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/sum_intro.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:52:04,622 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:52:04,625 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:52:04,637 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:52:04,637 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:52:04,638 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:52:04,639 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:52:04,641 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:52:04,643 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:52:04,644 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:52:04,645 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:52:04,645 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:52:04,646 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:52:04,647 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:52:04,648 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:52:04,649 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:52:04,651 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:52:04,653 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:52:04,655 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:52:04,656 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:52:04,658 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:52:04,661 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 01:52:04,661 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 01:52:04,661 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 01:52:04,663 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 01:52:04,664 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 01:52:04,665 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 01:52:04,666 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 01:52:04,667 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 01:52:04,668 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:52:04,668 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:52:04,669 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:52:04,670 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:52:04,671 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:52:04,671 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:52:04,672 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:52:04,686 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:52:04,686 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:52:04,687 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:52:04,687 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:52:04,688 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:52:04,689 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:52:04,689 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:52:04,689 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:52:04,689 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:52:04,690 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:52:04,690 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:52:04,690 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:52:04,690 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:52:04,691 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:52:04,691 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:52:04,691 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:52:04,691 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:52:04,693 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:52:04,693 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:52:04,746 INFO ]: Repository-Root is: /tmp [2018-06-22 01:52:04,766 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:52:04,774 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:52:04,776 INFO ]: Initializing SmtParser... [2018-06-22 01:52:04,776 INFO ]: SmtParser initialized [2018-06-22 01:52:04,777 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/sum_intro.smt2 [2018-06-22 01:52:04,779 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 01:52:04,936 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/sum_intro.smt2 unknown [2018-06-22 01:52:05,117 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/sum_intro.smt2 [2018-06-22 01:52:05,123 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:52:05,129 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:52:05,130 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:52:05,130 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:52:05,133 INFO ]: ChcToBoogie initialized [2018-06-22 01:52:05,137 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:52:05" (1/1) ... [2018-06-22 01:52:05,198 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:52:05 Unit [2018-06-22 01:52:05,198 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:52:05,199 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:52:05,199 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:52:05,199 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:52:05,223 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:52:05" (1/1) ... [2018-06-22 01:52:05,224 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:52:05" (1/1) ... [2018-06-22 01:52:05,229 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:52:05" (1/1) ... [2018-06-22 01:52:05,229 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:52:05" (1/1) ... [2018-06-22 01:52:05,232 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:52:05" (1/1) ... [2018-06-22 01:52:05,234 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:52:05" (1/1) ... [2018-06-22 01:52:05,235 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:52:05" (1/1) ... [2018-06-22 01:52:05,236 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:52:05,238 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:52:05,238 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:52:05,238 INFO ]: RCFGBuilder initialized [2018-06-22 01:52:05,239 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:52:05" (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 01:52:05,252 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:52:05,252 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:52:05,253 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:52:05,253 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:52:05,253 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:52:05,253 