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/Consistency/graham-scan-full.32.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 00:44:05,401 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 00:44:05,402 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 00:44:05,418 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 00:44:05,419 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 00:44:05,419 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 00:44:05,420 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 00:44:05,424 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 00:44:05,426 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 00:44:05,426 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 00:44:05,428 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 00:44:05,428 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 00:44:05,429 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 00:44:05,430 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 00:44:05,430 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 00:44:05,433 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 00:44:05,435 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 00:44:05,437 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 00:44:05,449 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 00:44:05,450 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 00:44:05,451 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 00:44:05,453 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-06-22 00:44:05,464 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 00:44:05,464 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 00:44:05,465 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 00:44:05,465 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 00:44:05,466 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 00:44:05,466 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 00:44:05,467 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 00:44:05,487 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 00:44:05,488 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 00:44:05,488 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 00:44:05,488 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 00:44:05,489 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 00:44:05,489 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 00:44:05,489 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 00:44:05,491 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 00:44:05,491 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 00:44:05,491 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 00:44:05,491 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 00:44:05,491 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 00:44:05,492 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 00:44:05,492 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 00:44:05,492 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 00:44:05,492 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 00:44:05,492 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 00:44:05,494 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 00:44:05,495 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 00:44:05,545 INFO ]: Repository-Root is: /tmp [2018-06-22 00:44:05,563 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 00:44:05,569 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 00:44:05,571 INFO ]: Initializing SmtParser... [2018-06-22 00:44:05,571 INFO ]: SmtParser initialized [2018-06-22 00:44:05,572 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/Consistency/graham-scan-full.32.smt2 [2018-06-22 00:44:05,573 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 00:44:05,660 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/graham-scan-full.32.smt2 unknown [2018-06-22 00:44:06,194 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/graham-scan-full.32.smt2 [2018-06-22 00:44:06,200 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 00:44:06,206 INFO ]: Walking toolchain with 4 elements. [2018-06-22 00:44:06,206 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 00:44:06,206 INFO ]: Initializing ChcToBoogie... [2018-06-22 00:44:06,206 INFO ]: ChcToBoogie initialized [2018-06-22 00:44:06,209 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:44:06" (1/1) ... [2018-06-22 00:44:06,312 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:44:06 Unit [2018-06-22 00:44:06,312 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 00:44:06,313 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 00:44:06,313 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 00:44:06,313 INFO ]: Boogie Preprocessor initialized [2018-06-22 00:44:06,333 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:44:06" (1/1) ... [2018-06-22 00:44:06,333 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:44:06" (1/1) ... [2018-06-22 00:44:06,352 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:44:06" (1/1) ... [2018-06-22 00:44:06,353 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:44:06" (1/1) ... [2018-06-22 00:44:06,375 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:44:06" (1/1) ... [2018-06-22 00:44:06,378 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:44:06" (1/1) ... [2018-06-22 00:44:06,382 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:44:06" (1/1) ... [2018-06-22 