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/hrec.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:47:50,055 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:47:50,063 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:47:50,093 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:47:50,093 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:47:50,094 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:47:50,098 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:47:50,109 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:47:50,111 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:47:50,113 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:47:50,119 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:47:50,119 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:47:50,120 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:47:50,121 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:47:50,130 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:47:50,131 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:47:50,133 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:47:50,144 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:47:50,146 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:47:50,155 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:47:50,157 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:47:50,166 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-06-22 01:47:50,180 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:47:50,181 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:47:50,181 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:47:50,182 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:47:50,195 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:47:50,196 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:47:50,196 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:47:50,219 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:47:50,219 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:47:50,219 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:47:50,219 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:47:50,221 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:47:50,222 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:47:50,222 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:47:50,222 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:47:50,222 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:47:50,222 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:47:50,223 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:47:50,223 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:47:50,223 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:47:50,223 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:47:50,223 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:47:50,224 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:47:50,224 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:47:50,226 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:47:50,226 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:47:50,292 INFO ]: Repository-Root is: /tmp [2018-06-22 01:47:50,311 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:47:50,318 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:47:50,320 INFO ]: Initializing SmtParser... [2018-06-22 01:47:50,320 INFO ]: SmtParser initialized [2018-06-22 01:47:50,321 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/hrec.smt2 [2018-06-22 01:47:50,323 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 01:47:50,418 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/hrec.smt2 unknown [2018-06-22 01:47:50,793 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/hrec.smt2 [2018-06-22 01:47:50,798 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:47:50,803 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:47:50,804 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:47:50,804 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:47:50,804 INFO ]: ChcToBoogie initialized [2018-06-22 01:47:50,810 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:47:50" (1/1) ... [2018-06-22 01:47:50,873 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:47:50 Unit [2018-06-22 01:47:50,873 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:47:50,874 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:47:50,874 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:47:50,874 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:47:50,898 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:47:50" (1/1) ... [2018-06-22 01:47:50,906 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:47:50" (1/1) ... [2018-06-22 01:47:50,913 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:47:50" (1/1) ... [2018-06-22 01:47:50,914 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:47:50" (1/1) ... [2018-06-22 01:47:50,917 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:47:50" (1/1) ... [2018-06-22 01:47:50,920 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:47:50" (1/1) ... [2018-06-22 01:47:50,921 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:47:50" (1/1) ... [2018-06-22 01:47:50,923 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:47:50,924 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:47:50,924 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:47:50,924 INFO ]: RCFGBuilder initialized [2018-06-22 01:47:50,928 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:47:50" (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) [2018-06-22 01:47:50,940 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:47:50,940 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:47:50,940 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:47:50,940 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:47:50,940 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:47:50,940 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 [2018-06-22 01:47:51,174 INFO ]: Using library mode [2018-06-22 01:47:51,175 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:47:51 BoogieIcfgContainer [2018-06-22 01:47:51,175 