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 01:52:05,424 INFO ]: Using library mode [2018-06-22 01:52:05,425 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:52:05 BoogieIcfgContainer [2018-06-22 01:52:05,425 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:52:05,426 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:52:05,426 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:52:05,429 INFO ]: TraceAbstraction initialized [2018-06-22 01:52:05,430 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:52:05" (1/3) ... [2018-06-22 01:52:05,431 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575d072c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:52:05, skipping insertion in model container [2018-06-22 01:52:05,431 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:52:05" (2/3) ... [2018-06-22 01:52:05,431 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575d072c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:52:05, skipping insertion in model container [2018-06-22 01:52:05,431 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:52:05" (3/3) ... [2018-06-22 01:52:05,433 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:52:05,443 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:52:05,450 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:52:05,493 INFO ]: Using default assertion order modulation [2018-06-22 01:52:05,494 INFO ]: Interprodecural is true [2018-06-22 01:52:05,494 INFO ]: Hoare is false [2018-06-22 01:52:05,494 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:52:05,494 INFO ]: Backedges is TWOTRACK [2018-06-22 01:52:05,494 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:52:05,494 INFO ]: Difference is false [2018-06-22 01:52:05,494 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:52:05,494 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:52:05,513 INFO ]: Start isEmpty. Operand 14 states. [2018-06-22 01:52:05,528 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 01:52:05,528 INFO ]: Found error trace [2018-06-22 01:52:05,529 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:52:05,529 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:52:05,533 INFO ]: Analyzing trace with hash -663161759, now seen corresponding path program 1 times [2018-06-22 01:52:05,535 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:52:05,535 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:52:05,577 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:52:05,577 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:52:05,577 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:52:05,609 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:52:05,795 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:52:05,798 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:52:05,798 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:52:05,800 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:52:05,812 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:52:05,812 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:52:05,815 INFO ]: Start difference. First operand 14 states. Second operand 4 states. [2018-06-22 01:52:06,029 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:52:06,029 INFO ]: Finished difference Result 20 states and 24 transitions. [2018-06-22 01:52:06,030 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:52:06,031 INFO ]: Start accepts. Automaton has 4 states. Word has length 7 [2018-06-22 01:52:06,031 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:52:06,039 INFO ]: With dead ends: 20 [2018-06-22 01:52:06,039 INFO ]: Without dead ends: 20 [2018-06-22 01:52:06,041 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 01:52:06,060 INFO ]: Start minimizeSevpa. Operand 20 states. [2018-06-22 01:52:06,082 INFO ]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-06-22 01:52:06,084 INFO ]: Start removeUnreachable. Operand 20 states. [2018-06-22 01:52:06,084 INFO ]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2018-06-22 01:52:06,087 INFO ]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 7 [2018-06-22 01:52:06,088 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:52:06,088 INFO ]: Abstraction has 20 states and 24 transitions. [2018-06-22 01:52:06,088 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:52:06,088 INFO ]: Start isEmpty. Operand 20 states and 24 transitions. [2018-06-22 01:52:06,089 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:52:06,089 INFO ]: Found error trace [2018-06-22 01:52:06,089 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:52:06,089 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:52:06,090 INFO ]: Analyzing trace with hash 959117700, now seen corresponding path program 1 times [2018-06-22 01:52:06,090 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:52:06,090 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:52:06,092 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:52:06,092 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:52:06,092 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:52:06,105 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:52:06,143 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:52:06,143 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:52:06,144 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 01:52:06,145 INFO ]: Interpolant automaton has 3 states [2018-06-22 01:52:06,145 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 01:52:06,145 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:52:06,145 INFO ]: Start difference. First operand 20 states and 24 transitions. Second operand 3 states. [2018-06-22 01:52:06,159 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:52:06,159 INFO ]: Finished difference Result 26 states and 32 transitions. [2018-06-22 01:52:06,159 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:52:06,159 INFO ]: Start accepts. Automaton has 3 states. Word has length 8 [2018-06-22 01:52:06,159 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:52:06,160 INFO ]: With dead ends: 26 [2018-06-22 01:52:06,160 INFO ]: Without dead ends: 26 [2018-06-22 01:52:06,161 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 01:52:06,161 INFO ]: Start minimizeSevpa. Operand 26 states. [2018-06-22 01:52:06,165 INFO ]: Finished minimizeSevpa. Reduced states from 26 to 22. [2018-06-22 01:52:06,165 INFO ]: Start removeUnreachable. Operand 22 states. [2018-06-22 01:52:06,166 