00:44:06,387 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 00:44:06,387 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 00:44:06,388 INFO ]: Initializing RCFGBuilder... [2018-06-22 00:44:06,388 INFO ]: RCFGBuilder initialized [2018-06-22 00:44:06,388 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:44:06" (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 00:44:06,403 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 00:44:06,403 INFO ]: Found specification of procedure gotoProc [2018-06-22 00:44:06,403 INFO ]: Found implementation of procedure gotoProc [2018-06-22 00:44:06,403 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 00:44:06,403 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 00:44:06,403 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 00:44:08,091 INFO ]: Using library mode [2018-06-22 00:44:08,091 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:44:08 BoogieIcfgContainer [2018-06-22 00:44:08,091 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 00:44:08,093 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 00:44:08,093 INFO ]: Initializing TraceAbstraction... [2018-06-22 00:44:08,096 INFO ]: TraceAbstraction initialized [2018-06-22 00:44:08,096 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:44:06" (1/3) ... [2018-06-22 00:44:08,097 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b86c950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 12:44:08, skipping insertion in model container [2018-06-22 00:44:08,097 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:44:06" (2/3) ... [2018-06-22 00:44:08,097 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b86c950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 12:44:08, skipping insertion in model container [2018-06-22 00:44:08,098 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:44:08" (3/3) ... [2018-06-22 00:44:08,099 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 00:44:08,108 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 00:44:08,121 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 00:44:08,164 INFO ]: Using default assertion order modulation [2018-06-22 00:44:08,165 INFO ]: Interprodecural is true [2018-06-22 00:44:08,165 INFO ]: Hoare is false [2018-06-22 00:44:08,165 INFO ]: Compute interpolants for FPandBP [2018-06-22 00:44:08,165 INFO ]: Backedges is TWOTRACK [2018-06-22 00:44:08,165 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 00:44:08,165 INFO ]: Difference is false [2018-06-22 00:44:08,165 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 00:44:08,165 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 00:44:08,183 INFO ]: Start isEmpty. Operand 145 states. [2018-06-22 00:44:08,215 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 00:44:08,216 INFO ]: Found error trace [2018-06-22 00:44:08,216 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:44:08,217 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:44:08,220 INFO ]: Analyzing trace with hash -497758260, now seen corresponding path program 1 times [2018-06-22 00:44:08,222 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:44:08,222 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:44:08,264 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:44:08,265 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:44:08,265 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:44:08,315 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:44:08,619 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:44:08,621 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:44:08,621 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 00:44:08,623 INFO ]: Interpolant automaton has 4 states [2018-06-22 00:44:08,638 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 00:44:08,639 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 00:44:08,642 INFO ]: Start difference. First operand 145 states. Second operand 4 states. [2018-06-22 00:44:12,243 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:44:12,243 INFO ]: Finished difference Result 283 states and 549 transitions. [2018-06-22 00:44:12,244 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 00:44:12,245 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 00:44:12,245 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:44:12,290 INFO ]: With dead ends: 283 [2018-06-22 00:44:12,290 INFO ]: Without dead ends: 281 [2018-06-22 00:44:12,292 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 00:44:12,312 INFO ]: Start minimizeSevpa. Operand 281 states. [2018-06-22 00:44:12,467 INFO ]: Finished minimizeSevpa. Reduced states from 281 to 281. [2018-06-22 00:44:12,469 INFO ]: Start removeUnreachable. Operand 281 states. [2018-06-22 00:44:12,523 INFO ]: Finished removeUnreachable. Reduced from 281 states to 281 states and 547 transitions. [2018-06-22 00:44:12,524 INFO ]: Start accepts. Automaton has 281 states and 547 transitions. Word has length 8 [2018-06-22 00:44:12,526 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:44:12,526 INFO ]: Abstraction has 281 states and 547 transitions. [2018-06-22 00:44:12,526 INFO ]: Interpolant automaton has 4 states. [2018-06-22 00:44:12,526 INFO ]: Start isEmpty. Operand 281 states and 547 transitions. [2018-06-22 00:44:12,539 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 00:44:12,539 INFO ]: Found error trace [2018-06-22 00:44:12,540 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:44:12,540 