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.33.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 00:44:48,498 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 00:44:48,500 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 00:44:48,511 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 00:44:48,512 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 00:44:48,515 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 00:44:48,517 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 00:44:48,519 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 00:44:48,520 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 00:44:48,523 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 00:44:48,524 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 00:44:48,524 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 00:44:48,525 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 00:44:48,526 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 00:44:48,527 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 00:44:48,527 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 00:44:48,529 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 00:44:48,531 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 00:44:48,533 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 00:44:48,534 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 00:44:48,535 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 00:44:48,537 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-06-22 00:44:48,542 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 00:44:48,542 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 00:44:48,543 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 00:44:48,543 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 00:44:48,544 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 00:44:48,545 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 00:44:48,545 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 00:44:48,558 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 00:44:48,558 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 00:44:48,559 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 00:44:48,559 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 00:44:48,560 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 00:44:48,560 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 00:44:48,560 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 00:44:48,560 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 00:44:48,561 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 00:44:48,561 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 00:44:48,561 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 00:44:48,561 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 00:44:48,561 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 00:44:48,562 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 00:44:48,562 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 00:44:48,562 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 00:44:48,562 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 00:44:48,564 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 00:44:48,564 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 00:44:48,610 INFO ]: Repository-Root is: /tmp [2018-06-22 00:44:48,623 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 00:44:48,629 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 00:44:48,630 INFO ]: Initializing SmtParser... [2018-06-22 00:44:48,630 INFO ]: SmtParser initialized [2018-06-22 00:44:48,631 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/Consistency/graham-scan-full.33.smt2 [2018-06-22 00:44:48,632 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 00:44:48,719 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/graham-scan-full.33.smt2 unknown [2018-06-22 00:44:49,186 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/graham-scan-full.33.smt2 [2018-06-22 00:44:49,191 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 00:44:49,197 INFO ]: Walking toolchain with 4 elements. [2018-06-22 00:44:49,198 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 00:44:49,198 INFO ]: Initializing ChcToBoogie... [2018-06-22 00:44:49,198 INFO ]: ChcToBoogie initialized [2018-06-22 00:44:49,202 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:44:49" (1/1) ... [2018-06-22 00:44:49,309 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:44:49 Unit [2018-06-22 00:44:49,310 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 00:44:49,310 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 00:44:49,310 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 00:44:49,310 INFO ]: Boogie Preprocessor initialized [2018-06-22 00:44:49,331 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:44:49" (1/1) ... [2018-06-22 00:44:49,331 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:44:49" (1/1) ... [2018-06-22 00:44:49,345 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:44:49" (1/1) ... [2018-06-22 00:44:49,357 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:44:49" (1/1) ... [2018-06-22 00:44:49,383 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:44:49" (1/1) ... [2018-06-22 00:44:49,387 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:44:49" (1/1) ... [2018-06-22 00:44:49,390 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:44:49" (1/1) ... [2018-06-22 00:44:49,403 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 00:44:49,403 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 00:44:49,403 INFO ]: Initializing RCFGBuilder... [2018-06-22 00:44:49,404 INFO ]: RCFGBuilder initialized [2018-06-22 00:44:49,404 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:44:49" (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 00:44:49,438 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 00:44:49,438 INFO ]: Found specification of procedure gotoProc [2018-06-22 00:44:49,438 INFO ]: Found implementation of procedure gotoProc [2018-06-22 