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:47:51,176 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:47:51,176 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:47:51,179 INFO ]: TraceAbstraction initialized [2018-06-22 01:47:51,180 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:47:50" (1/3) ... [2018-06-22 01:47:51,180 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e4998a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:47:51, skipping insertion in model container [2018-06-22 01:47:51,180 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:47:50" (2/3) ... [2018-06-22 01:47:51,181 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e4998a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:47:51, skipping insertion in model container [2018-06-22 01:47:51,181 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:47:51" (3/3) ... [2018-06-22 01:47:51,182 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:47:51,195 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:47:51,204 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:47:51,247 INFO ]: Using default assertion order modulation [2018-06-22 01:47:51,247 INFO ]: Interprodecural is true [2018-06-22 01:47:51,247 INFO ]: Hoare is false [2018-06-22 01:47:51,247 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:47:51,247 INFO ]: Backedges is TWOTRACK [2018-06-22 01:47:51,247 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:47:51,247 INFO ]: Difference is false [2018-06-22 01:47:51,247 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:47:51,247 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:47:51,260 INFO ]: Start isEmpty. Operand 17 states. [2018-06-22 01:47:51,271 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 01:47:51,271 INFO ]: Found error trace [2018-06-22 01:47:51,272 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:47:51,272 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:47:51,277 INFO ]: Analyzing trace with hash -1723426455, now seen corresponding path program 1 times [2018-06-22 01:47:51,278 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:47:51,279 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:47:51,312 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:47:51,312 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:47:51,312 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:47:51,336 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:47:51,361 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:47:51,364 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:47:51,364 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 01:47:51,366 INFO ]: Interpolant automaton has 2 states [2018-06-22 01:47:51,383 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 01:47:51,384 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 01:47:51,388 INFO ]: Start difference. First operand 17 states. Second operand 2 states. [2018-06-22 01:47:51,406 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:47:51,406 INFO ]: Finished difference Result 15 states and 19 transitions. [2018-06-22 01:47:51,406 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 01:47:51,407 INFO ]: Start accepts. Automaton has 2 states. Word has length 7 [2018-06-22 01:47:51,408 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:47:51,417 INFO ]: With dead ends: 15 [2018-06-22 01:47:51,417 INFO ]: Without dead ends: 15 [2018-06-22 01:47:51,418 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 01:47:51,432 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 01:47:51,449 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 01:47:51,450 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 01:47:51,451 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2018-06-22 01:47:51,452 INFO ]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 7 [2018-06-22 01:47:51,453 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:47:51,453 INFO ]: Abstraction has 15 states and 19 transitions. [2018-06-22 01:47:51,453 INFO ]: Interpolant automaton has 2 states. [2018-06-22 01:47:51,453 INFO ]: Start isEmpty. Operand 15 states and 19 transitions. [2018-06-22 01:47:51,454 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 01:47:51,455 INFO ]: Found error trace [2018-06-22 01:47:51,455 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:47:51,455 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:47:51,455 INFO ]: Analyzing trace with hash 63157338, now seen corresponding path program 1 times [2018-06-22 01:47:51,455 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:47:51,455 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:47:51,456 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:47:51,456 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:47:51,456 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:47:51,468 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:47:51,551 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:47:51,551 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:47:51,551 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:47:51,553 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:47:51,553 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:47:51,553 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:47:51,553 INFO ]: Start difference. First operand 15 states and 19 transitions. Second operand 4 states. [2018-06-22 01:47:51,730 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:47:51,730 INFO ]: Finished difference Result 27 states and 35 transitions. [2018-06-22 01:47:51,732 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:47:51,732 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 01:47:51,732 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:47:51,733 INFO ]: With dead ends: 27 [2018-06-22 01:47:51,733 INFO ]: Without dead ends: 27 [2018-06-22 01:47:51,734 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:47:51,734 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-22 01:47:51,740 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-06-22 01:47:51,740 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-22 01:47:51,742 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2018-06-22 