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/eldarica-misc/LIA/llreve/while_after_while_if_safe.c-1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:17:55,359 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:17:55,361 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:17:55,372 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:17:55,373 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:17:55,373 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:17:55,374 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:17:55,377 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:17:55,378 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:17:55,379 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:17:55,380 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:17:55,380 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:17:55,381 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:17:55,382 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:17:55,382 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:17:55,383 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:17:55,385 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:17:55,387 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:17:55,388 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:17:55,389 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:17:55,390 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:17:55,393 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 01:17:55,393 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 01:17:55,393 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 01:17:55,394 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 01:17:55,395 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 01:17:55,395 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 01:17:55,396 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 01:17:55,397 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 01:17:55,397 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:17:55,398 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:17:55,399 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:17:55,399 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:17:55,400 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:17:55,400 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:17:55,401 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:17:55,414 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:17:55,414 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:17:55,414 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:17:55,415 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:17:55,416 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:17:55,416 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:17:55,416 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:17:55,416 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:17:55,416 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:17:55,417 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:17:55,417 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:17:55,417 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:17:55,418 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:17:55,418 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:17:55,418 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:17:55,418 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:17:55,418 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:17:55,420 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:17:55,420 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:17:55,458 INFO ]: Repository-Root is: /tmp [2018-06-22 01:17:55,474 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:17:55,479 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:17:55,481 INFO ]: Initializing SmtParser... [2018-06-22 01:17:55,481 INFO ]: SmtParser initialized [2018-06-22 01:17:55,482 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/llreve/while_after_while_if_safe.c-1.smt2 [2018-06-22 01:17:55,484 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 01:17:55,579 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/while_after_while_if_safe.c-1.smt2 unknown [2018-06-22 01:17:55,852 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/while_after_while_if_safe.c-1.smt2 [2018-06-22 01:17:55,857 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:17:55,862 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:17:55,863 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:17:55,863 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:17:55,863 INFO ]: ChcToBoogie initialized [2018-06-22 01:17:55,866 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:17:55" (1/1) ... [2018-06-22 01:17:55,930 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:17:55 Unit [2018-06-22 01:17:55,930 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:17:55,930 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:17:55,930 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:17:55,930 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:17:55,947 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:17:55" (1/1) ... [2018-06-22 01:17:55,947 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:17:55" (1/1) ... [2018-06-22 01:17:55,952 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:17:55" (1/1) ... [2018-06-22 01:17:55,952 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:17:55" (1/1) ... [2018-06-22 01:17:55,958 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:17:55" (1/1) ... [2018-06-22 01:17:55,959 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:17:55" (1/1) ... [2018-06-22 01:17:55,960 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:17:55" (1/1) ... [2018-06-22 