java -Xss4m -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/eldarica-misc/LIA/Consistency/incremental2.41.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 08:31:30,597 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 08:31:30,599 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 08:31:30,610 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 08:31:30,610 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 08:31:30,611 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 08:31:30,615 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 08:31:30,618 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 08:31:30,619 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 08:31:30,621 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 08:31:30,622 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 08:31:30,622 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 08:31:30,623 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 08:31:30,624 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 08:31:30,628 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 08:31:30,629 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 08:31:30,631 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 08:31:30,644 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 08:31:30,645 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 08:31:30,646 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 08:31:30,647 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 08:31:30,649 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 08:31:30,649 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 08:31:30,650 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 08:31:30,650 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 08:31:30,651 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 08:31:30,656 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 08:31:30,657 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 08:31:30,658 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 08:31:30,658 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 08:31:30,658 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 08:31:30,666 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 08:31:30,666 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 08:31:30,667 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 08:31:30,668 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 08:31:30,668 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 08:31:30,691 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 08:31:30,691 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 08:31:30,691 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 08:31:30,691 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 08:31:30,692 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 08:31:30,693 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 08:31:30,696 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 08:31:30,696 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 08:31:30,696 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 08:31:30,696 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 08:31:30,697 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 08:31:30,697 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 08:31:30,697 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 08:31:30,697 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 08:31:30,697 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 08:31:30,697 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 08:31:30,698 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 08:31:30,698 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 08:31:30,698 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 08:31:30,699 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 08:31:30,699 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 08:31:30,700 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 08:31:30,700 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 08:31:30,747 INFO ]: Repository-Root is: /tmp [2018-06-25 08:31:30,763 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 08:31:30,768 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 08:31:30,769 INFO ]: Initializing SmtParser... [2018-06-25 08:31:30,770 INFO ]: SmtParser initialized [2018-06-25 08:31:30,770 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental2.41.smt2 [2018-06-25 08:31:30,772 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 [2018-06-25 08:31:30,856 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental2.41.smt2 unknown [2018-06-25 08:31:31,594 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental2.41.smt2 [2018-06-25 08:31:31,601 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 08:31:31,608 INFO ]: Walking toolchain with 4 elements. [2018-06-25 08:31:31,608 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 08:31:31,608 INFO ]: Initializing ChcToBoogie... [2018-06-25 08:31:31,608 INFO ]: ChcToBoogie initialized [2018-06-25 08:31:31,612 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 08:31:31" (1/1) ... [2018-06-25 08:31:31,787 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:31:31 Unit [2018-06-25 08:31:31,787 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 08:31:31,788 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 08:31:31,788 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 08:31:31,788 INFO ]: Boogie Preprocessor initialized [2018-06-25 08:31:31,812 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:31:31" (1/1) ... [2018-06-25 08:31:31,812 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:31:31" (1/1) ... [2018-06-25 08:31:31,831 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:31:31" (1/1) ... [2018-06-25 08:31:31,832 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:31:31" (1/1) ... [2018-06-25 08:31:31,856 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:31:31" (1/1) ... [2018-06-25 08:31:31,861 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:31:31" (1/1) ... [2018-06-25 08:31:31,868 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:31:31" (1/1) ... [2018-06-25 