01:47:51,742 INFO ]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 9 [2018-06-22 01:47:51,743 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:47:51,743 INFO ]: Abstraction has 27 states and 35 transitions. [2018-06-22 01:47:51,744 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:47:51,744 INFO ]: Start isEmpty. Operand 27 states and 35 transitions. [2018-06-22 01:47:51,745 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 01:47:51,745 INFO ]: Found error trace [2018-06-22 01:47:51,745 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:47:51,745 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:47:51,745 INFO ]: Analyzing trace with hash -2061730349, now seen corresponding path program 1 times [2018-06-22 01:47:51,745 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:47:51,745 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:47:51,747 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:47:51,747 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:47:51,748 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:47:51,761 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:47:52,015 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:47:52,016 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:47:52,016 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-22 01:47:52,016 INFO ]: Interpolant automaton has 5 states [2018-06-22 01:47:52,016 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 01:47:52,016 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:47:52,016 INFO ]: Start difference. First operand 27 states and 35 transitions. Second operand 5 states. [2018-06-22 01:47:52,406 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:47:52,406 INFO ]: Finished difference Result 44 states and 65 transitions. [2018-06-22 01:47:52,408 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:47:52,409 INFO ]: Start accepts. Automaton has 5 states. Word has length 10 [2018-06-22 01:47:52,409 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:47:52,414 INFO ]: With dead ends: 44 [2018-06-22 01:47:52,414 INFO ]: Without dead ends: 42 [2018-06-22 01:47:52,416 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-22 01:47:52,416 INFO ]: Start minimizeSevpa. Operand 42 states. [2018-06-22 01:47:52,429 INFO ]: Finished minimizeSevpa. Reduced states from 42 to 30. [2018-06-22 01:47:52,429 INFO ]: Start removeUnreachable. Operand 30 states. [2018-06-22 01:47:52,430 INFO ]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2018-06-22 01:47:52,430 INFO ]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 10 [2018-06-22 01:47:52,430 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:47:52,430 INFO ]: Abstraction has 30 states and 39 transitions. [2018-06-22 01:47:52,430 INFO ]: Interpolant automaton has 5 states. [2018-06-22 01:47:52,431 INFO ]: Start isEmpty. Operand 30 states and 39 transitions. [2018-06-22 01:47:52,432 INFO ]: Finished isEmpty. Found accepting run of length 20 [2018-06-22 01:47:52,434 INFO ]: Found error trace [2018-06-22 01:47:52,434 INFO ]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:47:52,434 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:47:52,434 INFO ]: Analyzing trace with hash 2132815589, now seen corresponding path program 1 times [2018-06-22 01:47:52,434 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:47:52,434 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:47:52,435 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:47:52,435 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:47:52,435 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:47:52,458 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:47:52,614 INFO ]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 01:47:52,614 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:47:52,614 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 01:47:52,623 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:47:52,648 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:47:52,656 INFO ]: Computing forward predicates... [2018-06-22 01:47:52,832 INFO ]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 01:47:52,853 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:47:52,853 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2018-06-22 01:47:52,853 INFO ]: Interpolant automaton has 11 states [2018-06-22 01:47:52,854 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 01:47:52,854 INFO ]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-06-22 01:47:52,854 INFO ]: Start difference. First operand 30 states and 39 transitions. Second operand 11 states. [2018-06-22 01:47:53,740 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:47:53,740 INFO ]: Finished difference Result 51 states and 84 transitions. [2018-06-22 01:47:53,743 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 01:47:53,743 INFO ]: Start accepts. Automaton has 11 states. Word has length 19 [2018-06-22 01:47:53,743 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:47:53,745 INFO ]: With dead ends: 51 [2018-06-22 01:47:53,745 INFO ]: Without dead ends: 51 [2018-06-22 01:47:53,746 INFO ]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-06-22 01:47:53,746 INFO ]: Start minimizeSevpa. Operand 51 states. [2018-06-22 01:47:53,754 INFO ]: Finished minimizeSevpa. Reduced states from 51 to 39. [2018-06-22 01:47:53,755 INFO ]: Start removeUnreachable. Operand 39 states. [2018-06-22 01:47:53,756 INFO ]: Finished removeUnreachable. Reduced from 39 states to 39 states and 57 transitions. [2018-06-22 01:47:53,756 INFO ]: Start accepts. Automaton has 39 states and 57 transitions. Word has length 19 [2018-06-22 01:47:53,757 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:47:53,757 INFO ]: Abstraction has 39 states and 57 transitions. [2018-06-22 01:47:53,757 INFO ]: Interpolant automaton has 11 states. [2018-06-22 01:47:53,757 INFO ]: Start isEmpty. Operand 39 states and 57 transitions. [2018-06-22 01:47:53,759 INFO ]: Finished isEmpty. Found accepting run of length 21 [2018-06-22 01:47:53,759 INFO ]: Found error trace [2018-06-22 01:47:53,759 INFO ]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:47:53,759 