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/vmt-chc-benchmarks/lustre/_6counters.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 06:11:34,555 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 06:11:34,557 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 06:11:34,572 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 06:11:34,572 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 06:11:34,573 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 06:11:34,578 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 06:11:34,580 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 06:11:34,583 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 06:11:34,584 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 06:11:34,585 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 06:11:34,585 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 06:11:34,587 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 06:11:34,589 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 06:11:34,589 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 06:11:34,590 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 06:11:34,603 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 06:11:34,605 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 06:11:34,607 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 06:11:34,611 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 06:11:34,612 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 06:11:34,615 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 06:11:34,615 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 06:11:34,615 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 06:11:34,616 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 06:11:34,617 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 06:11:34,618 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 06:11:34,618 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 06:11:34,619 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 06:11:34,620 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 06:11:34,620 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 06:11:34,621 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 06:11:34,621 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 06:11:34,622 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 06:11:34,622 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 06:11:34,623 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 06:11:34,639 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 06:11:34,640 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 06:11:34,640 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 06:11:34,640 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 06:11:34,641 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 06:11:34,642 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 06:11:34,642 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 06:11:34,642 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 06:11:34,642 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 06:11:34,642 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 06:11:34,643 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 06:11:34,643 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 06:11:34,643 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 06:11:34,643 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 06:11:34,643 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 06:11:34,643 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 06:11:34,644 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 06:11:34,645 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 06:11:34,645 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 06:11:34,693 INFO ]: Repository-Root is: /tmp [2018-06-22 06:11:34,710 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 06:11:34,719 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 06:11:34,721 INFO ]: Initializing SmtParser... [2018-06-22 06:11:34,721 INFO ]: SmtParser initialized [2018-06-22 06:11:34,721 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/_6counters.smt2 [2018-06-22 06:11:34,724 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 06:11:34,819 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/_6counters.smt2 unknown [2018-06-22 06:11:35,109 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/_6counters.smt2 [2018-06-22 06:11:35,115 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 06:11:35,121 INFO ]: Walking toolchain with 4 elements. [2018-06-22 06:11:35,121 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 06:11:35,121 INFO ]: Initializing ChcToBoogie... [2018-06-22 06:11:35,122 INFO ]: ChcToBoogie initialized [2018-06-22 06:11:35,127 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 06:11:35" (1/1) ... [2018-06-22 06:11:35,197 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:11:35 Unit [2018-06-22 06:11:35,197 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 06:11:35,197 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 06:11:35,197 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 06:11:35,197 INFO ]: Boogie Preprocessor initialized [2018-06-22 06:11:35,219 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:11:35" (1/1) ... [2018-06-22 06:11:35,219 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:11:35" (1/1) ... [2018-06-22 06:11:35,225 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:11:35" (1/1) ... [2018-06-22 06:11:35,225 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:11:35" (1/1) ... [2018-06-22 06:11:35,228 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:11:35" (1/1) ... [2018-06-22 06:11:35,229 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:11:35" (1/1) ... [2018-06-22 06:11:35,230 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:11:35" (1/1) ... [2018-06-22 06:11:35,232 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 06:11:35,237 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 06:11:35,237 INFO ]: Initializing RCFGBuilder... [2018-06-22 06:11:35,237 INFO ]: RCFGBuilder initialized [2018-06-22 06:11:35,238 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:11:35" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 06:11:35,247 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 06:11:35,247 INFO ]: Found specification of procedure gotoProc [2018-06-22 06:11:35,247 INFO ]: Found implementation of procedure gotoProc [2018-06-22 06:11:35,247 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 06:11:35,247 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 06:11:35,247 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 06:11:35,495 INFO ]: Using library mode [2018-06-22 06:11:35,496 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:11:35 BoogieIcfgContainer [2018-06-22 06:11:35,496 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 06:11:35,497 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 06:11:35,497 INFO ]: Initializing