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/sigma_sum.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:51:37,535 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:51:37,537 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:51:37,550 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:51:37,550 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:51:37,554 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:51:37,555 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:51:37,557 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:51:37,559 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:51:37,560 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:51:37,561 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:51:37,561 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:51:37,562 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:51:37,563 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:51:37,564 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:51:37,565 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:51:37,566 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:51:37,568 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:51:37,570 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:51:37,572 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:51:37,573 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:51:37,575 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 01:51:37,576 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 01:51:37,576 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 01:51:37,577 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 01:51:37,578 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 01:51:37,582 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 01:51:37,583 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 01:51:37,584 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 01:51:37,585 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:51:37,585 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:51:37,590 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:51:37,590 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:51:37,592 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:51:37,593 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:51:37,594 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:51:37,612 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:51:37,612 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:51:37,616 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:51:37,616 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:51:37,617 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:51:37,617 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:51:37,617 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:51:37,618 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:51:37,618 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:51:37,618 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:51:37,618 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:51:37,618 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:51:37,619 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:51:37,622 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:51:37,622 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:51:37,622 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:51:37,622 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:51:37,624 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:51:37,624 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:51:37,679 INFO ]: Repository-Root is: /tmp [2018-06-22 01:51:37,695 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:51:37,699 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:51:37,701 INFO ]: Initializing SmtParser... [2018-06-22 01:51:37,701 INFO ]: SmtParser initialized [2018-06-22 01:51:37,702 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/sigma_sum.smt2 [2018-06-22 01:51:37,703 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 01:51:37,800 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/sigma_sum.smt2 unknown [2018-06-22 01:51:37,967 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/sigma_sum.smt2 [2018-06-22 01:51:37,977 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:51:37,987 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:51:37,987 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:51:37,987 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:51:37,987 INFO ]: ChcToBoogie initialized [2018-06-22 01:51:37,991 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:51:37" (1/1) ... [2018-06-22 01:51:38,043 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:38 Unit [2018-06-22 01:51:38,043 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:51:38,044 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:51:38,044 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:51:38,044 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:51:38,062 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:38" (1/1) ... [2018-06-22 01:51:38,063 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:38" (1/1) ... [2018-06-22 01:51:38,068 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:38" (1/1) ... [2018-06-22 01:51:38,068 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:38" (1/1) ... [2018-06-22 01:51:38,071 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:38" (1/1) ... [2018-06-22 01:51:38,075 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:38" (1/1) ... [2018-06-22 01:51:38,076 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:38" (1/1) ... [2018-06-22 01:51:38,077 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:51:38,078 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:51:38,078 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:51:38,078 INFO ]: RCFGBuilder initialized [2018-06-22 01:51:38,078 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:38" (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 01:51:38,094 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:51:38,094 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:51:38,095 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:51:38,095 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:51:38,095 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:51:38,095 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 01:51:38,472 INFO ]: Using library mode [2018-06-22 01:51:38,473 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:51:38 BoogieIcfgContainer [2018-06-22 01:51:38,473 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:51:38,482 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:51:38,482 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:51:38,487 INFO ]: TraceAbstraction initialized [2018-06-22 01:51:38,487 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:51:37" (1/3) ... [2018-06-22 01:51:38,488 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8c6031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:51:38, skipping insertion in model container [2018-06-22 01:51:38,488 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:38" (2/3) ... [2018-06-22 01:51:38,488 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8c6031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:51:38, skipping insertion in model container [2018-06-22 01:51:38,489 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:51:38" (3/3) ... [2018-06-22 01:51:38,490 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:51:38,502 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:51:38,514 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:51:38,555 INFO ]: Using default assertion order modulation [2018-06-22 01:51:38,556 INFO ]: Interprodecural is true [2018-06-22 01:51:38,556 INFO ]: Hoare is false [2018-06-22 01:51:38,556 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:51:38,556 INFO ]: Backedges is TWOTRACK [2018-06-22 