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_No_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/ctigar/dillig19.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 14:57:11,530 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 14:57:11,532 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 14:57:11,548 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 14:57:11,549 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 14:57:11,550 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 14:57:11,551 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 14:57:11,553 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 14:57:11,554 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 14:57:11,555 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 14:57:11,558 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 14:57:11,558 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 14:57:11,559 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 14:57:11,560 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 14:57:11,560 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 14:57:11,563 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 14:57:11,565 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 14:57:11,577 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 14:57:11,579 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 14:57:11,580 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 14:57:11,581 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 14:57:11,583 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 14:57:11,583 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 14:57:11,583 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 14:57:11,584 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 14:57:11,585 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 14:57:11,586 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 14:57:11,589 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 14:57:11,590 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 14:57:11,590 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 14:57:11,591 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 14:57:11,592 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 14:57:11,592 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 14:57:11,593 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 14:57:11,593 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 14:57:11,593 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 14:57:11,609 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 14:57:11,609 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 14:57:11,610 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 14:57:11,610 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 14:57:11,611 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 14:57:11,612 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 14:57:11,612 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 14:57:11,612 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 14:57:11,612 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 14:57:11,612 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 14:57:11,613 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 14:57:11,613 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 14:57:11,613 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 14:57:11,613 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 14:57:11,613 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 14:57:11,613 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 14:57:11,615 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 14:57:11,615 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 14:57:11,615 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 14:57:11,616 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 14:57:11,616 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 14:57:11,662 INFO ]: Repository-Root is: /tmp [2018-06-22 14:57:11,676 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 14:57:11,682 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 14:57:11,683 INFO ]: Initializing SmtParser... [2018-06-22 14:57:11,684 INFO ]: SmtParser initialized [2018-06-22 14:57:11,685 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/dillig19.c.smt2 [2018-06-22 14:57:11,686 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 14:57:11,777 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/dillig19.c.smt2 unknown [2018-06-22 14:57:12,065 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/dillig19.c.smt2 [2018-06-22 14:57:12,071 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 14:57:12,077 INFO ]: Walking toolchain with 4 elements. [2018-06-22 14:57:12,078 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 14:57:12,078 INFO ]: Initializing ChcToBoogie... [2018-06-22 14:57:12,078 INFO ]: ChcToBoogie initialized [2018-06-22 14:57:12,081 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:57:12" (1/1) ... [2018-06-22 14:57:12,128 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:57:12 Unit [2018-06-22 14:57:12,130 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 14:57:12,131 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 14:57:12,131 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 14:57:12,131 INFO ]: Boogie Preprocessor initialized [2018-06-22 14:57:12,152 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:57:12" (1/1) ... [2018-06-22 14:57:12,152 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:57:12" (1/1) ... [2018-06-22 14:57:12,161 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:57:12" (1/1) ... [2018-06-22 14:57:12,161 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:57:12" (1/1) ... [2018-06-22 14:57:12,172 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:57:12" (1/1) ... [2018-06-22 14:57:12,173 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:57:12" (1/1) ... [2018-06-22 14:57:12,175 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:57:12" (1/1) ... [2018-06-22 14:57:12,185 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 14:57:12,186 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 14:57:12,186 INFO ]: Initializing RCFGBuilder... [2018-06-22 14:57:12,186 INFO ]: RCFGBuilder initialized [2018-06-22 14:57:12,187 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:57:12" (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 14:57:12,207 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 14:57:12,207 INFO ]: Found specification of procedure False [2018-06-22 14:57:12,207 INFO ]: Found implementation of procedure False [2018-06-22 14:57:12,207 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 14:57:12,207 INFO ]: Found specification of procedure state [2018-06-22 14:57:12,207 INFO ]: Found implementation of procedure state [2018-06-22 14:57:12,207 