08:31:31,877 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 08:31:31,878 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 08:31:31,878 INFO ]: Initializing RCFGBuilder... [2018-06-25 08:31:31,878 INFO ]: RCFGBuilder initialized [2018-06-25 08:31:31,879 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:31:31" (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) [2018-06-25 08:31:31,888 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 08:31:31,888 INFO ]: Found specification of procedure gotoProc [2018-06-25 08:31:31,888 INFO ]: Found implementation of procedure gotoProc [2018-06-25 08:31:31,888 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 08:31:31,888 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 08:31:31,889 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 [2018-06-25 08:31:34,477 INFO ]: Using library mode [2018-06-25 08:31:34,478 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 08:31:34 BoogieIcfgContainer [2018-06-25 08:31:34,478 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 08:31:34,479 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 08:31:34,479 INFO ]: Initializing TraceAbstraction... [2018-06-25 08:31:34,482 INFO ]: TraceAbstraction initialized [2018-06-25 08:31:34,483 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 08:31:31" (1/3) ... [2018-06-25 08:31:34,483 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc6afdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 08:31:34, skipping insertion in model container [2018-06-25 08:31:34,483 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:31:31" (2/3) ... [2018-06-25 08:31:34,484 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc6afdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 08:31:34, skipping insertion in model container [2018-06-25 08:31:34,484 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 08:31:34" (3/3) ... [2018-06-25 08:31:34,485 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 08:31:34,494 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 08:31:34,504 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 08:31:34,554 INFO ]: Using default assertion order modulation [2018-06-25 08:31:34,555 INFO ]: Interprodecural is true [2018-06-25 08:31:34,555 INFO ]: Hoare is false [2018-06-25 08:31:34,555 INFO ]: Compute interpolants for FPandBP [2018-06-25 08:31:34,555 INFO ]: Backedges is TWOTRACK [2018-06-25 08:31:34,555 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 08:31:34,555 INFO ]: Difference is false [2018-06-25 08:31:34,555 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 08:31:34,555 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 08:31:34,582 INFO ]: Start isEmpty. Operand 146 states. [2018-06-25 08:31:34,608 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 08:31:34,608 INFO ]: Found error trace [2018-06-25 08:31:34,613 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:31:34,614 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:31:34,619 INFO ]: Analyzing trace with hash 1497736023, now seen corresponding path program 1 times [2018-06-25 08:31:34,621 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:31:34,621 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:31:34,653 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:31:34,653 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:31:34,653 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:31:34,700 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:31:35,030 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:31:35,032 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:31:35,032 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 08:31:35,034 INFO ]: Interpolant automaton has 4 states [2018-06-25 08:31:35,046 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 08:31:35,046 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 08:31:35,048 INFO ]: Start difference. First operand 146 states. Second operand 4 states. [2018-06-25 08:31:37,585 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:31:37,585 INFO ]: Finished difference Result 285 states and 555 transitions. [2018-06-25 08:31:37,585 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 08:31:37,586 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-25 08:31:37,586 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:31:37,628 INFO ]: With dead ends: 285 [2018-06-25 08:31:37,628 INFO ]: Without dead ends: 275 [2018-06-25 08:31:37,630 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 [2018-06-25 08:31:37,648 INFO ]: Start minimizeSevpa. Operand 275 states. [2018-06-25 08:31:37,766 INFO ]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-06-25 08:31:37,767 INFO ]: Start removeUnreachable. Operand 275 states. [2018-06-25 08:31:37,789 INFO ]: Finished removeUnreachable. Reduced from 275 states to 275 states and 537 transitions. [2018-06-25 08:31:37,790 INFO ]: Start accepts. Automaton has 275 states and 537 transitions. Word has length 8 [2018-06-25 08:31:37,791 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:31:37,791 INFO ]: Abstraction has 275 states and 537 transitions. [2018-06-25 08:31:37,791 INFO ]: Interpolant automaton has 4 states. [2018-06-25 08:31:37,791 INFO ]: Start isEmpty. Operand 275 states and 537 transitions. [2018-06-25 08:31:37,795 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 08:31:37,795 INFO ]: Found error trace [2018-06-25 08:31:37,795 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:31:37,795 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:31:37,795 INFO ]: Analyzing trace with hash 1361293243, now seen corresponding path program 1 times [2018-06-25 08:31:37,795 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:31:37,795 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:31:37,796 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:31:37,796 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:31:37,796 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:31:37,804 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:31:38,016 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:31:38,016 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:31:38,016 