01:51:38,556 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:51:38,556 INFO ]: Difference is false [2018-06-22 01:51:38,556 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:51:38,556 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:51:38,571 INFO ]: Start isEmpty. Operand 15 states. [2018-06-22 01:51:38,585 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 01:51:38,585 INFO ]: Found error trace [2018-06-22 01:51:38,586 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:51:38,587 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:51:38,593 INFO ]: Analyzing trace with hash -233944405, now seen corresponding path program 1 times [2018-06-22 01:51:38,596 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:51:38,596 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:51:38,649 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:38,649 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:51:38,649 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:38,689 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:51:38,756 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:51:38,764 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:51:38,764 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 01:51:38,766 INFO ]: Interpolant automaton has 2 states [2018-06-22 01:51:38,783 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 01:51:38,783 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 01:51:38,787 INFO ]: Start difference. First operand 15 states. Second operand 2 states. [2018-06-22 01:51:38,814 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:51:38,814 INFO ]: Finished difference Result 13 states and 16 transitions. [2018-06-22 01:51:38,815 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 01:51:38,828 INFO ]: Start accepts. Automaton has 2 states. Word has length 7 [2018-06-22 01:51:38,828 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:51:38,849 INFO ]: With dead ends: 13 [2018-06-22 01:51:38,849 INFO ]: Without dead ends: 13 [2018-06-22 01:51:38,853 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 01:51:38,876 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 01:51:38,915 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 01:51:38,916 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 01:51:38,917 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2018-06-22 01:51:38,918 INFO ]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 7 [2018-06-22 01:51:38,918 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:51:38,918 INFO ]: Abstraction has 13 states and 16 transitions. [2018-06-22 01:51:38,918 INFO ]: Interpolant automaton has 2 states. [2018-06-22 01:51:38,918 INFO ]: Start isEmpty. Operand 13 states and 16 transitions. [2018-06-22 01:51:38,919 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:51:38,919 INFO ]: Found error trace [2018-06-22 01:51:38,919 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:51:38,920 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:51:38,920 INFO ]: Analyzing trace with hash 1297909387, now seen corresponding path program 1 times [2018-06-22 01:51:38,920 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:51:38,920 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:51:38,921 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:38,921 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:51:38,921 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:38,928 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:51:39,033 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:51:39,033 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:51:39,033 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:51:39,035 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:51:39,035 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:51:39,035 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:51:39,035 INFO ]: Start difference. First operand 13 states and 16 transitions. Second operand 4 states. [2018-06-22 01:51:39,175 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:51:39,175 INFO ]: Finished difference Result 21 states and 26 transitions. [2018-06-22 01:51:39,175 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:51:39,175 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 01:51:39,175 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:51:39,176 INFO ]: With dead ends: 21 [2018-06-22 01:51:39,176 INFO ]: Without dead ends: 21 [2018-06-22 01:51:39,177 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 01:51:39,177 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 01:51:39,180 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 01:51:39,180 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 01:51:39,181 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2018-06-22 01:51:39,181 INFO ]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 8 [2018-06-22 01:51:39,182 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:51:39,182 INFO ]: Abstraction has 21 states and 26 transitions. [2018-06-22 01:51:39,182 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:51:39,182 INFO ]: Start isEmpty. Operand 21 states and 26 transitions. [2018-06-22 01:51:39,183 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:51:39,183 INFO ]: Found error trace [2018-06-22 01:51:39,183 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:51:39,183 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:51:39,183 INFO ]: Analyzing trace with hash 1340063652, now seen corresponding path program 1 times [2018-06-22 01:51:39,183 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:51:39,183 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:51:39,184 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:39,184 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:51:39,184 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:39,192 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:51:39,243 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:51:39,243 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:51:39,243 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 01:51:39,244 INFO ]: Interpolant automaton has 3 states [2018-06-22 01:51:39,244 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 01:51:39,244 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:51:39,244 INFO ]: Start difference. First operand 21 states and 26 transitions. Second operand 3 states. [2018-06-22 01:51:39,264 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:51:39,264 INFO ]: Finished difference Result 23 states and 28 transitions. [2018-06-22 01:51:39,264 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:51:39,265 INFO ]: Start accepts. Automaton has 3 states. Word has length 8 [2018-06-22 01:51:39,265 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:51:39,265 INFO ]: With dead ends: 23 [2018-06-22 01:51:39,265 INFO ]: Without dead ends: 23 [2018-06-22 01:51:39,266 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 01:51:39,266 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 01:51:39,269 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-22 01:51:39,269 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 01:51:39,270 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2018-06-22 01:51:39,270 INFO ]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 8 [2018-06-22 01:51:39,271 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:51:39,271 INFO ]: Abstraction has 23 states and 28 transitions. [2018-06-22 01:51:39,271 INFO ]: Interpolant automaton has 3 states. [2018-06-22 01:51:39,271 INFO ]: Start isEmpty. Operand 23 states and 28 transitions. [2018-06-22 01:51:39,271 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 01:51:39,271 INFO ]: Found error trace [2018-06-22 01:51:39,272 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:51:39,272 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:51:39,272 INFO ]: Analyzing trace with hash -2093216820, now seen corresponding path