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:47:53,759 INFO ]: Analyzing trace with hash 520272202, now seen corresponding path program 1 times [2018-06-22 01:47:53,759 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:47:53,759 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:47:53,760 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:47:53,760 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:47:53,760 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:47:53,771 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:47:53,870 INFO ]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 01:47:53,870 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:47:53,870 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:47:53,879 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:47:53,893 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:47:53,895 INFO ]: Computing forward predicates... [2018-06-22 01:47:53,993 INFO ]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 01:47:54,012 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:47:54,012 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 01:47:54,012 INFO ]: Interpolant automaton has 13 states [2018-06-22 01:47:54,013 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 01:47:54,013 INFO ]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-06-22 01:47:54,013 INFO ]: Start difference. First operand 39 states and 57 transitions. Second operand 13 states. [2018-06-22 01:47:54,949 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:47:54,949 INFO ]: Finished difference Result 55 states and 92 transitions. [2018-06-22 01:47:54,950 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 01:47:54,950 INFO ]: Start accepts. Automaton has 13 states. Word has length 20 [2018-06-22 01:47:54,950 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:47:54,952 INFO ]: With dead ends: 55 [2018-06-22 01:47:54,952 INFO ]: Without dead ends: 55 [2018-06-22 01:47:54,952 INFO ]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2018-06-22 01:47:54,953 INFO ]: Start minimizeSevpa. Operand 55 states. [2018-06-22 01:47:54,962 INFO ]: Finished minimizeSevpa. Reduced states from 55 to 41. [2018-06-22 01:47:54,962 INFO ]: Start removeUnreachable. Operand 41 states. [2018-06-22 01:47:54,963 INFO ]: Finished removeUnreachable. Reduced from 41 states to 41 states and 61 transitions. [2018-06-22 01:47:54,963 INFO ]: Start accepts. Automaton has 41 states and 61 transitions. Word has length 20 [2018-06-22 01:47:54,964 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:47:54,964 INFO ]: Abstraction has 41 states and 61 transitions. [2018-06-22 01:47:54,964 INFO ]: Interpolant automaton has 13 states. [2018-06-22 01:47:54,964 INFO ]: Start isEmpty. Operand 41 states and 61 transitions. [2018-06-22 01:47:54,966 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 01:47:54,966 INFO ]: Found error trace [2018-06-22 01:47:54,966 INFO ]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:47:54,966 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:47:54,966 INFO ]: Analyzing trace with hash 787804812, now seen corresponding path program 1 times [2018-06-22 01:47:54,966 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:47:54,966 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:47:54,967 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:47:54,967 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:47:54,967 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:47:54,977 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:47:55,030 INFO ]: Checked inductivity of 24 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 01:47:55,030 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:47:55,030 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:47:55,038 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:47:55,058 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:47:55,061 INFO ]: Computing forward predicates... [2018-06-22 01:47:55,187 INFO ]: Checked inductivity of 24 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-22 01:47:55,218 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:47:55,218 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 12 [2018-06-22 01:47:55,218 INFO ]: Interpolant automaton has 12 states [2018-06-22 01:47:55,218 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 01:47:55,218 INFO ]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-06-22 01:47:55,218 INFO ]: Start difference. First operand 41 states and 61 transitions. Second operand 12 states. [2018-06-22 01:47:55,643 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:47:55,643 INFO ]: Finished difference Result 68 states and 131 transitions. [2018-06-22 01:47:55,647 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-06-22 01:47:55,647 INFO ]: Start accepts. Automaton has 12 states. Word has length 29 [2018-06-22 01:47:55,647 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:47:55,650 INFO ]: With dead ends: 68 [2018-06-22 01:47:55,650 INFO ]: Without dead ends: 68 [2018-06-22 01:47:55,651 INFO ]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2018-06-22 01:47:55,651 INFO ]: Start minimizeSevpa. Operand 68 states. [2018-06-22 01:47:55,667 INFO ]: Finished minimizeSevpa. Reduced states from 68 to 48. [2018-06-22 01:47:55,667 INFO ]: Start removeUnreachable. Operand 48 states. [2018-06-22 01:47:55,668 INFO ]: Finished removeUnreachable. Reduced from 48 states to 48 states and 77 transitions. [2018-06-22 01:47:55,668 INFO ]: Start accepts. Automaton has 48 states and 77 transitions. Word has length 29 [2018-06-22 01:47:55,669 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:47:55,669 INFO ]: Abstraction has 48 states and 77 transitions. [2018-06-22 01:47:55,669 INFO ]: Interpolant automaton has 12 states. [2018-06-22 01:47:55,669 INFO ]: Start isEmpty. Operand 48 states and 77 transitions. [2018-06-22 01:47:55,671 INFO ]: Finished isEmpty. Found accepting run of length 29 [2018-06-22 01:47:55,671 INFO ]: Found error trace [2018-06-22 01:47:55,671 INFO ]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-06-22 01:47:55,671 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:47:55,672 