00:44:49,438 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 00:44:49,438 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 00:44:49,438 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 00:44:51,208 INFO ]: Using library mode [2018-06-22 00:44:51,209 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:44:51 BoogieIcfgContainer [2018-06-22 00:44:51,209 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 00:44:51,213 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 00:44:51,213 INFO ]: Initializing TraceAbstraction... [2018-06-22 00:44:51,219 INFO ]: TraceAbstraction initialized [2018-06-22 00:44:51,219 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:44:49" (1/3) ... [2018-06-22 00:44:51,220 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e57193e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 12:44:51, skipping insertion in model container [2018-06-22 00:44:51,220 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:44:49" (2/3) ... [2018-06-22 00:44:51,220 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e57193e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 12:44:51, skipping insertion in model container [2018-06-22 00:44:51,220 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:44:51" (3/3) ... [2018-06-22 00:44:51,222 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 00:44:51,232 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 00:44:51,242 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 00:44:51,293 INFO ]: Using default assertion order modulation [2018-06-22 00:44:51,294 INFO ]: Interprodecural is true [2018-06-22 00:44:51,294 INFO ]: Hoare is false [2018-06-22 00:44:51,294 INFO ]: Compute interpolants for FPandBP [2018-06-22 00:44:51,294 INFO ]: Backedges is TWOTRACK [2018-06-22 00:44:51,294 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 00:44:51,294 INFO ]: Difference is false [2018-06-22 00:44:51,294 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 00:44:51,294 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 00:44:51,325 INFO ]: Start isEmpty. Operand 145 states. [2018-06-22 00:44:51,349 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 00:44:51,349 INFO ]: Found error trace [2018-06-22 00:44:51,350 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:44:51,350 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:44:51,359 INFO ]: Analyzing trace with hash -497907215, now seen corresponding path program 1 times [2018-06-22 00:44:51,361 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:44:51,362 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:44:51,412 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:44:51,412 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:44:51,412 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:44:51,467 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:44:51,761 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:44:51,763 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:44:51,763 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 00:44:51,765 INFO ]: Interpolant automaton has 4 states [2018-06-22 00:44:51,781 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 00:44:51,781 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 00:44:51,785 INFO ]: Start difference. First operand 145 states. Second operand 4 states. [2018-06-22 00:44:55,369 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:44:55,370 INFO ]: Finished difference Result 283 states and 547 transitions. [2018-06-22 00:44:55,370 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 00:44:55,371 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 00:44:55,371 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:44:55,411 INFO ]: With dead ends: 283 [2018-06-22 00:44:55,411 INFO ]: Without dead ends: 269 [2018-06-22 00:44:55,413 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 00:44:55,431 INFO ]: Start minimizeSevpa. Operand 269 states. [2018-06-22 00:44:55,546 INFO ]: Finished minimizeSevpa. Reduced states from 269 to 269. [2018-06-22 00:44:55,547 INFO ]: Start removeUnreachable. Operand 269 states. [2018-06-22 00:44:55,571 INFO ]: Finished removeUnreachable. Reduced from 269 states to 269 states and 523 transitions. [2018-06-22 00:44:55,572 INFO ]: Start accepts. Automaton has 269 states and 523 transitions. Word has length 8 [2018-06-22 00:44:55,573 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:44:55,574 INFO ]: Abstraction has 269 states and 523 transitions. [2018-06-22 00:44:55,574 INFO ]: Interpolant automaton has 4 states. [2018-06-22 00:44:55,574 INFO ]: Start isEmpty. Operand 269 states and 523 transitions. [2018-06-22 00:44:55,578 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 00:44:55,578 INFO ]: Found error trace [2018-06-22 00:44:55,578 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:44:55,578 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:44:55,578 INFO ]: Analyzing trace with hash -630387792, now seen corresponding path program 1 times [2018-06-22 00:44:55,579 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:44:55,579 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:44:55,579 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:44:55,579 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:44:55,579 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:44:55,599 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:44:55,778 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:44:55,778 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:44:55,779 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 00:44:55,780 INFO ]: Interpolant automaton has 4 states [2018-06-22 00:44:55,780 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 00:44:55,780 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 00:44:55,781 INFO ]: Start difference. First operand 269 states and 523 transitions. Second operand 4 states. [2018-06-22 00:44:57,685 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:44:57,686 INFO ]: Finished difference