01:17:55,962 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:17:55,963 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:17:55,963 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:17:55,963 INFO ]: RCFGBuilder initialized [2018-06-22 01:17:55,964 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:17:55" (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 01:17:55,975 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:17:55,975 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:17:55,975 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:17:55,975 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:17:55,975 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:17:55,975 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 01:17:56,306 INFO ]: Using library mode [2018-06-22 01:17:56,307 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:17:56 BoogieIcfgContainer [2018-06-22 01:17:56,307 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:17:56,308 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:17:56,308 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:17:56,317 INFO ]: TraceAbstraction initialized [2018-06-22 01:17:56,317 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:17:55" (1/3) ... [2018-06-22 01:17:56,318 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c1600d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:17:56, skipping insertion in model container [2018-06-22 01:17:56,318 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:17:55" (2/3) ... [2018-06-22 01:17:56,318 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c1600d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:17:56, skipping insertion in model container [2018-06-22 01:17:56,318 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:17:56" (3/3) ... [2018-06-22 01:17:56,320 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:17:56,326 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:17:56,332 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:17:56,367 INFO ]: Using default assertion order modulation [2018-06-22 01:17:56,368 INFO ]: Interprodecural is true [2018-06-22 01:17:56,368 INFO ]: Hoare is false [2018-06-22 01:17:56,368 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:17:56,368 INFO ]: Backedges is TWOTRACK [2018-06-22 01:17:56,368 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:17:56,368 INFO ]: Difference is false [2018-06-22 01:17:56,368 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:17:56,368 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:17:56,384 INFO ]: Start isEmpty. Operand 15 states. [2018-06-22 01:17:56,397 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 01:17:56,397 INFO ]: Found error trace [2018-06-22 01:17:56,398 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:17:56,399 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:17:56,403 INFO ]: Analyzing trace with hash -1993267262, now seen corresponding path program 1 times [2018-06-22 01:17:56,404 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:17:56,405 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:17:56,440 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:17:56,440 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:17:56,440 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:17:56,490 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:17:56,598 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:17:56,599 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:17:56,599 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-22 01:17:56,601 INFO ]: Interpolant automaton has 6 states [2018-06-22 01:17:56,611 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 01:17:56,611 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 01:17:56,614 INFO ]: Start difference. First operand 15 states. Second operand 6 states. [2018-06-22 01:17:57,019 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:17:57,019 INFO ]: Finished difference Result 31 states and 51 transitions. [2018-06-22 01:17:57,019 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 01:17:57,021 INFO ]: Start accepts. Automaton has 6 states. Word has length 11 [2018-06-22 01:17:57,021 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:17:57,031 INFO ]: With dead ends: 31 [2018-06-22 01:17:57,031 INFO ]: Without dead ends: 31 [2018-06-22 01:17:57,033 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-06-22 01:17:57,051 INFO ]: Start minimizeSevpa. Operand 31 states. [2018-06-22 01:17:57,077 INFO ]: Finished minimizeSevpa. Reduced states from 31 to 16. [2018-06-22 01:17:57,078 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-22 01:17:57,079 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 27 transitions. [2018-06-22 01:17:57,081 INFO ]: Start accepts. Automaton has 16 states and 27 transitions. Word has length 11 [2018-06-22 01:17:57,081 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:17:57,081 INFO ]: Abstraction has 16 states and 27 transitions. [2018-06-22 01:17:57,081 INFO ]: Interpolant automaton has 6 states. [2018-06-22 01:17:57,081 INFO ]: Start isEmpty. Operand 16 states and 27 transitions. [2018-06-22 01:17:57,082 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 01:17:57,082 INFO ]: Found error trace [2018-06-22 01:17:57,082 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:17:57,082 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:17:57,082 INFO ]: Analyzing trace with hash -1206990134, now seen corresponding path program 1 times [2018-06-22 01:17:57,082 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:17:57,082 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:17:57,083 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:17:57,083 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:17:57,083 