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 14:57:12,207 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 14:57:12,207 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 14:57:12,453 INFO ]: Using library mode [2018-06-22 14:57:12,453 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:57:12 BoogieIcfgContainer [2018-06-22 14:57:12,453 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 14:57:12,455 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 14:57:12,455 INFO ]: Initializing TraceAbstraction... [2018-06-22 14:57:12,462 INFO ]: TraceAbstraction initialized [2018-06-22 14:57:12,462 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:57:12" (1/3) ... [2018-06-22 14:57:12,463 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa7a515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 02:57:12, skipping insertion in model container [2018-06-22 14:57:12,463 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:57:12" (2/3) ... [2018-06-22 14:57:12,463 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa7a515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 02:57:12, skipping insertion in model container [2018-06-22 14:57:12,463 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:57:12" (3/3) ... [2018-06-22 14:57:12,468 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 14:57:12,478 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 14:57:12,489 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 14:57:12,538 INFO ]: Using default assertion order modulation [2018-06-22 14:57:12,538 INFO ]: Interprodecural is true [2018-06-22 14:57:12,539 INFO ]: Hoare is false [2018-06-22 14:57:12,539 INFO ]: Compute interpolants for FPandBP [2018-06-22 14:57:12,539 INFO ]: Backedges is TWOTRACK [2018-06-22 14:57:12,539 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 14:57:12,539 INFO ]: Difference is false [2018-06-22 14:57:12,539 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 14:57:12,539 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 14:57:12,551 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 14:57:12,562 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 14:57:12,562 INFO ]: Found error trace [2018-06-22 14:57:12,563 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:57:12,563 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:57:12,568 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 14:57:12,570 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:57:12,571 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:57:12,610 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:57:12,610 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:57:12,610 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:57:12,638 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:57:12,715 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 14:57:12,722 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 14:57:12,722 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 14:57:12,724 INFO ]: Interpolant automaton has 4 states [2018-06-22 14:57:12,756 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 14:57:12,757 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 14:57:12,759 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 14:57:12,852 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:57:12,852 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 14:57:12,852 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 14:57:12,854 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 14:57:12,854 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:57:12,862 INFO ]: With dead ends: 13 [2018-06-22 14:57:12,862 INFO ]: Without dead ends: 13 [2018-06-22 14:57:12,864 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 14:57:12,877 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 14:57:12,898 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 14:57:12,899 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 14:57:12,899 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 14:57:12,901 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 14:57:12,901 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:57:12,901 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 14:57:12,901 INFO ]: Interpolant automaton has 4 states. [2018-06-22 14:57:12,901 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 14:57:12,902 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 14:57:12,902 INFO ]: Found error trace [2018-06-22 14:57:12,902 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:57:12,902 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:57:12,903 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 14:57:12,903 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:57:12,903 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:57:12,905 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:57:12,905 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:57:12,905 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:57:12,953 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:57:13,202 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:57:13,202 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:57:13,202 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 14:57:13,212 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:57:13,244 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:57:13,251 INFO ]: Computing forward predicates... [2018-06-22 14:57:13,683 WARN ]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 14:57:13,994 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:57:14,015 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:57:14,015 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 14:57:14,016 INFO ]: Interpolant automaton has 9 states [2018-06-22 14:57:14,016 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 14:57:14,016 INFO ]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-06-22 14:57:14,016 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 14:57:14,640 WARN ]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-22 14:57:14,733 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:57:14,733 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 14:57:14,734 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 14:57:14,735 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 14:57:14,735 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:57:14,735 INFO ]: With dead ends: 15 [2018-06-22 14:57:14,735 INFO ]: Without dead ends: 15 [2018-06-22 14:57:14,736 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-06-22 14:57:14,736 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 14:57:14,741 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 14:57:14,741 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 14:57:14,741 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 14:57:14,742 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 