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/cav12/floppy_simpl4.cil.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 04:22:18,082 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 04:22:18,084 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 04:22:18,097 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 04:22:18,098 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 04:22:18,099 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 04:22:18,102 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 04:22:18,105 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 04:22:18,106 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 04:22:18,108 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 04:22:18,109 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 04:22:18,109 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 04:22:18,110 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 04:22:18,111 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 04:22:18,111 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 04:22:18,112 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 04:22:18,117 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 04:22:18,118 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 04:22:18,130 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 04:22:18,131 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 04:22:18,132 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 04:22:18,134 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 04:22:18,134 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 04:22:18,135 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 04:22:18,135 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 04:22:18,136 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 04:22:18,141 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 04:22:18,142 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 04:22:18,142 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 04:22:18,143 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 04:22:18,143 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 04:22:18,144 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 04:22:18,144 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 04:22:18,145 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 04:22:18,145 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 04:22:18,151 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 04:22:18,172 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 04:22:18,173 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 04:22:18,173 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 04:22:18,173 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 04:22:18,174 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 04:22:18,174 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 04:22:18,175 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 04:22:18,175 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 04:22:18,175 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:22:18,175 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 04:22:18,175 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 04:22:18,176 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 04:22:18,176 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 04:22:18,177 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 04:22:18,177 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 04:22:18,177 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 04:22:18,177 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 04:22:18,178 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 04:22:18,179 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 04:22:18,238 INFO ]: Repository-Root is: /tmp [2018-06-22 04:22:18,257 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 04:22:18,259 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 04:22:18,260 INFO ]: Initializing SmtParser... [2018-06-22 04:22:18,261 INFO ]: SmtParser initialized [2018-06-22 04:22:18,261 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/floppy_simpl4.cil.smt2 [2018-06-22 04:22:18,262 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 04:22:18,332 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/floppy_simpl4.cil.smt2 unknown [2018-06-22 04:22:19,956 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/floppy_simpl4.cil.smt2 [2018-06-22 04:22:19,961 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 04:22:19,969 INFO ]: Walking toolchain with 4 elements. [2018-06-22 04:22:19,969 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 04:22:19,969 INFO ]: Initializing ChcToBoogie... [2018-06-22 04:22:19,969 INFO ]: ChcToBoogie initialized [2018-06-22 04:22:19,973 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:22:19" (1/1) ... [2018-06-22 04:22:20,097 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:22:20 Unit [2018-06-22 04:22:20,097 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 04:22:20,098 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 04:22:20,098 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 04:22:20,098 INFO ]: Boogie Preprocessor initialized [2018-06-22 04:22:20,121 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:22:20" (1/1) ... [2018-06-22 04:22:20,121 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:22:20" (1/1) ... [2018-06-22 04:22:20,154 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:22:20" (1/1) ... [2018-06-22 04:22:20,154 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:22:20" (1/1) ... [2018-06-22 04:22:20,189 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:22:20" (1/1) ... [2018-06-22 04:22:20,191 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:22:20" (1/1) ... [2018-06-22 04:22:20,213 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:22:20" (1/1) ... [2018-06-22 04:22:20,227 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 04:22:20,227 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 04:22:20,227 INFO ]: Initializing RCFGBuilder... [2018-06-22 04:22:20,227 INFO ]: RCFGBuilder initialized [2018-06-22 04:22:20,228 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:22:20" (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 04:22:20,243 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 04:22:20,243 INFO ]: Found specification of procedure gotoProc [2018-06-22 04:22:20,243 INFO ]: Found implementation of procedure gotoProc [2018-06-22 04:22:20,243 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 04:22:20,243 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 04:22:20,243 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 04:22:21,427 INFO ]: Using library mode [2018-06-22 04:22:21,428 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:22:21 BoogieIcfgContainer [2018-06-22 04:22:21,428 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 04:22:21,429 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 04:22:21,429 INFO ]: Initializing TraceAbstraction... [2018-06-22 04:22:21,433 INFO ]: TraceAbstraction initialized [2018-06-22 04:22:21,434 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:22:19" (1/3) ... [2018-06-22 04:22:21,434 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3145f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 04:22:21, skipping insertion in model container [2018-06-22 04:22:21,435 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:22:20" (2/3) ... [2018-06-22 04:22:21,435 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3145f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:22:21, skipping