Result 402 states and 783 transitions. [2018-06-22 00:44:57,686 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 00:44:57,686 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 00:44:57,686 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:44:57,709 INFO ]: With dead ends: 402 [2018-06-22 00:44:57,709 INFO ]: Without dead ends: 402 [2018-06-22 00:44:57,710 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 00:44:57,711 INFO ]: Start minimizeSevpa. Operand 402 states. [2018-06-22 00:44:57,816 INFO ]: Finished minimizeSevpa. Reduced states from 402 to 402. [2018-06-22 00:44:57,816 INFO ]: Start removeUnreachable. Operand 402 states. [2018-06-22 00:44:57,832 INFO ]: Finished removeUnreachable. Reduced from 402 states to 402 states and 783 transitions. [2018-06-22 00:44:57,832 INFO ]: Start accepts. Automaton has 402 states and 783 transitions. Word has length 8 [2018-06-22 00:44:57,832 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:44:57,832 INFO ]: Abstraction has 402 states and 783 transitions. [2018-06-22 00:44:57,832 INFO ]: Interpolant automaton has 4 states. [2018-06-22 00:44:57,832 INFO ]: Start isEmpty. Operand 402 states and 783 transitions. [2018-06-22 00:44:57,857 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 00:44:57,857 INFO ]: Found error trace [2018-06-22 00:44:57,857 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:44:57,857 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:44:57,858 INFO ]: Analyzing trace with hash -569844750, now seen corresponding path program 1 times [2018-06-22 00:44:57,858 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:44:57,858 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:44:57,858 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:44:57,858 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:44:57,858 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:44:57,909 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:44:58,457 INFO ]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 00:44:58,457 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:44:58,457 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-22 00:44:58,457 INFO ]: Interpolant automaton has 7 states [2018-06-22 00:44:58,457 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 00:44:58,457 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 00:44:58,457 INFO ]: Start difference. First operand 402 states and 783 transitions. Second operand 7 states. [2018-06-22 00:45:07,469 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:45:07,469 INFO ]: Finished difference Result 1499 states and 8310 transitions. [2018-06-22 00:45:07,469 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 00:45:07,469 INFO ]: Start accepts. Automaton has 7 states. Word has length 17 [2018-06-22 00:45:07,469 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:45:07,935 INFO ]: With dead ends: 1499 [2018-06-22 00:45:07,936 INFO ]: Without dead ends: 1499 [2018-06-22 00:45:07,936 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-06-22 00:45:07,937 INFO ]: Start minimizeSevpa. Operand 1499 states. [2018-06-22 00:45:08,840 INFO ]: Finished minimizeSevpa. Reduced states from 1499 to 951. [2018-06-22 00:45:08,840 INFO ]: Start removeUnreachable. Operand 951 states. [2018-06-22 00:45:08,913 INFO ]: Finished removeUnreachable. Reduced from 951 states to 951 states and 2373 transitions. [2018-06-22 00:45:08,913 INFO ]: Start accepts. Automaton has 951 states and 2373 transitions. Word has length 17 [2018-06-22 00:45:08,913 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:45:08,913 INFO ]: Abstraction has 951 states and 2373 transitions. [2018-06-22 00:45:08,913 INFO ]: Interpolant automaton has 7 states. [2018-06-22 00:45:08,913 INFO ]: Start isEmpty. Operand 951 states and 2373 transitions. [2018-06-22 00:45:08,944 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 00:45:08,944 INFO ]: Found error trace [2018-06-22 00:45:08,944 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:45:08,944 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:45:08,944 INFO ]: Analyzing trace with hash 800614336, now seen corresponding path program 1 times [2018-06-22 00:45:08,945 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:45:08,945 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:45:08,945 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:45:08,945 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:45:08,945 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:45:08,985 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:45:09,146 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 00:45:09,146 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 00:45:09,146 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 00:45:09,156 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:45:09,216 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:45:09,225 INFO ]: Computing forward predicates... [2018-06-22 00:45:09,334 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 00:45:09,368 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 00:45:09,368 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-06-22 00:45:09,369 INFO ]: Interpolant automaton has 9 states [2018-06-22 00:45:09,369 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 00:45:09,369 INFO ]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-06-22 00:45:09,369 INFO ]: Start difference. First operand 951 states and 2373 transitions. Second operand 9 states. [2018-06-22 00:45:22,637 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:45:22,637 INFO ]: Finished difference Result 3310 states and 22167 transitions. [2018-06-22 00:45:22,656 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 00:45:22,656 INFO ]: Start accepts. Automaton has 9 states. Word has length 17 [2018-06-22 00:45:22,656 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:45:23,742 INFO ]: With dead ends: 3310 [2018-06-22 00:45:23,742 INFO ]: Without dead ends: 3310 [2018-06-22 00:45:23,742 INFO ]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2018-06-22 00:45:23,745 INFO ]: Start minimizeSevpa. Operand 3310 states. [2018-06-22 00:45:26,641 INFO ]: Finished minimizeSevpa. Reduced states from 3310 to 2142. [2018-06-22 00:45:26,641 INFO ]: Start removeUnreachable. Operand 2142 states. [2018-06-22 00:45:26,864 INFO ]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 7082 transitions. [2018-06-22 00:45:26,865 INFO ]: Start accepts. Automaton has 2142 states and 7082 transitions. Word has length 17 [2018-06-22 00:45:26,865 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:45:26,865 INFO ]: Abstraction has 2142 states and 7082 transitions. [2018-06-22 00:45:26,865 INFO ]: Interpolant automaton has 9 states. [2018-06-22 00:45:26,865 INFO ]: Start isEmpty. Operand 2142 states and 7082 transitions. [2018-06-22 00:45:26,928 INFO ]: Finished isEmpty. Found accepting run of length 19 [2018-06-22 00:45:26,929 INFO ]: Found error trace [2018-06-22 00:45:26,929 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:45:26,929 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:45:26,930 INFO ]: Analyzing trace with hash -788019100, now seen corresponding path program 1 times [2018-06-22 00:45:26,930 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:45:26,930 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:45:26,931 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:45:26,931 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:45:26,931 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:45:26,973 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:45:27,129 INFO ]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 00:45:27,129 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:45:27,129 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-22 00:45:27,129 INFO ]: Interpolant automaton has 7 states [2018-06-22 00:45:27,129 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 00:45:27,129 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 00:45:27,130 INFO ]: Start difference. First operand 2142 states and 7082 transitions. Second operand 7 states. Received shutdown request... [2018-06-22 00:45:47,583 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-06-22 00:45:47,583 WARN ]: Verification canceled [2018-06-22 00:45:47,589 WARN ]: Timeout [2018-06-22 00:45:47,589 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 12:45:47 BoogieIcfgContainer [2018-06-22 00:45:47,589 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 00:45:47,590 INFO ]: Toolchain (without parser) took 58398.21 ms. Allocated memory was 304.6 MB in the beginning and 1.8 GB in the end (delta: 1.5 GB). Free memory was 245.2 MB in the beginning and 1.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.5 GB. Max. memory is 3.6 GB. [2018-06-22 00:45:47,591 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 304.6 MB. Free memory is still 270.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 00:45:47,592 INFO ]: ChcToBoogie took 112.15 ms. Allocated memory is still 304.6 MB. Free memory was 245.2 MB in the beginning and 241.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-22 00:45:47,592 INFO ]: Boogie Preprocessor took 92.67 ms. Allocated memory is still 304.6 MB. Free memory was 241.2 MB in the beginning and 238.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 00:45:47,593 INFO ]: RCFGBuilder took 1805.33 ms. Allocated memory was 304.6 MB in the beginning and 323.5 MB in the end (delta: 18.9 MB). Free memory was 238.2 MB in the beginning and 281.5 MB in the end (delta: -43.3 MB). Peak memory consumption was 60.8 MB. Max. memory is 3.6 GB. [2018-06-22 00:45:47,593 INFO ]: TraceAbstraction took 56376.44 ms. Allocated memory was 323.5 MB in the beginning and 1.8 GB in the end (delta: 1.5 GB). Free memory was 281.5 MB in the beginning and 1.3 GB in the end (delta: -974.6 MB). Peak memory consumption was 1.6 GB. Max. memory is 3.6 GB. [2018-06-22 00:45:47,597 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 304.6 MB. Free memory is still 270.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 112.15 ms. Allocated memory is still 304.6 MB. Free memory was 245.2 MB in the beginning and 241.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 92.67 ms. Allocated memory is still 304.6 MB. Free memory was 241.2 MB in the beginning and 238.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 1805.33 ms. Allocated memory was 304.6 MB in the beginning and 323.5 MB in the end (delta: 18.9 MB). Free memory was 238.2 MB in the beginning and 281.5 MB in the end (delta: -43.3 MB). Peak memory consumption was 60.8 MB. Max. memory is 3.6 GB. * TraceAbstraction took 56376.44 ms. Allocated memory was 323.5 MB in the beginning and 1.8 GB in the end (delta: 1.5 GB). Free memory was 281.5 MB in the beginning and 1.3 GB in the end (delta: -974.6 MB). Peak memory consumption was 1.6 GB. 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 (2142states) and interpolant automaton (currently 17 states, 7 states before enhancement), while ReachableStatesComputation was computing reachable states (7530 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 145 locations, 1 error locations. TIMEOUT Result, 56.3s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 49.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4822 SDtfs, 1152 SDslu, 10674 SDs, 0 SdLazy, 27076 SolverSat, 4978 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 35.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2142occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 1716 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 2911 SizeOfPredicates, 6 NumberOfNonLiveVariables, 420 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 17/19 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.33.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_00-45-47-607.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/graham-scan-full.33.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_00-45-47-607.csv Completed graceful shutdown