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 08:31:38,018 INFO ]: Interpolant automaton has 4 states [2018-06-25 08:31:38,018 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 08:31:38,018 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 08:31:38,018 INFO ]: Start difference. First operand 275 states and 537 transitions. Second operand 4 states. [2018-06-25 08:31:40,108 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:31:40,108 INFO ]: Finished difference Result 411 states and 804 transitions. [2018-06-25 08:31:40,133 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 08:31:40,133 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-25 08:31:40,133 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:31:40,155 INFO ]: With dead ends: 411 [2018-06-25 08:31:40,155 INFO ]: Without dead ends: 411 [2018-06-25 08:31:40,156 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 [2018-06-25 08:31:40,157 INFO ]: Start minimizeSevpa. Operand 411 states. [2018-06-25 08:31:40,256 INFO ]: Finished minimizeSevpa. Reduced states from 411 to 411. [2018-06-25 08:31:40,256 INFO ]: Start removeUnreachable. Operand 411 states. [2018-06-25 08:31:40,273 INFO ]: Finished removeUnreachable. Reduced from 411 states to 411 states and 804 transitions. [2018-06-25 08:31:40,273 INFO ]: Start accepts. Automaton has 411 states and 804 transitions. Word has length 8 [2018-06-25 08:31:40,273 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:31:40,273 INFO ]: Abstraction has 411 states and 804 transitions. [2018-06-25 08:31:40,273 INFO ]: Interpolant automaton has 4 states. [2018-06-25 08:31:40,274 INFO ]: Start isEmpty. Operand 411 states and 804 transitions. [2018-06-25 08:31:40,306 INFO ]: Finished isEmpty. Found accepting run of length 19 [2018-06-25 08:31:40,306 INFO ]: Found error trace [2018-06-25 08:31:40,306 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:31:40,306 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:31:40,306 INFO ]: Analyzing trace with hash 1583434742, now seen corresponding path program 1 times [2018-06-25 08:31:40,306 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:31:40,307 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:31:40,307 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:31:40,307 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:31:40,307 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:31:40,397 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:31:41,045 INFO ]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:31:41,045 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:31:41,045 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-25 08:31:41,045 INFO ]: Interpolant automaton has 7 states [2018-06-25 08:31:41,045 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-25 08:31:41,045 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-25 08:31:41,046 INFO ]: Start difference. First operand 411 states and 804 transitions. Second operand 7 states. [2018-06-25 08:31:51,911 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:31:51,911 INFO ]: Finished difference Result 1827 states and 11018 transitions. [2018-06-25 08:31:51,912 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-06-25 08:31:51,912 INFO ]: Start accepts. Automaton has 7 states. Word has length 18 [2018-06-25 08:31:51,912 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:31:52,663 INFO ]: With dead ends: 1827 [2018-06-25 08:31:52,663 INFO ]: Without dead ends: 1827 [2018-06-25 08:31:52,663 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2018-06-25 08:31:52,664 INFO ]: Start minimizeSevpa. Operand 1827 states. [2018-06-25 08:31:53,721 INFO ]: Finished minimizeSevpa. Reduced states from 1827 to 1086. [2018-06-25 08:31:53,721 INFO ]: Start removeUnreachable. Operand 1086 states. [2018-06-25 08:31:53,793 INFO ]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 2804 transitions. [2018-06-25 08:31:53,794 INFO ]: Start accepts. Automaton has 1086 states and 2804 transitions. Word has length 18 [2018-06-25 08:31:53,794 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:31:53,794 INFO ]: Abstraction has 1086 states and 2804 transitions. [2018-06-25 08:31:53,794 INFO ]: Interpolant automaton has 7 states. [2018-06-25 08:31:53,794 INFO ]: Start isEmpty. Operand 1086 states and 2804 transitions. [2018-06-25 08:31:53,839 INFO ]: Finished isEmpty. Found accepting run of length 19 [2018-06-25 08:31:53,840 INFO ]: Found error trace [2018-06-25 08:31:53,840 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:31:53,840 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:31:53,841 INFO ]: Analyzing trace with hash 714615161, now seen corresponding path program 1 times [2018-06-25 08:31:53,841 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:31:53,841 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:31:53,841 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:31:53,841 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:31:53,841 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:31:53,921 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:31:54,638 INFO ]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:31:54,638 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:31:54,638 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-25 08:31:54,638 INFO ]: Interpolant automaton has 7 states [2018-06-25 08:31:54,638 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-25 08:31:54,638 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-25 08:31:54,639 INFO ]: Start difference. First operand 1086 states and 2804 transitions. Second operand 7 states. [2018-06-25 08:31:54,930 WARN ]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-25 08:32:09,763 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:32:09,763 INFO ]: Finished difference Result 3831 states and 37542 transitions. [2018-06-25 08:32:09,763 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-06-25 08:32:09,763 INFO ]: Start accepts. Automaton has 7 states. Word has length 18 [2018-06-25 08:32:09,764 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:32:12,346 INFO ]: With dead ends: 3831 [2018-06-25 08:32:12,346 