insertion in model container [2018-06-22 04:22:21,435 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:22:21" (3/3) ... [2018-06-22 04:22:21,437 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 04:22:21,447 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 04:22:21,458 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 04:22:21,510 INFO ]: Using default assertion order modulation [2018-06-22 04:22:21,511 INFO ]: Interprodecural is true [2018-06-22 04:22:21,511 INFO ]: Hoare is false [2018-06-22 04:22:21,511 INFO ]: Compute interpolants for FPandBP [2018-06-22 04:22:21,511 INFO ]: Backedges is TWOTRACK [2018-06-22 04:22:21,511 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 04:22:21,511 INFO ]: Difference is false [2018-06-22 04:22:21,511 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 04:22:21,511 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 04:22:21,531 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 04:22:21,545 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 04:22:21,545 INFO ]: Found error trace [2018-06-22 04:22:21,548 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:22:21,548 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:22:21,553 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 04:22:21,556 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:22:21,556 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:22:21,609 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:22:21,609 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:22:21,609 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:22:21,733 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:22:21,895 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:22:21,898 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 04:22:21,898 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 04:22:21,900 INFO ]: Interpolant automaton has 3 states [2018-06-22 04:22:21,915 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 04:22:21,915 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 04:22:21,917 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 04:22:22,072 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:22:22,072 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 04:22:22,072 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 04:22:22,074 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 04:22:22,074 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:22:22,084 INFO ]: With dead ends: 9 [2018-06-22 04:22:22,084 INFO ]: Without dead ends: 9 [2018-06-22 04:22:22,088 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 04:22:22,108 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 04:22:22,134 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 04:22:22,135 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 04:22:22,136 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 04:22:22,137 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 04:22:22,137 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:22:22,137 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 04:22:22,137 INFO ]: Interpolant automaton has 3 states. [2018-06-22 04:22:22,138 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 04:22:22,138 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 04:22:22,138 INFO ]: Found error trace [2018-06-22 04:22:22,138 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:22:22,138 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:22:22,138 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 04:22:22,138 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:22:22,138 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:22:22,139 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:22:22,139 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:22:22,139 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:22:22,581 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:22:23,096 WARN ]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-22 04:22:23,264 WARN ]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 04:22:23,265 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:22:23,266 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:22:23,266 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) [2018-06-22 04:22:23,281 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:22:23,604 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:22:23,628 INFO ]: Computing forward predicates... [2018-06-22 04:22:23,913 WARN ]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-22 04:22:27,907 WARN ]: Spent 210.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 18 [2018-06-22 04:22:27,911 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:22:27,937 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:22:27,937 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-22 04:22:27,937 INFO ]: Interpolant automaton has 6 states [2018-06-22 04:22:27,937 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 04:22:27,937 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 04:22:27,938 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-22 04:22:28,118 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:22:28,118 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 04:22:28,118 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 04:22:28,119 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-22 04:22:28,119 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:22:28,119 INFO ]: With dead ends: 11 [2018-06-22 04:22:28,119 INFO ]: Without dead ends: 11 [2018-06-22 04:22:28,120 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-22 04:22:28,120 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 04:22:28,121 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 04:22:28,121 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 04:22:28,122 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 04:22:28,122 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 04:22:28,122 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:22:28,122 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 04:22:28,122 INFO ]: Interpolant automaton has 6 states. [2018-06-22 04:22:28,122 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 04:22:28,122 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 04:22:28,122 INFO ]: Found error trace [2018-06-22 04:22:28,122 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:22:28,122 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:22:28,123 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 2 times [2018-06-22 04:22:28,123 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:22:28,123 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:22:28,123 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:22:28,123 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:22:28,123 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:22:28,868 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:22:29,802 WARN ]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-22 04:22:30,859 WARN ]: Spent 1.00 s on a formula simplification. DAG size of input: 26 DAG size of output: 18 [2018-06-22 04:22:31,791 WARN ]: Spent 842.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 55 [2018-06-22 04:22:31,820 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:22:31,820 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:22:31,820 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 04:22:31,828 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 04:22:32,452 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 04:22:32,452 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:22:32,500 INFO ]: Computing forward predicates... [2018-06-22 04:22:37,235 WARN ]: Spent 308.