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:17:57,125 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:17:57,318 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:17:57,318 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:17:57,318 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:17:57,319 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:17:57,319 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:17:57,320 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:17:57,320 INFO ]: Start difference. First operand 16 states and 27 transitions. Second operand 4 states. [2018-06-22 01:17:57,509 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:17:57,509 INFO ]: Finished difference Result 22 states and 36 transitions. [2018-06-22 01:17:57,509 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 01:17:57,509 INFO ]: Start accepts. Automaton has 4 states. Word has length 12 [2018-06-22 01:17:57,509 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:17:57,510 INFO ]: With dead ends: 22 [2018-06-22 01:17:57,510 INFO ]: Without dead ends: 22 [2018-06-22 01:17:57,510 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 01:17:57,510 INFO ]: Start minimizeSevpa. Operand 22 states. [2018-06-22 01:17:57,513 INFO ]: Finished minimizeSevpa. Reduced states from 22 to 18. [2018-06-22 01:17:57,513 INFO ]: Start removeUnreachable. Operand 18 states. [2018-06-22 01:17:57,514 INFO ]: Finished removeUnreachable. Reduced from 18 states to 18 states and 31 transitions. [2018-06-22 01:17:57,514 INFO ]: Start accepts. Automaton has 18 states and 31 transitions. Word has length 12 [2018-06-22 01:17:57,514 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:17:57,514 INFO ]: Abstraction has 18 states and 31 transitions. [2018-06-22 01:17:57,514 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:17:57,514 INFO ]: Start isEmpty. Operand 18 states and 31 transitions. [2018-06-22 01:17:57,514 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 01:17:57,514 INFO ]: Found error trace [2018-06-22 01:17:57,514 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:17:57,515 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:17:57,515 INFO ]: Analyzing trace with hash -1600081205, now seen corresponding path program 1 times [2018-06-22 01:17:57,515 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:17:57,515 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:17:57,515 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:17:57,515 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:17:57,515 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:17:57,532 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:17:57,732 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:17:57,732 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:17:57,732 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-22 01:17:57,733 INFO ]: Interpolant automaton has 7 states [2018-06-22 01:17:57,733 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 01:17:57,733 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 01:17:57,733 INFO ]: Start difference. First operand 18 states and 31 transitions. Second operand 7 states. [2018-06-22 01:17:57,974 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:17:57,974 INFO ]: Finished difference Result 34 states and 54 transitions. [2018-06-22 01:17:57,974 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 01:17:57,974 INFO ]: Start accepts. Automaton has 7 states. Word has length 12 [2018-06-22 01:17:57,974 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:17:57,975 INFO ]: With dead ends: 34 [2018-06-22 01:17:57,975 INFO ]: Without dead ends: 34 [2018-06-22 01:17:57,975 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-06-22 01:17:57,975 INFO ]: Start minimizeSevpa. Operand 34 states. [2018-06-22 01:17:57,979 INFO ]: Finished minimizeSevpa. Reduced states from 34 to 19. [2018-06-22 01:17:57,979 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 01:17:57,979 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 32 transitions. [2018-06-22 01:17:57,979 INFO ]: Start accepts. Automaton has 19 states and 32 transitions. Word has length 12 [2018-06-22 01:17:57,979 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:17:57,980 INFO ]: Abstraction has 19 states and 32 transitions. [2018-06-22 01:17:57,980 INFO ]: Interpolant automaton has 7 states. [2018-06-22 01:17:57,980 INFO ]: Start isEmpty. Operand 19 states and 32 transitions. [2018-06-22 01:17:57,980 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 01:17:57,980 INFO ]: Found error trace [2018-06-22 01:17:57,980 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:17:57,980 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:17:57,980 INFO ]: Analyzing trace with hash -1780167800, now seen corresponding path program 1 times [2018-06-22 01:17:57,980 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:17:57,980 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:17:57,981 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:17:57,981 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:17:57,981 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:17:57,996 INFO ]: Conjunction of SSA is sat [2018-06-22 01:17:57,999 INFO ]: Counterexample might be feasible [2018-06-22 01:17:58,014 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:17:58 BoogieIcfgContainer [2018-06-22 01:17:58,014 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:17:58,014 INFO ]: Toolchain (without parser) took 2157.30 ms. Allocated memory was 307.2 MB in the beginning and 325.1 MB in the end (delta: 17.8 MB). Free memory was 260.8 MB in the beginning and 289.4 MB in the end (delta: -28.7 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:17:58,016 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 307.2 MB. Free memory is still 272.