INFO ]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2018-06-22 01:52:06,166 INFO ]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 8 [2018-06-22 01:52:06,166 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:52:06,166 INFO ]: Abstraction has 22 states and 26 transitions. [2018-06-22 01:52:06,166 INFO ]: Interpolant automaton has 3 states. [2018-06-22 01:52:06,166 INFO ]: Start isEmpty. Operand 22 states and 26 transitions. [2018-06-22 01:52:06,169 INFO ]: Finished isEmpty. Found accepting run of length 17 [2018-06-22 01:52:06,169 INFO ]: Found error trace [2018-06-22 01:52:06,169 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:52:06,169 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:52:06,169 INFO ]: Analyzing trace with hash 1952669865, now seen corresponding path program 1 times [2018-06-22 01:52:06,169 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:52:06,169 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:52:06,170 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:52:06,170 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:52:06,170 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:52:06,186 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:52:06,759 WARN ]: Spent 274.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 16 [2018-06-22 01:52:06,944 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 01:52:06,944 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:52:06,944 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 01:52:06,952 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:52:06,980 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:52:06,987 INFO ]: Computing forward predicates... [2018-06-22 01:52:07,259 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 01:52:07,288 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:52:07,288 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 01:52:07,288 INFO ]: Interpolant automaton has 12 states [2018-06-22 01:52:07,288 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 01:52:07,289 INFO ]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2018-06-22 01:52:07,289 INFO ]: Start difference. First operand 22 states and 26 transitions. Second operand 12 states. [2018-06-22 01:52:07,761 WARN ]: Spent 209.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 17 [2018-06-22 01:52:08,526 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:52:08,526 INFO ]: Finished difference Result 23 states and 28 transitions. [2018-06-22 01:52:08,527 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-06-22 01:52:08,527 INFO ]: Start accepts. Automaton has 12 states. Word has length 16 [2018-06-22 01:52:08,527 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:52:08,527 INFO ]: With dead ends: 23 [2018-06-22 01:52:08,527 INFO ]: Without dead ends: 0 [2018-06-22 01:52:08,528 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2018-06-22 01:52:08,528 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:52:08,528 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:52:08,528 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:52:08,528 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:52:08,528 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2018-06-22 01:52:08,528 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:52:08,528 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:52:08,528 INFO ]: Interpolant automaton has 12 states. [2018-06-22 01:52:08,528 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:52:08,529 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:52:08,532 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:52:08 BoogieIcfgContainer [2018-06-22 01:52:08,533 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:52:08,533 INFO ]: Toolchain (without parser) took 3410.02 ms. Allocated memory was 306.7 MB in the beginning and 324.5 MB in the end (delta: 17.8 MB). Free memory was 264.1 MB in the beginning and 260.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:52:08,534 INFO ]: SmtParser took 0.12 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:52:08,535 INFO ]: ChcToBoogie took 68.59 ms. Allocated memory is still 306.7 MB. Free memory was 263.1 MB in the beginning and 261.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:52:08,535 INFO ]: Boogie Preprocessor took 37.68 ms. Allocated memory is still 306.7 MB. Free memory was 261.1 MB in the beginning and 260.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 01:52:08,536 INFO ]: RCFGBuilder took 186.99 ms. Allocated memory is still 306.7 MB. Free memory was 260.1 MB in the beginning and 252.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:52:08,536 INFO ]: TraceAbstraction took 3106.36 ms. Allocated memory was 306.7 MB in the beginning and 324.5 MB in the end (delta: 17.8 MB). Free memory was 252.1 MB in the beginning and 260.9 MB in the end (delta: -8.8 MB). Peak memory consumption was 9.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:52:08,541 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.12 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 68.59 ms. Allocated memory is still 306.7 MB. Free memory was 263.1 MB in the beginning and 261.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 37.68 ms. Allocated memory is still 306.7 MB. Free memory was 261.1 MB in the beginning and 260.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 186.99 ms. Allocated memory is still 306.7 MB. Free memory was 260.1 MB in the beginning and 252.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3106.36 ms. Allocated memory was 306.7 MB in the beginning and 324.5 MB in the end (delta: 17.8 MB). Free memory was 252.1 MB in the beginning and 260.9 MB in the end (delta: -8.8 MB). Peak memory consumption was 9.0 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, 14 locations, 1 error locations. SAFE Result, 3.0s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 36 SDtfs, 32 SDslu, 50 SDs, 0 SdLazy, 108 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 1811 SizeOfPredicates, 7 NumberOfNonLiveVariables, 64 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 8/10 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/sum_intro.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-52-08-560.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum_intro.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-52-08-560.csv Received shutdown request...