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:44:12,540 INFO ]: Analyzing trace with hash 1917791380, now seen corresponding path program 1 times [2018-06-22 00:44:12,540 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:44:12,540 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:44:12,541 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:44:12,541 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:44:12,541 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:44:12,562 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:44:12,719 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:44:12,719 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:44:12,719 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 00:44:12,720 INFO ]: Interpolant automaton has 4 states [2018-06-22 00:44:12,721 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 00:44:12,721 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 00:44:12,721 INFO ]: Start difference. First operand 281 states and 547 transitions. Second operand 4 states. [2018-06-22 00:44:14,685 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:44:14,685 INFO ]: Finished difference Result 420 states and 819 transitions. [2018-06-22 00:44:14,686 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 00:44:14,686 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 00:44:14,686 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:44:14,710 INFO ]: With dead ends: 420 [2018-06-22 00:44:14,710 INFO ]: Without dead ends: 420 [2018-06-22 00:44:14,711 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 00:44:14,711 INFO ]: Start minimizeSevpa. Operand 420 states. [2018-06-22 00:44:14,785 INFO ]: Finished minimizeSevpa. Reduced states from 420 to 420. [2018-06-22 00:44:14,785 INFO ]: Start removeUnreachable. Operand 420 states. [2018-06-22 00:44:14,804 INFO ]: Finished removeUnreachable. Reduced from 420 states to 420 states and 819 transitions. [2018-06-22 00:44:14,804 INFO ]: Start accepts. Automaton has 420 states and 819 transitions. Word has length 9 [2018-06-22 00:44:14,804 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:44:14,804 INFO ]: Abstraction has 420 states and 819 transitions. [2018-06-22 00:44:14,804 INFO ]: Interpolant automaton has 4 states. [2018-06-22 00:44:14,804 INFO ]: Start isEmpty. Operand 420 states and 819 transitions. [2018-06-22 00:44:14,827 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 00:44:14,827 INFO ]: Found error trace [2018-06-22 00:44:14,827 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:44:14,827 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:44:14,827 INFO ]: Analyzing trace with hash -1237630677, now seen corresponding path program 1 times [2018-06-22 00:44:14,827 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:44:14,827 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:44:14,828 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:44:14,828 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:44:14,828 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:44:14,878 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:44:15,055 INFO ]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 00:44:15,056 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:44:15,056 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-22 00:44:15,056 INFO ]: Interpolant automaton has 7 states [2018-06-22 00:44:15,056 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 00:44:15,056 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 00:44:15,056 INFO ]: Start difference. First operand 420 states and 819 transitions. Second operand 7 states. [2018-06-22 00:44:21,186 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:44:21,186 INFO ]: Finished difference Result 1188 states and 5804 transitions. [2018-06-22 00:44:21,186 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-06-22 00:44:21,186 INFO ]: Start accepts. Automaton has 7 states. Word has length 17 [2018-06-22 00:44:21,186 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:44:21,654 INFO ]: With dead ends: 1188 [2018-06-22 00:44:21,654 INFO ]: Without dead ends: 1177 [2018-06-22 00:44:21,655 INFO ]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2018-06-22 00:44:21,656 INFO ]: Start minimizeSevpa. Operand 1177 states. [2018-06-22 00:44:22,270 INFO ]: Finished minimizeSevpa. Reduced states from 1177 to 766. [2018-06-22 00:44:22,270 INFO ]: Start removeUnreachable. Operand 766 states. [2018-06-22 00:44:22,326 INFO ]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1913 transitions. [2018-06-22 00:44:22,326 INFO ]: Start accepts. Automaton has 766 states and 1913 transitions. Word has length 17 [2018-06-22 00:44:22,326 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:44:22,327 INFO ]: Abstraction has 766 states and 1913 transitions. [2018-06-22 00:44:22,327 INFO ]: Interpolant automaton has 7 states. [2018-06-22 00:44:22,327 INFO ]: Start isEmpty. Operand 766 states and 1913 transitions. [2018-06-22 00:44:22,360 INFO ]: Finished isEmpty. Found accepting run of length 19 [2018-06-22 00:44:22,360 INFO ]: Found error trace [2018-06-22 00:44:22,360 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:44:22,360 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:44:22,361 INFO ]: Analyzing trace with hash 2089432281, now seen corresponding path program 1 times [2018-06-22 00:44:22,361 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:44:22,361 