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:17:58,016 INFO ]: ChcToBoogie took 67.12 ms. Allocated memory is still 307.2 MB. Free memory was 260.8 MB in the beginning and 258.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:17:58,017 INFO ]: Boogie Preprocessor took 32.23 ms. Allocated memory is still 307.2 MB. Free memory was 257.8 MB in the beginning and 256.8 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 3.6 GB. [2018-06-22 01:17:58,017 INFO ]: RCFGBuilder took 343.80 ms. Allocated memory is still 307.2 MB. Free memory was 256.8 MB in the beginning and 243.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:17:58,019 INFO ]: TraceAbstraction took 1705.60 ms. Allocated memory was 307.2 MB in the beginning and 325.1 MB in the end (delta: 17.8 MB). Free memory was 242.8 MB in the beginning and 289.4 MB in the end (delta: -46.7 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:17:58,022 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 272.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 67.12 ms. Allocated memory is still 307.2 MB. Free memory was 260.8 MB in the beginning and 258.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 32.23 ms. Allocated memory is still 307.2 MB. Free memory was 257.8 MB in the beginning and 256.8 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 3.6 GB. * RCFGBuilder took 343.80 ms. Allocated memory is still 307.2 MB. Free memory was 256.8 MB in the beginning and 243.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1705.60 ms. Allocated memory was 307.2 MB in the beginning and 325.1 MB in the end (delta: 17.8 MB). Free memory was 242.8 MB in the beginning and 289.4 MB in the end (delta: -46.7 MB). There was no memory consumed. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [UNKNOWN] : assertion can be violated assertion can be violated We found a FailurePath: [L0] CALL call gotoProc(0, 0, 0, 0, 0, 0, 0, 0, 0); [L0] gotoSwitch := gotoSwitch_in; [L0] assume !(hbv_False_1_Int == hbv_False_2_Int); [L0] hhv_inv_main42_0_Int, hhv_inv_main42_1_Int, hhv_inv_main42_2_Int, hhv_inv_main42_3_Int, hhv_inv_main42_4_Int := hbv_False_3_Int, hbv_False_4_Int, hbv_False_5_Int, hbv_False_1_Int, hbv_False_2_Int; [L0] havoc hbv_False_2_Int, hbv_False_4_Int, hbv_False_5_Int, hbv_False_3_Int, hbv_False_1_Int; [L0] assume !(!(hbv_inv_main42_1_Int == 0) && 0 <= hbv_inv_main42_2_Int + -1); [L0] hhv_inv_main27_0_Int, hhv_inv_main27_1_Int, hhv_inv_main27_2_Int, hhv_inv_main27_3_Int, hhv_inv_main27_4_Int, hhv_inv_main27_5_Int, hhv_inv_main27_6_Int, hhv_inv_main27_7_Int := hhv_inv_main42_0_Int, hhv_inv_main42_1_Int, hhv_inv_main42_2_Int, hhv_inv_main42_3_Int, hbv_inv_main42_3_Int, hbv_inv_main42_4_Int, hbv_inv_main42_2_Int, hhv_inv_main42_4_Int; [L0] havoc hbv_inv_main42_4_Int, hbv_inv_main42_2_Int, hbv_inv_main42_3_Int, hbv_inv_main42_1_Int; [L0] assume !(hbv_inv_main27_1_Int == 0) && !(!(hbv_inv_main27_2_Int == 0) && 0 <= hhv_inv_main27_5_Int + -1); [L0] hhv_inv_main26_0_Int, hhv_inv_main26_1_Int, hhv_inv_main26_2_Int, hhv_inv_main26_3_Int, hhv_inv_main26_4_Int, hhv_inv_main26_5_Int, hhv_inv_main26_6_Int, hhv_inv_main26_7_Int := hhv_inv_main27_0_Int, hhv_inv_main27_1_Int, hhv_inv_main27_2_Int, hhv_inv_main27_3_Int, hhv_inv_main27_4_Int, hhv_inv_main27_5_Int, hhv_inv_main27_6_Int, hhv_inv_main27_7_Int; [L0] havoc hbv_inv_main27_1_Int, hbv_inv_main27_2_Int; [L0] assume (((hhv_inv_main26_5_Int == hhv_inv_main26_1_Int && hhv_inv_main26_6_Int == hhv_inv_main26_2_Int) && hhv_inv_main26_7_Int == 0) && !(!(hbv_inv_main26_1_Int == 0) && 0 <= hbv_inv_main26_2_Int + -1)) && hhv_inv_main26_4_Int == hhv_inv_main26_0_Int; [L0] hhv_inv_main8_0_Int, hhv_inv_main8_1_Int, hhv_inv_main8_2_Int, hhv_inv_main8_3_Int, hhv_inv_main8_4_Int, hhv_inv_main8_5_Int, hhv_inv_main8_6_Int := hhv_inv_main26_0_Int, hhv_inv_main26_1_Int, hhv_inv_main26_2_Int, hbv_inv_main26_3_Int, hbv_inv_main26_4_Int, hbv_inv_main26_2_Int, hhv_inv_main26_3_Int; [L0] havoc hbv_inv_main26_1_Int, hbv_inv_main26_2_Int, hbv_inv_main26_4_Int, hbv_inv_main26_3_Int; [L0] assume ((0 <= hbv_inv_main8_3_Int + -1 && !(hbv_inv_main8_1_Int == 0)) && hhv_inv_main8_6_Int == hbv_inv_main8_2_Int + 2) && hhv_inv_main8_5_Int == hbv_inv_main8_3_Int + -1; [L0] hhv_inv_main8_0_Int, hhv_inv_main8_1_Int, hhv_inv_main8_2_Int, hhv_inv_main8_3_Int, hhv_inv_main8_4_Int, hhv_inv_main8_5_Int, hhv_inv_main8_6_Int := hhv_inv_main8_0_Int, hhv_inv_main8_1_Int, hhv_inv_main8_2_Int, hhv_inv_main8_3_Int, hhv_inv_main8_4_Int, hbv_inv_main8_3_Int, hbv_inv_main8_2_Int; [L0] havoc hbv_inv_main8_3_Int, hbv_inv_main8_2_Int, hbv_inv_main8_1_Int; [L0] assume (((hhv_inv_main8_3_Int == hhv_inv_main8_0_Int && hhv_inv_main8_5_Int == hhv_inv_main8_2_Int) && !(0 <= hhv_inv_main8_0_Int + -1)) && hhv_inv_main8_6_Int == 0) && hhv_inv_main8_4_Int == hhv_inv_main8_1_Int; [L0] hhv_inv_main3_0_Int, hhv_inv_main3_1_Int, hhv_inv_main3_2_Int := hhv_inv_main8_0_Int, hhv_inv_main8_1_Int, hhv_inv_main8_2_Int; [L0] assume true; [L0] RET call gotoProc(0, 0, 0, 0, 0, 0, 0, 0, 0); [L0] assert false; - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 1 error locations. UNSAFE Result, 1.6s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 51 SDtfs, 133 SDslu, 138 SDs, 0 SdLazy, 88 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=3, 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, 34 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 671 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/while_after_while_if_safe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-17-58-040.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/while_after_while_if_safe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-17-58-040.csv Received shutdown request...