TraceAbstraction... [2018-06-22 06:11:35,500 INFO ]: TraceAbstraction initialized [2018-06-22 06:11:35,501 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 06:11:35" (1/3) ... [2018-06-22 06:11:35,502 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f616abe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 06:11:35, skipping insertion in model container [2018-06-22 06:11:35,502 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:11:35" (2/3) ... [2018-06-22 06:11:35,502 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f616abe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 06:11:35, skipping insertion in model container [2018-06-22 06:11:35,502 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:11:35" (3/3) ... [2018-06-22 06:11:35,504 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 06:11:35,513 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 06:11:35,523 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 06:11:35,560 INFO ]: Using default assertion order modulation [2018-06-22 06:11:35,561 INFO ]: Interprodecural is true [2018-06-22 06:11:35,561 INFO ]: Hoare is false [2018-06-22 06:11:35,561 INFO ]: Compute interpolants for FPandBP [2018-06-22 06:11:35,561 INFO ]: Backedges is TWOTRACK [2018-06-22 06:11:35,561 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 06:11:35,561 INFO ]: Difference is false [2018-06-22 06:11:35,561 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 06:11:35,561 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 06:11:35,575 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 06:11:35,592 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 06:11:35,592 INFO ]: Found error trace [2018-06-22 06:11:35,593 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 06:11:35,593 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 06:11:35,601 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 06:11:35,603 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 06:11:35,603 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 06:11:35,637 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:11:35,637 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 06:11:35,637 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:11:35,683 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:11:35,807 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:11:35,809 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 06:11:35,809 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 06:11:35,811 INFO ]: Interpolant automaton has 3 states [2018-06-22 06:11:35,821 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 06:11:35,822 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 06:11:35,824 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 06:11:35,866 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 06:11:35,866 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 06:11:35,867 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 06:11:35,868 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 06:11:35,868 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 06:11:35,875 INFO ]: With dead ends: 9 [2018-06-22 06:11:35,875 INFO ]: Without dead ends: 9 [2018-06-22 06:11:35,877 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 06:11:35,889 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 06:11:35,904 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 06:11:35,905 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 06:11:35,906 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 06:11:35,911 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 06:11:35,911 INFO ]: Finished accepts. word is rejected. [2018-06-22 06:11:35,911 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 06:11:35,911 INFO ]: Interpolant automaton has 3 states. [2018-06-22 06:11:35,911 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 06:11:35,911 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 06:11:35,911 INFO ]: Found error trace [2018-06-22 06:11:35,911 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 06:11:35,911 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 06:11:35,912 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 06:11:35,912 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 06:11:35,912 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 06:11:35,913 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:11:35,913 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 06:11:35,913 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:11:35,954 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:11:36,155 WARN ]: Spent 126.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 9 [2018-06-22 06:11:36,211 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:11:36,211 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 06:11:36,211 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 06:11:36,218 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 06:11:36,282 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:11:36,290 INFO ]: Computing forward predicates... [2018-06-22 06:11:36,474 WARN ]: expecting exponential blowup for input size 14 [2018-06-22 06:11:36,988 WARN ]: Simplifying disjunction of 23040 conjuctions. This might take some time... [2018-06-22 06:12:42,968 INFO ]: Simplified to disjunction of 23040 conjuctions. [2018-06-22 06:12:45,172 WARN ]: Spent 183.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 6 [2018-06-22 06:12:45,195 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:12:45,227 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 06:12:45,228 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-22 06:12:45,228 INFO ]: Interpolant automaton has 6 states [2018-06-22 06:12:45,228 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 06:12:45,228 INFO ]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-06-22 06:12:45,228 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-22 06:12:45,524 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 06:12:45,524 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 06:12:45,525 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 06:12:45,525 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-22 06:12:45,525 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 06:12:45,525 INFO ]: With dead ends: 10 [2018-06-22 06:12:45,525 INFO ]: Without dead ends: 10 [2018-06-22 06:12:45,526 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-06-22 06:12:45,526 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 06:12:45,527 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 06:12:45,527 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 06:12:45,528 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 06:12:45,528 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 06:12:45,528 INFO ]: Finished accepts. word is rejected. [2018-06-22 06:12:45,528 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 06:12:45,528 INFO ]: Interpolant automaton has 6 states. [2018-06-22 06:12:45,528 