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2018-06-22 04:22:38,399 WARN ]: Spent 124.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 17 [2018-06-22 04:22:38,403 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:22:38,428 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:22:38,428 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 04:22:38,428 INFO ]: Interpolant automaton has 10 states [2018-06-22 04:22:38,428 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 04:22:38,428 INFO ]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-06-22 04:22:38,429 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-06-22 04:22:38,589 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:22:38,589 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-22 04:22:38,590 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 04:22:38,590 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-22 04:22:38,590 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:22:38,590 INFO ]: With dead ends: 12 [2018-06-22 04:22:38,590 INFO ]: Without dead ends: 12 [2018-06-22 04:22:38,591 INFO ]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-06-22 04:22:38,591 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 04:22:38,592 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-22 04:22:38,592 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 04:22:38,592 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-22 04:22:38,592 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-06-22 04:22:38,593 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:22:38,593 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-22 04:22:38,593 INFO ]: Interpolant automaton has 10 states. [2018-06-22 04:22:38,593 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-22 04:22:38,593 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 04:22:38,593 INFO ]: Found error trace [2018-06-22 04:22:38,593 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:22:38,593 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:22:38,593 INFO ]: Analyzing trace with hash -1433955954, now seen corresponding path program 3 times [2018-06-22 04:22:38,593 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:22:38,593 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:22:38,594 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:22:38,594 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:22:38,594 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:22:39,398 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:22:40,612 WARN ]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-22 04:22:41,207 WARN ]: Spent 541.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 22 [2018-06-22 04:22:41,573 WARN ]: Spent 277.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2018-06-22 04:22:42,108 WARN ]: Spent 432.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 60 [2018-06-22 04:22:42,117 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:22:42,118 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:22:42,118 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) [2018-06-22 04:22:42,137 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:22:42,780 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 04:22:42,780 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:22:42,834 INFO ]: Computing forward predicates... [2018-06-22 04:22:51,596 WARN ]: Spent 155.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2018-06-22 04:22:58,140 WARN ]: Simplifying disjunction of 6684 conjuctions. This might take some time... [2018-06-22 04:23:08,941 INFO ]: Simplified to disjunction of 6684 conjuctions. Received shutdown request... [2018-06-22 04:23:23,283 INFO ]: Timeout while computing interpolants [2018-06-22 04:23:23,483 WARN ]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:23:23,483 WARN ]: Verification canceled [2018-06-22 04:23:23,487 WARN ]: Timeout [2018-06-22 04:23:23,487 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 04:23:23 BoogieIcfgContainer [2018-06-22 04:23:23,487 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 04:23:23,490 INFO ]: Toolchain (without parser) took 63525.81 ms. Allocated memory was 338.2 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 222.0 MB in the beginning and 742.4 MB in the end (delta: -520.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 04:23:23,490 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.9 MB. Free memory is still 275.5 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 04:23:23,491 INFO ]: ChcToBoogie took 128.55 ms. Allocated memory is still 338.2 MB. Free memory was 222.0 MB in the beginning and 217.1 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 3.6 GB. [2018-06-22 04:23:23,491 INFO ]: Boogie Preprocessor took 128.80 ms. Allocated memory is still 338.2 MB. Free memory was 217.1 MB in the beginning and 212.2 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 3.6 GB. [2018-06-22 04:23:23,491 INFO ]: RCFGBuilder took 1200.69 ms. Allocated memory was 338.2 MB in the beginning and 380.1 MB in the end (delta: 41.9 MB). Free memory was 212.2 MB in the beginning and 215.4 MB in the end (delta: -3.2 MB). Peak memory consumption was 40.1 MB. Max. memory is 3.6 GB. [2018-06-22 04:23:23,491 INFO ]: TraceAbstraction took 62057.78 ms. Allocated memory was 380.1 MB in the beginning and 1.5 GB in the end (delta: 1.1 GB). Free memory was 215.4 MB in the beginning and 742.4 MB in the end (delta: -527.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-22 04:23:23,494 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 309.9 MB. Free memory is still 275.5 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 128.55 ms. Allocated memory is still 338.2 MB. Free memory was 222.0 MB in the beginning and 217.1 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 128.80 ms. Allocated memory is still 338.2 MB. Free memory was 217.1 MB in the beginning and 212.2 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 3.6 GB. * RCFGBuilder took 1200.69 ms. Allocated memory was 338.2 MB in the beginning and 380.1 MB in the end (delta: 41.9 MB). Free memory was 212.2 MB in the beginning and 215.4 MB in the end (delta: -3.2 MB). Peak memory consumption was 40.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 62057.78 ms. Allocated memory was 380.1 MB in the beginning and 1.5 GB in the end (delta: 1.1 GB). Free memory was 215.4 MB in the beginning and 742.4 MB in the end (delta: -527.0 MB). Peak memory consumption was 1.2 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 12 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while XnfDer was eliminating 164 quantified variables from 80 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 61.9s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 2 SDslu, 46 SDs, 0 SdLazy, 20 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 14.0s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 3952 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1718 ConjunctsInSsa, 82 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/14 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/floppy_simpl4.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_04-23-23-507.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/floppy_simpl4.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_04-23-23-507.csv Completed graceful shutdown