14:57:14,742 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:57:14,742 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 14:57:14,742 INFO ]: Interpolant automaton has 9 states. [2018-06-22 14:57:14,742 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 14:57:14,742 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 14:57:14,742 INFO ]: Found error trace [2018-06-22 14:57:14,742 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:57:14,742 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:57:14,743 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 14:57:14,743 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:57:14,743 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:57:14,744 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:57:14,744 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:57:14,744 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:57:14,823 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:57:15,225 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 14:57:15,225 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:57:15,225 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:57:15,238 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 14:57:15,284 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 14:57:15,284 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:57:15,290 INFO ]: Computing forward predicates... [2018-06-22 14:57:15,695 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 14:57:15,725 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:57:15,725 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2018-06-22 14:57:15,725 INFO ]: Interpolant automaton has 11 states [2018-06-22 14:57:15,725 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 14:57:15,726 INFO ]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-06-22 14:57:15,726 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 11 states. [2018-06-22 14:57:16,021 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:57:16,021 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 14:57:16,021 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 14:57:16,022 INFO ]: Start accepts. Automaton has 11 states. Word has length 17 [2018-06-22 14:57:16,022 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:57:16,022 INFO ]: With dead ends: 17 [2018-06-22 14:57:16,022 INFO ]: Without dead ends: 17 [2018-06-22 14:57:16,023 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-06-22 14:57:16,023 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 14:57:16,026 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 14:57:16,026 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 14:57:16,028 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 14:57:16,028 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 14:57:16,028 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:57:16,028 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 14:57:16,028 INFO ]: Interpolant automaton has 11 states. [2018-06-22 14:57:16,028 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 14:57:16,029 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 14:57:16,029 INFO ]: Found error trace [2018-06-22 14:57:16,029 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:57:16,029 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:57:16,029 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 14:57:16,029 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:57:16,029 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:57:16,030 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:57:16,030 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:57:16,030 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:57:16,063 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:57:16,314 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:57:16,314 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:57:16,314 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:57:16,329 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 14:57:16,400 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 14:57:16,400 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:57:16,404 INFO ]: Computing forward predicates... [2018-06-22 14:57:16,749 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:57:16,771 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:57:16,771 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-06-22 14:57:16,771 INFO ]: Interpolant automaton has 11 states [2018-06-22 14:57:16,771 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 14:57:16,771 INFO ]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-06-22 14:57:16,771 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 11 states. [2018-06-22 14:57:17,081 WARN ]: Spent 106.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 12 [2018-06-22 14:57:17,132 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:57:17,132 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 14:57:17,132 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 14:57:17,132 INFO ]: Start accepts. Automaton has 11 states. Word has length 21 [2018-06-22 14:57:17,132 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:57:17,133 INFO ]: With dead ends: 19 [2018-06-22 14:57:17,133 INFO ]: Without dead ends: 19 [2018-06-22 14:57:17,133 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2018-06-22 14:57:17,133 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 14:57:17,136 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 14:57:17,136 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 14:57:17,137 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 14:57:17,137 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 14:57:17,137 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:57:17,137 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 14:57:17,137 INFO ]: Interpolant automaton has 11 states. [2018-06-22 14:57:17,137 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 14:57:17,138 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 14:57:17,138 INFO ]: Found error trace [2018-06-22 14:57:17,138 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:57:17,138 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:57:17,138 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-22 14:57:17,138 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:57:17,138 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:57:17,139 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:57:17,139 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:57:17,139 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:57:17,169 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:57:17,461 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 14:57:17,461 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:57:17,461 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:57:17,470 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 14:57:17,505 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 14:57:17,505 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:57:17,509 INFO ]: Computing forward predicates... [2018-06-22 14:57:17,908 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 14:57:17,928 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:57:17,928 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 15 [2018-06-22 14:57:17,928 INFO ]: Interpolant automaton has 15 states [2018-06-22 14:57:17,928 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 14:57:17,928 INFO ]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-06-22 14:57:17,929 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 15 states. [2018-06-22 14:57:18,097 WARN ]: Spent 140.