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:44:22,362 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:44:22,363 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:44:22,363 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:44:22,416 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:44:22,883 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 00:44:22,884 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 00:44:22,884 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 00:44:22,897 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:44:22,963 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:44:22,972 INFO ]: Computing forward predicates... [2018-06-22 00:44:23,221 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 00:44:23,244 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 00:44:23,244 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-22 00:44:23,244 INFO ]: Interpolant automaton has 14 states [2018-06-22 00:44:23,244 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 00:44:23,244 INFO ]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-06-22 00:44:23,244 INFO ]: Start difference. First operand 766 states and 1913 transitions. Second operand 14 states. [2018-06-22 00:44:23,727 WARN ]: Spent 157.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2018-06-22 00:44:24,728 WARN ]: Spent 241.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 Received shutdown request... [2018-06-22 00:45:08,500 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-06-22 00:45:08,501 WARN ]: Verification canceled [2018-06-22 00:45:08,506 WARN ]: Timeout [2018-06-22 00:45:08,507 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 12:45:08 BoogieIcfgContainer [2018-06-22 00:45:08,507 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 00:45:08,508 INFO ]: Toolchain (without parser) took 62307.01 ms. Allocated memory was 304.1 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 242.4 MB in the beginning and 781.4 MB in the end (delta: -539.0 MB). Peak memory consumption was 545.7 MB. Max. memory is 3.6 GB. [2018-06-22 00:45:08,508 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 304.1 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 00:45:08,508 INFO ]: ChcToBoogie took 106.52 ms. Allocated memory is still 304.1 MB. Free memory was 242.4 MB in the beginning and 238.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-22 00:45:08,509 INFO ]: Boogie Preprocessor took 73.80 ms. Allocated memory is still 304.1 MB. Free memory was 238.4 MB in the beginning and 236.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 00:45:08,509 INFO ]: RCFGBuilder took 1703.91 ms. Allocated memory was 304.1 MB in the beginning and 321.9 MB in the end (delta: 17.8 MB). Free memory was 236.4 MB in the beginning and 273.9 MB in the end (delta: -37.5 MB). Peak memory consumption was 59.6 MB. Max. memory is 3.6 GB. [2018-06-22 00:45:08,510 INFO ]: TraceAbstraction took 60413.57 ms. Allocated memory was 321.9 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 273.9 MB in the beginning and 781.4 MB in the end (delta: -507.5 MB). Peak memory consumption was 559.4 MB. Max. memory is 3.6 GB. [2018-06-22 00:45:08,514 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 304.1 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 106.52 ms. Allocated memory is still 304.1 MB. Free memory was 242.4 MB in the beginning and 238.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 73.80 ms. Allocated memory is still 304.1 MB. Free memory was 238.4 MB in the beginning and 236.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 1703.91 ms. Allocated memory was 304.1 MB in the beginning and 321.9 MB in the end (delta: 17.8 MB). Free memory was 236.4 MB in the beginning and 273.9 MB in the end (delta: -37.5 MB). Peak memory consumption was 59.6 MB. Max. memory is 3.6 GB. * TraceAbstraction took 60413.57 ms. Allocated memory was 321.9 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 273.9 MB in the beginning and 781.4 MB in the end (delta: -507.5 MB). Peak memory consumption was 559.4 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was constructing difference of abstraction (766states) and interpolant automaton (currently 66 states, 14 states before enhancement), while ReachableStatesComputation was computing reachable states (5315 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 145 locations, 1 error locations. TIMEOUT Result, 60.3s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 57.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1798 SDtfs, 1640 SDslu, 3732 SDs, 0 SdLazy, 46233 SolverSat, 12606 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 46.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1733 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=766occurred 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: 0.9s AutomataMinimizationTime, 3 MinimizatonAttempts, 411 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 2325 SizeOfPredicates, 8 NumberOfNonLiveVariables, 464 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 12/14 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/graham-scan-full.32.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_00-45-08-525.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/graham-scan-full.32.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_00-45-08-525.csv Completed graceful shutdown