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 06:12:45,528 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 06:12:45,528 INFO ]: Found error trace [2018-06-22 06:12:45,528 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 06:12:45,529 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 06:12:45,530 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-22 06:12:45,530 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 06:12:45,530 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 06:12:45,531 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:12:45,531 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 06:12:45,531 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:12:45,607 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:12:45,734 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:12:45,734 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 06:12:45,734 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 06:12:45,741 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 06:12:45,806 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 06:12:45,806 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:12:45,809 INFO ]: Computing forward predicates... [2018-06-22 06:12:45,928 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 06:12:45,954 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 06:12:46,474 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:12:46,494 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 06:12:46,494 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-22 06:12:46,494 INFO ]: Interpolant automaton has 8 states [2018-06-22 06:12:46,494 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 06:12:46,494 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-22 06:12:46,495 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-06-22 06:12:46,636 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 06:12:46,636 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 06:12:46,637 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 06:12:46,637 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-22 06:12:46,637 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 06:12:46,637 INFO ]: With dead ends: 11 [2018-06-22 06:12:46,637 INFO ]: Without dead ends: 11 [2018-06-22 06:12:46,638 INFO ]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-06-22 06:12:46,638 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 06:12:46,639 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 06:12:46,639 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 06:12:46,639 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 06:12:46,639 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-22 06:12:46,639 INFO ]: Finished accepts. word is rejected. [2018-06-22 06:12:46,639 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 06:12:46,639 INFO ]: Interpolant automaton has 8 states. [2018-06-22 06:12:46,639 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 06:12:46,640 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 06:12:46,640 INFO ]: Found error trace [2018-06-22 06:12:46,640 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 06:12:46,640 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 06:12:46,640 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 3 times [2018-06-22 06:12:46,640 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 06:12:46,640 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 06:12:46,642 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:12:46,642 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 06:12:46,642 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:12:46,694 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:12:46,888 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:12:46,888 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 06:12:46,888 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 06:12:46,894 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 06:12:46,970 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 06:12:46,970 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:12:46,973 INFO ]: Computing forward predicates... [2018-06-22 06:12:47,414 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:12:47,417 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:12:47,420 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:12:47,426 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 06:12:47,442 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:12:47,448 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:12:47,452 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 06:12:47,465 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:12:47,829 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:12:47,860 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 06:12:47,860 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 06:12:47,861 INFO ]: Interpolant automaton has 10 states [2018-06-22 06:12:47,861 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 06:12:47,861 INFO ]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-06-22 06:12:47,861 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-06-22 06:12:48,061 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 06:12:48,061 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-22 06:12:48,061 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 06:12:48,061 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-22 06:12:48,062 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 06:12:48,062 INFO ]: With dead ends: 12 [2018-06-22 06:12:48,062 INFO ]: Without dead ends: 12 [2018-06-22 06:12:48,063 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2018-06-22 06:12:48,063 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 06:12:48,064 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-22 06:12:48,064 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 06:12:48,064 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-22 06:12:48,064 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-06-22 06:12:48,064 INFO ]: Finished accepts. word is rejected. [2018-06-22 06:12:48,064 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-22 06:12:48,064 INFO ]: Interpolant automaton has 10 states. [2018-06-22 06:12:48,065 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-22 06:12:48,065 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 06:12:48,065 INFO ]: Found error trace [2018-06-22 06:12:48,065 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 06:12:48,065 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 06:12:48,065 INFO ]: Analyzing trace with hash 201204236, now seen corresponding path program 4 times [2018-06-22 06:12:48,065 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 06:12:48,065 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 06:12:48,066 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:12:48,066 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 06:12:48,066 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:12:48,092 