INFO ]: Without dead ends: 3831 [2018-06-25 08:32:12,346 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2018-06-25 08:32:12,348 INFO ]: Start minimizeSevpa. Operand 3831 states. [2018-06-25 08:32:17,415 INFO ]: Finished minimizeSevpa. Reduced states from 3831 to 2520. [2018-06-25 08:32:17,415 INFO ]: Start removeUnreachable. Operand 2520 states. [2018-06-25 08:32:17,628 INFO ]: Finished removeUnreachable. Reduced from 2520 states to 2520 states and 9098 transitions. [2018-06-25 08:32:17,628 INFO ]: Start accepts. Automaton has 2520 states and 9098 transitions. Word has length 18 [2018-06-25 08:32:17,628 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:32:17,628 INFO ]: Abstraction has 2520 states and 9098 transitions. [2018-06-25 08:32:17,628 INFO ]: Interpolant automaton has 7 states. [2018-06-25 08:32:17,628 INFO ]: Start isEmpty. Operand 2520 states and 9098 transitions. [2018-06-25 08:32:17,672 INFO ]: Finished isEmpty. Found accepting run of length 19 [2018-06-25 08:32:17,672 INFO ]: Found error trace [2018-06-25 08:32:17,673 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:32:17,673 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:32:17,674 INFO ]: Analyzing trace with hash 649971033, now seen corresponding path program 1 times [2018-06-25 08:32:17,674 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:32:17,674 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:32:17,675 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:32:17,675 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:32:17,675 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:32:17,727 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:32:18,187 INFO ]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:32:18,187 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:32:18,187 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-25 08:32:18,187 INFO ]: Interpolant automaton has 7 states [2018-06-25 08:32:18,187 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-25 08:32:18,187 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-25 08:32:18,187 INFO ]: Start difference. First operand 2520 states and 9098 transitions. Second operand 7 states. Received shutdown request... [2018-06-25 08:32:32,468 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-06-25 08:32:32,468 WARN ]: Verification canceled [2018-06-25 08:32:32,472 WARN ]: Timeout [2018-06-25 08:32:32,472 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 08:32:32 BoogieIcfgContainer [2018-06-25 08:32:32,472 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 08:32:32,473 INFO ]: Toolchain (without parser) took 60871.70 ms. Allocated memory was 303.6 MB in the beginning and 1.9 GB in the end (delta: 1.6 GB). Free memory was 210.1 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 339.3 MB. Max. memory is 3.6 GB. [2018-06-25 08:32:32,475 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 303.6 MB. Free memory is still 268.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 08:32:32,475 INFO ]: ChcToBoogie took 179.53 ms. Allocated memory is still 303.6 MB. Free memory was 210.1 MB in the beginning and 204.1 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. [2018-06-25 08:32:32,475 INFO ]: Boogie Preprocessor took 88.97 ms. Allocated memory is still 303.6 MB. Free memory was 204.1 MB in the beginning and 200.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-25 08:32:32,476 INFO ]: RCFGBuilder took 2600.44 ms. Allocated memory was 303.6 MB in the beginning and 354.9 MB in the end (delta: 51.4 MB). Free memory was 200.1 MB in the beginning and 312.7 MB in the end (delta: -112.5 MB). Peak memory consumption was 50.1 MB. Max. memory is 3.6 GB. [2018-06-25 08:32:32,476 INFO ]: TraceAbstraction took 57993.04 ms. Allocated memory was 354.9 MB in the beginning and 1.9 GB in the end (delta: 1.6 GB). Free memory was 312.7 MB in the beginning and 1.5 GB in the end (delta: -1.2 GB). Peak memory consumption was 390.5 MB. Max. memory is 3.6 GB. [2018-06-25 08:32:32,480 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 303.6 MB. Free memory is still 268.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 179.53 ms. Allocated memory is still 303.6 MB. Free memory was 210.1 MB in the beginning and 204.1 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 88.97 ms. Allocated memory is still 303.6 MB. Free memory was 204.1 MB in the beginning and 200.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 2600.44 ms. Allocated memory was 303.6 MB in the beginning and 354.9 MB in the end (delta: 51.4 MB). Free memory was 200.1 MB in the beginning and 312.7 MB in the end (delta: -112.5 MB). Peak memory consumption was 50.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 57993.04 ms. Allocated memory was 354.9 MB in the beginning and 1.9 GB in the end (delta: 1.6 GB). Free memory was 312.7 MB in the beginning and 1.5 GB in the end (delta: -1.2 GB). Peak memory consumption was 390.5 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was constructing difference of abstraction (2520states) and interpolant automaton (currently 19 states, 7 states before enhancement), while ReachableStatesComputation was computing reachable states (5758 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 146 locations, 1 error locations. TIMEOUT Result, 57.9s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 48.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4221 SDtfs, 1182 SDslu, 8483 SDs, 0 SdLazy, 21812 SolverSat, 5034 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 33.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2520occurred in iteration=4, 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: 6.6s AutomataMinimizationTime, 4 MinimizatonAttempts, 2052 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 2261 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 12/12 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/incremental2.41.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_08-32-32-502.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/incremental2.41.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_08-32-32-502.csv Completed graceful shutdown