INFO ]: Analyzing trace with hash -478441247, now seen corresponding path program 2 times [2018-06-22 01:47:55,672 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:47:55,672 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:47:55,673 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:47:55,673 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:47:55,673 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:47:55,693 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:47:55,915 INFO ]: Checked inductivity of 23 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-22 01:47:55,915 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:47:55,915 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:47:55,922 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 01:47:55,941 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 01:47:55,941 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:47:55,943 INFO ]: Computing forward predicates... [2018-06-22 01:47:56,069 INFO ]: Checked inductivity of 23 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-22 01:47:56,107 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:47:56,107 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2018-06-22 01:47:56,107 INFO ]: Interpolant automaton has 13 states [2018-06-22 01:47:56,107 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 01:47:56,107 INFO ]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2018-06-22 01:47:56,108 INFO ]: Start difference. First operand 48 states and 77 transitions. Second operand 13 states. [2018-06-22 01:47:56,425 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:47:56,425 INFO ]: Finished difference Result 36 states and 52 transitions. [2018-06-22 01:47:56,426 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 01:47:56,426 INFO ]: Start accepts. Automaton has 13 states. Word has length 28 [2018-06-22 01:47:56,426 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:47:56,426 INFO ]: With dead ends: 36 [2018-06-22 01:47:56,426 INFO ]: Without dead ends: 0 [2018-06-22 01:47:56,427 INFO ]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2018-06-22 01:47:56,427 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:47:56,427 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:47:56,427 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:47:56,427 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:47:56,427 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2018-06-22 01:47:56,427 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:47:56,427 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:47:56,427 INFO ]: Interpolant automaton has 13 states. [2018-06-22 01:47:56,427 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:47:56,427 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:47:56,432 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:47:56 BoogieIcfgContainer [2018-06-22 01:47:56,433 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:47:56,433 INFO ]: Toolchain (without parser) took 5635.41 ms. Allocated memory was 291.5 MB in the beginning and 347.6 MB in the end (delta: 56.1 MB). Free memory was 246.0 MB in the beginning and 193.4 MB in the end (delta: 52.7 MB). Peak memory consumption was 108.8 MB. Max. memory is 3.6 GB. [2018-06-22 01:47:56,435 INFO ]: SmtParser took 0.12 ms. Allocated memory is still 291.5 MB. Free memory is still 256.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:47:56,436 INFO ]: ChcToBoogie took 69.56 ms. Allocated memory is still 291.5 MB. Free memory was 246.0 MB in the beginning and 244.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:47:56,436 INFO ]: Boogie Preprocessor took 48.69 ms. Allocated memory is still 291.5 MB. Free memory was 244.1 MB in the beginning and 242.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:47:56,438 INFO ]: RCFGBuilder took 251.47 ms. Allocated memory is still 291.5 MB. Free memory was 242.1 MB in the beginning and 234.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:47:56,438 INFO ]: TraceAbstraction took 5256.20 ms. Allocated memory was 291.5 MB in the beginning and 347.6 MB in the end (delta: 56.1 MB). Free memory was 234.1 MB in the beginning and 193.4 MB in the end (delta: 40.7 MB). Peak memory consumption was 96.8 MB. Max. memory is 3.6 GB. [2018-06-22 01:47:56,442 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 291.5 MB. Free memory is still 256.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 69.56 ms. Allocated memory is still 291.5 MB. Free memory was 246.0 MB in the beginning and 244.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 48.69 ms. Allocated memory is still 291.5 MB. Free memory was 244.1 MB in the beginning and 242.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 251.47 ms. Allocated memory is still 291.5 MB. Free memory was 242.1 MB in the beginning and 234.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 5256.20 ms. Allocated memory was 291.5 MB in the beginning and 347.6 MB in the end (delta: 56.1 MB). Free memory was 234.1 MB in the beginning and 193.4 MB in the end (delta: 40.7 MB). Peak memory consumption was 96.8 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, 17 locations, 1 error locations. SAFE Result, 5.1s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 3.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 186 SDtfs, 229 SDslu, 636 SDs, 0 SdLazy, 918 SolverSat, 164 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 175 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=6, 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, 7 MinimizatonAttempts, 58 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 218 NumberOfCodeBlocks, 218 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 207 ConstructedInterpolants, 0 QuantifiedInterpolants, 11250 SizeOfPredicates, 36 NumberOfNonLiveVariables, 358 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 101/126 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/hrec.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-47-56-454.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/hrec.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-47-56-454.csv Received shutdown request...