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2018-06-22 14:57:18,516 WARN ]: Spent 187.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2018-06-22 14:57:18,555 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:57:18,555 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 14:57:18,560 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 14:57:18,560 INFO ]: Start accepts. Automaton has 15 states. Word has length 25 [2018-06-22 14:57:18,560 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:57:18,561 INFO ]: With dead ends: 21 [2018-06-22 14:57:18,561 INFO ]: Without dead ends: 21 [2018-06-22 14:57:18,561 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2018-06-22 14:57:18,561 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 14:57:18,564 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 14:57:18,564 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 14:57:18,565 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 14:57:18,565 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-22 14:57:18,565 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:57:18,565 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 14:57:18,565 INFO ]: Interpolant automaton has 15 states. [2018-06-22 14:57:18,565 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 14:57:18,566 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 14:57:18,566 INFO ]: Found error trace [2018-06-22 14:57:18,566 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:57:18,566 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:57:18,566 INFO ]: Analyzing trace with hash 853117551, now seen corresponding path program 5 times [2018-06-22 14:57:18,567 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:57:18,567 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:57:18,567 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:57:18,567 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:57:18,567 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:57:18,604 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:57:19,182 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 14:57:19,182 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:57:19,182 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:57:19,188 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 14:57:19,235 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-22 14:57:19,235 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:57:19,240 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-22 14:58:16,966 WARN ]: Removed 2 from assertion stack [2018-06-22 14:58:16,966 INFO ]: Timeout while computing interpolants [2018-06-22 14:58:17,167 WARN ]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:58:17,167 WARN ]: Verification canceled [2018-06-22 14:58:17,171 WARN ]: Timeout [2018-06-22 14:58:17,172 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 02:58:17 BoogieIcfgContainer [2018-06-22 14:58:17,172 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 14:58:17,173 INFO ]: Toolchain (without parser) took 65101.12 ms. Allocated memory was 302.5 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 255.1 MB in the beginning and 423.5 MB in the end (delta: -168.5 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 14:58:17,175 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 302.5 MB. Free memory is still 268.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 14:58:17,176 INFO ]: ChcToBoogie took 52.81 ms. Allocated memory is still 302.5 MB. Free memory was 254.1 MB in the beginning and 252.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:58:17,176 INFO ]: Boogie Preprocessor took 54.38 ms. Allocated memory is still 302.5 MB. Free memory was 252.1 MB in the beginning and 251.1 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 3.6 GB. [2018-06-22 14:58:17,177 INFO ]: RCFGBuilder took 267.49 ms. Allocated memory is still 302.5 MB. Free memory was 251.1 MB in the beginning and 241.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:58:17,177 INFO ]: TraceAbstraction took 64716.89 ms. Allocated memory was 302.5 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 241.1 MB in the beginning and 423.5 MB in the end (delta: -182.5 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 14:58:17,187 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 302.5 MB. Free memory is still 268.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 52.81 ms. Allocated memory is still 302.5 MB. Free memory was 254.1 MB in the beginning and 252.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 54.38 ms. Allocated memory is still 302.5 MB. Free memory was 252.1 MB in the beginning and 251.1 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 3.6 GB. * RCFGBuilder took 267.49 ms. Allocated memory is still 302.5 MB. Free memory was 251.1 MB in the beginning and 241.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 64716.89 ms. Allocated memory was 302.5 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 241.1 MB in the beginning and 423.5 MB in the end (delta: -182.5 MB). Peak memory consumption was 1.3 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 analyzing trace of length 30 with TraceHistMax 6, while TraceCheckSpWp was constructing forward predicates, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 23116. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 64.6s OverallTime, 6 OverallIterations, 6 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 58 SDtfs, 64 SDslu, 206 SDs, 0 SdLazy, 162 SolverSat, 86 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=5, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 16512 SizeOfPredicates, 143 NumberOfNonLiveVariables, 630 ConjunctsInSsa, 98 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 40/140 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/dillig19.c.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_14-58-17-204.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dillig19.c.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_14-58-17-204.csv Completed graceful shutdown