]: Start minimizeSevpa. Operand 24 states. [2018-06-22 01:45:52,175 INFO ]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-06-22 01:45:52,175 INFO ]: Start removeUnreachable. Operand 24 states. [2018-06-22 01:45:52,176 INFO ]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-06-22 01:45:52,176 INFO ]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 10 [2018-06-22 01:45:52,176 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:45:52,176 INFO ]: Abstraction has 24 states and 28 transitions. [2018-06-22 01:45:52,176 INFO ]: Interpolant automaton has 3 states. [2018-06-22 01:45:52,176 INFO ]: Start isEmpty. Operand 24 states and 28 transitions. [2018-06-22 01:45:52,177 INFO ]: Finished isEmpty. Found accepting run of length 19 [2018-06-22 01:45:52,177 INFO ]: Found error trace [2018-06-22 01:45:52,178 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:45:52,178 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:45:52,178 INFO ]: Analyzing trace with hash -1613663216, now seen corresponding path program 1 times [2018-06-22 01:45:52,178 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:45:52,178 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:45:52,179 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:45:52,179 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:45:52,179 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:45:52,190 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:45:52,321 INFO ]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 01:45:52,321 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:45:52,321 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-22 01:45:52,321 INFO ]: Interpolant automaton has 5 states [2018-06-22 01:45:52,321 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 01:45:52,321 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:45:52,321 INFO ]: Start difference. First operand 24 states and 28 transitions. Second operand 5 states. [2018-06-22 01:45:52,480 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:45:52,480 INFO ]: Finished difference Result 18 states and 20 transitions. [2018-06-22 01:45:52,481 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 01:45:52,481 INFO ]: Start accepts. Automaton has 5 states. Word has length 18 [2018-06-22 01:45:52,481 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:45:52,481 INFO ]: With dead ends: 18 [2018-06-22 01:45:52,481 INFO ]: Without dead ends: 0 [2018-06-22 01:45:52,481 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-06-22 01:45:52,481 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:45:52,481 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:45:52,482 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:45:52,482 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:45:52,482 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2018-06-22 01:45:52,482 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:45:52,482 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:45:52,482 INFO ]: Interpolant automaton has 5 states. [2018-06-22 01:45:52,482 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:45:52,482 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:45:52,489 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:45:52 BoogieIcfgContainer [2018-06-22 01:45:52,489 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:45:52,489 INFO ]: Toolchain (without parser) took 1266.37 ms. Allocated memory is still 309.3 MB. Free memory was 263.9 MB in the beginning and 222.9 MB in the end (delta: 40.9 MB). Peak memory consumption was 40.9 MB. Max. memory is 3.6 GB. [2018-06-22 01:45:52,492 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 274.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:45:52,492 INFO ]: ChcToBoogie took 69.22 ms. Allocated memory is still 309.3 MB. Free memory was 263.9 MB in the beginning and 261.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:45:52,493 INFO ]: Boogie Preprocessor took 34.12 ms. Allocated memory is still 309.3 MB. Free memory was 261.9 MB in the beginning and 259.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:45:52,493 INFO ]: RCFGBuilder took 234.50 ms. Allocated memory is still 309.3 MB. Free memory was 259.9 MB in the beginning and 251.9 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:45:52,495 INFO ]: TraceAbstraction took 920.15 ms. Allocated memory is still 309.3 MB. Free memory was 251.9 MB in the beginning and 222.9 MB in the end (delta: 28.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 3.6 GB. [2018-06-22 01:45:52,497 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 274.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 69.22 ms. Allocated memory is still 309.3 MB. Free memory was 263.9 MB in the beginning and 261.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 34.12 ms. Allocated memory is still 309.3 MB. Free memory was 261.9 MB in the beginning and 259.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 234.50 ms. Allocated memory is still 309.3 MB. Free memory was 259.9 MB in the beginning and 251.9 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 920.15 ms. Allocated memory is still 309.3 MB. Free memory was 251.9 MB in the beginning and 222.9 MB in the end (delta: 28.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 63 SDtfs, 35 SDslu, 42 SDs, 0 SdLazy, 28 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 781 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 5/5 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/exc-fact.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-45-52-518.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/exc-fact.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-45-52-518.csv Received shutdown request...