program 1 times [2018-06-22 01:51:39,272 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:51:39,272 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:51:39,273 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:39,273 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:51:39,273 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:39,288 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:51:39,417 INFO ]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 01:51:39,417 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:51:39,417 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-22 01:51:39,418 INFO ]: Interpolant automaton has 6 states [2018-06-22 01:51:39,418 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 01:51:39,418 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 01:51:39,418 INFO ]: Start difference. First operand 23 states and 28 transitions. Second operand 6 states. [2018-06-22 01:51:39,828 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:51:39,828 INFO ]: Finished difference Result 30 states and 37 transitions. [2018-06-22 01:51:39,828 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 01:51:39,828 INFO ]: Start accepts. Automaton has 6 states. Word has length 17 [2018-06-22 01:51:39,828 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:51:39,831 INFO ]: With dead ends: 30 [2018-06-22 01:51:39,831 INFO ]: Without dead ends: 26 [2018-06-22 01:51:39,831 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-06-22 01:51:39,831 INFO ]: Start minimizeSevpa. Operand 26 states. [2018-06-22 01:51:39,837 INFO ]: Finished minimizeSevpa. Reduced states from 26 to 24. [2018-06-22 01:51:39,837 INFO ]: Start removeUnreachable. Operand 24 states. [2018-06-22 01:51:39,838 INFO ]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-06-22 01:51:39,838 INFO ]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 17 [2018-06-22 01:51:39,838 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:51:39,838 INFO ]: Abstraction has 24 states and 28 transitions. [2018-06-22 01:51:39,838 INFO ]: Interpolant automaton has 6 states. [2018-06-22 01:51:39,838 INFO ]: Start isEmpty. Operand 24 states and 28 transitions. [2018-06-22 01:51:39,839 INFO ]: Finished isEmpty. Found accepting run of length 19 [2018-06-22 01:51:39,839 INFO ]: Found error trace [2018-06-22 01:51:39,839 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:51:39,839 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:51:39,839 INFO ]: Analyzing trace with hash 808674701, now seen corresponding path program 1 times [2018-06-22 01:51:39,839 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:51:39,839 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:51:39,842 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:39,842 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:51:39,842 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:39,860 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:51:40,225 INFO ]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 01:51:40,225 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:51:40,225 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:51:40,232 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:51:40,258 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:51:40,264 INFO ]: Computing forward predicates... [2018-06-22 01:51:40,416 INFO ]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 01:51:40,453 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:51:40,453 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2018-06-22 01:51:40,454 INFO ]: Interpolant automaton has 13 states [2018-06-22 01:51:40,454 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 01:51:40,454 INFO ]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2018-06-22 01:51:40,454 INFO ]: Start difference. First operand 24 states and 28 transitions. Second operand 13 states. [2018-06-22 01:51:41,227 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:51:41,228 INFO ]: Finished difference Result 24 states and 29 transitions. [2018-06-22 01:51:41,228 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-06-22 01:51:41,228 INFO ]: Start accepts. Automaton has 13 states. Word has length 18 [2018-06-22 01:51:41,228 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:51:41,228 INFO ]: With dead ends: 24 [2018-06-22 01:51:41,228 INFO ]: Without dead ends: 0 [2018-06-22 01:51:41,229 INFO ]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2018-06-22 01:51:41,229 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:51:41,229 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:51:41,229 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:51:41,229 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:51:41,229 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2018-06-22 01:51:41,229 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:51:41,229 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:51:41,229 INFO ]: Interpolant automaton has 13 states. [2018-06-22 01:51:41,229 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:51:41,229 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:51:41,232 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:51:41 BoogieIcfgContainer [2018-06-22 01:51:41,233 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:51:41,233 INFO ]: Toolchain (without parser) took 3255.99 ms. Allocated memory was 307.2 MB in the beginning and 325.6 MB in the end (delta: 18.4 MB). Free memory was 263.6 MB in the beginning and 248.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 33.1 MB. Max. memory is 3.6 GB. [2018-06-22 01:51:41,234 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 307.2 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:51:41,235 INFO ]: ChcToBoogie took 56.01 ms. Allocated memory is still 307.2 MB. Free memory was 263.6 MB in the beginning and 261.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:51:41,235 INFO ]: Boogie Preprocessor took 33.44 ms. Allocated memory is still 307.2 MB. Free memory was 261.6 MB in the beginning and 259.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:51:41,235 INFO ]: RCFGBuilder took 395.60 ms. Allocated memory is still 307.2 MB. Free memory was 259.6 MB in the beginning and 251.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:51:41,236 INFO ]: TraceAbstraction took 2750.21 ms. Allocated memory was 307.2 MB in the beginning and 325.6 MB in the end (delta: 18.4 MB). Free memory was 251.6 MB in the beginning and 248.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:51:41,242 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 307.2 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 56.01 ms. Allocated memory is still 307.2 MB. Free memory was 263.6 MB in the beginning and 261.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 33.44 ms. Allocated memory is still 307.2 MB. Free memory was 261.6 MB in the beginning and 259.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 395.60 ms. Allocated memory is still 307.2 MB. Free memory was 259.6 MB in the beginning and 251.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2750.21 ms. Allocated memory was 307.2 MB in the beginning and 325.6 MB in the end (delta: 18.4 MB). Free memory was 251.6 MB in the beginning and 248.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 21.0 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, 15 locations, 1 error locations. SAFE Result, 2.6s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 66 SDtfs, 61 SDslu, 86 SDs, 0 SdLazy, 160 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 2556 SizeOfPredicates, 7 NumberOfNonLiveVariables, 75 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 13/17 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/sigma_sum.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-51-41-253.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sigma_sum.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-51-41-253.csv Received shutdown request...