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:12:48,271 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:12:48,272 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 06:12:48,272 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 06:12:48,278 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 06:12:48,311 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 06:12:48,311 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:12:48,314 INFO ]: Computing forward predicates... [2018-06-22 06:12:48,603 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:12:48,622 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 06:12:48,622 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-06-22 06:12:48,623 INFO ]: Interpolant automaton has 12 states [2018-06-22 06:12:48,623 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 06:12:48,623 INFO ]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-06-22 06:12:48,623 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 12 states. [2018-06-22 06:12:48,704 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 06:12:48,704 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 06:12:48,706 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 06:12:48,706 INFO ]: Start accepts. Automaton has 12 states. Word has length 11 [2018-06-22 06:12:48,706 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 06:12:48,706 INFO ]: With dead ends: 13 [2018-06-22 06:12:48,706 INFO ]: Without dead ends: 13 [2018-06-22 06:12:48,706 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-06-22 06:12:48,706 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 06:12:48,708 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 06:12:48,708 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 06:12:48,708 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 06:12:48,708 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-06-22 06:12:48,708 INFO ]: Finished accepts. word is rejected. [2018-06-22 06:12:48,708 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 06:12:48,708 INFO ]: Interpolant automaton has 12 states. [2018-06-22 06:12:48,708 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 06:12:48,708 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 06:12:48,709 INFO ]: Found error trace [2018-06-22 06:12:48,709 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 06:12:48,709 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 06:12:48,709 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 5 times [2018-06-22 06:12:48,709 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 06:12:48,709 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 06:12:48,709 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:12:48,709 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 06:12:48,709 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:12:48,747 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:12:48,926 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:12:48,926 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 06:12:48,926 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 06:12:48,939 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 06:12:49,001 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-06-22 06:12:49,001 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:12:49,005 INFO ]: Computing forward predicates... [2018-06-22 06:12:49,545 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 06:12:50,024 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 06:12:51,353 WARN ]: Spent 131.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 27 Received shutdown request... [2018-06-22 06:12:52,617 INFO ]: Timeout while computing interpolants [2018-06-22 06:12:52,817 WARN ]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 06:12:52,818 WARN ]: Verification canceled [2018-06-22 06:12:52,824 WARN ]: Timeout [2018-06-22 06:12:52,824 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 06:12:52 BoogieIcfgContainer [2018-06-22 06:12:52,824 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 06:12:52,826 INFO ]: Toolchain (without parser) took 77709.89 ms. Allocated memory was 308.8 MB in the beginning and 605.0 MB in the end (delta: 296.2 MB). Free memory was 262.2 MB in the beginning and 476.0 MB in the end (delta: -213.8 MB). Peak memory consumption was 82.4 MB. Max. memory is 3.6 GB. [2018-06-22 06:12:52,828 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 06:12:52,828 INFO ]: ChcToBoogie took 75.56 ms. Allocated memory is still 308.8 MB. Free memory was 262.2 MB in the beginning and 260.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 06:12:52,829 INFO ]: Boogie Preprocessor took 34.86 ms. Allocated memory is still 308.8 MB. Free memory was 260.2 MB in the beginning and 259.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 06:12:52,841 INFO ]: RCFGBuilder took 259.00 ms. Allocated memory is still 308.8 MB. Free memory was 258.2 MB in the beginning and 247.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 3.6 GB. [2018-06-22 06:12:52,842 INFO ]: TraceAbstraction took 77327.07 ms. Allocated memory was 308.8 MB in the beginning and 605.0 MB in the end (delta: 296.2 MB). Free memory was 247.2 MB in the beginning and 476.0 MB in the end (delta: -228.9 MB). Peak memory consumption was 67.4 MB. Max. memory is 3.6 GB. [2018-06-22 06:12:52,851 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 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 75.56 ms. Allocated memory is still 308.8 MB. Free memory was 262.2 MB in the beginning and 260.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 34.86 ms. Allocated memory is still 308.8 MB. Free memory was 260.2 MB in the beginning and 259.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 259.00 ms. Allocated memory is still 308.8 MB. Free memory was 258.2 MB in the beginning and 247.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 77327.07 ms. Allocated memory was 308.8 MB in the beginning and 605.0 MB in the end (delta: 296.2 MB). Free memory was 247.2 MB in the beginning and 476.0 MB in the end (delta: -228.9 MB). Peak memory consumption was 67.4 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 analyzing trace of length 13 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 12 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 77.2s OverallTime, 6 OverallIterations, 5 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 35 SDtfs, 6 SDslu, 114 SDs, 0 SdLazy, 96 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 71.6s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 2687 SizeOfPredicates, 19 NumberOfNonLiveVariables, 702 ConjunctsInSsa, 148 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 0/40 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/_6counters.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_06-12-52-876.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/_6counters.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_06-12-52-876.csv Completed graceful shutdown