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/lustre/PRODUCER_CONSUMER_vt_e3_507.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:39:50,018 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:39:50,020 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:39:50,033 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:39:50,033 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:39:50,034 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:39:50,035 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:39:50,040 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:39:50,041 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:39:50,042 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:39:50,043 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:39:50,043 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:39:50,044 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:39:50,045 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:39:50,046 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:39:50,046 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:39:50,051 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:39:50,053 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:39:50,064 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:39:50,066 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:39:50,067 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:39:50,069 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:39:50,069 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:39:50,070 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:39:50,071 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:39:50,072 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:39:50,072 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:39:50,080 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:39:50,081 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:39:50,082 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:39:50,082 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:39:50,083 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:39:50,083 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:39:50,084 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:39:50,084 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:39:50,084 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 19:39:50,109 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:39:50,109 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:39:50,109 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:39:50,110 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:39:50,110 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:39:50,111 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:39:50,111 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:39:50,111 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:39:50,111 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:39:50,111 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:39:50,112 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:39:50,112 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:39:50,112 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:39:50,112 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:39:50,112 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:39:50,113 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:39:50,113 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:39:50,114 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:39:50,114 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:39:50,115 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:39:50,115 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:39:50,162 INFO ]: Repository-Root is: /tmp [2018-06-22 19:39:50,177 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:39:50,181 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:39:50,183 INFO ]: Initializing SmtParser... [2018-06-22 19:39:50,183 INFO ]: SmtParser initialized [2018-06-22 19:39:50,184 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_vt_e3_507.smt2 [2018-06-22 19:39:50,185 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 19:39:50,276 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_vt_e3_507.smt2 unknown [2018-06-22 19:39:50,624 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_vt_e3_507.smt2 [2018-06-22 19:39:50,628 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:39:50,635 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:39:50,635 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:39:50,635 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:39:50,635 INFO ]: ChcToBoogie initialized [2018-06-22 19:39:50,638 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:39:50" (1/1) ... [2018-06-22 19:39:50,685 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:39:50 Unit [2018-06-22 19:39:50,685 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:39:50,685 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:39:50,685 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:39:50,686 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:39:50,706 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:39:50" (1/1) ... [2018-06-22 19:39:50,706 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:39:50" (1/1) ... [2018-06-22 19:39:50,717 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:39:50" (1/1) ... [2018-06-22 19:39:50,718 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:39:50" (1/1) ... [2018-06-22 19:39:50,734 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:39:50" (1/1) ... [2018-06-22 19:39:50,735 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:39:50" (1/1) ... [2018-06-22 19:39:50,737 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:39:50" (1/1) ... [2018-06-22 19:39:50,739 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:39:50,740 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:39:50,740 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:39:50,740 INFO ]: RCFGBuilder initialized [2018-06-22 19:39:50,741 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:39:50" (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 19:39:50,775 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:39:50,775 INFO ]: Found specification of procedure False [2018-06-22 19:39:50,775 INFO ]: Found implementation of procedure False [2018-06-22 19:39:50,775 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:39:50,775 INFO ]: Found specification of procedure state [2018-06-22 19:39:50,775 INFO ]: Found implementation of procedure state [2018-06-22 19:39:50,775 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:39:50,775 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:39:50,775 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 19:39:51,089 INFO ]: Using library mode [2018-06-22 19:39:51,090 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:39:51 BoogieIcfgContainer [2018-06-22 19:39:51,090 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:39:51,091 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:39:51,091 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:39:51,094 INFO ]: TraceAbstraction initialized [2018-06-22 19:39:51,095 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:39:50" (1/3) ... [2018-06-22 19:39:51,095 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c37f5e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:39:51, skipping insertion in model container [2018-06-22 19:39:51,096 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:39:50" (2/3) ... [2018-06-22 19:39:51,096 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c37f5e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:39:51, skipping insertion in model container [2018-06-22 19:39:51,096 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:39:51" (3/3) ... [2018-06-22 19:39:51,098 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:39:51,106 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:39:51,122 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:39:51,164 INFO ]: Using default assertion order modulation [2018-06-22 19:39:51,164 INFO ]: Interprodecural is true [2018-06-22 19:39:51,164 INFO ]: Hoare is false [2018-06-22 19:39:51,164 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:39:51,164 INFO ]: Backedges is TWOTRACK [2018-06-22 19:39:51,164 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:39:51,164 INFO ]: Difference is false [2018-06-22 19:39:51,164 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:39:51,164 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:39:51,180 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:39:51,193 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:39:51,194 INFO ]: Found error trace [2018-06-22 19:39:51,195 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:39:51,195 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:39:51,201 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 19:39:51,202 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:39:51,203 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:39:51,234 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:39:51,234 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:39:51,234 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:39:51,311 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:39:51,493 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:39:51,496 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:39:51,496 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:39:51,498 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:39:51,508 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:39:51,508 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:39:51,510 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:39:51,614 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:39:51,614 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:39:51,615 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:39:51,616 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:39:51,616 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:39:51,628 INFO ]: With dead ends: 13 [2018-06-22 19:39:51,628 INFO ]: Without dead ends: 13 [2018-06-22 19:39:51,630 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 19:39:51,642 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:39:51,674 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:39:51,676 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:39:51,676 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:39:51,677 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:39:51,677 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:39:51,678 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:39:51,678 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:39:51,678 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:39:51,679 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:39:51,679 INFO ]: Found error trace [2018-06-22 19:39:51,679 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:39:51,679 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:39:51,680 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 19:39:51,680 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:39:51,680 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:39:51,681 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:39:51,681 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:39:51,681 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:39:51,757 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:39:52,906 WARN ]: Spent 905.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2018-06-22 19:39:53,124 WARN ]: Spent 113.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 1 [2018-06-22 19:39:53,126 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:39:53,126 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:39:53,127 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 19:39:53,142 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 19:39:53,246 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:39:53,258 INFO ]: Computing forward predicates... [2018-06-22 19:39:53,461 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:39:53,516 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:39:53,532 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:39:54,972 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:39:54,995 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:39:54,995 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 19:39:54,996 INFO ]: Interpolant automaton has 8 states [2018-06-22 19:39:54,996 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 19:39:54,996 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-22 19:39:54,996 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 19:39:55,305 WARN ]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2018-06-22 19:39:55,420 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:39:55,420 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:39:55,421 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:39:55,421 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 19:39:55,421 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:39:55,421 INFO ]: With dead ends: 15 [2018-06-22 19:39:55,421 INFO ]: Without dead ends: 15 [2018-06-22 19:39:55,422 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-06-22 19:39:55,422 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:39:55,425 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:39:55,425 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:39:55,425 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:39:55,425 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:39:55,425 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:39:55,425 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:39:55,425 INFO ]: Interpolant automaton has 8 states. [2018-06-22 19:39:55,425 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:39:55,426 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:39:55,426 INFO ]: Found error trace [2018-06-22 19:39:55,426 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:39:55,426 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:39:55,427 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 19:39:55,427 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:39:55,427 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:39:55,427 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:39:55,428 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:39:55,428 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:39:55,488 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:39:55,799 WARN ]: Spent 122.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-06-22 19:39:56,198 WARN ]: Spent 114.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 1 [2018-06-22 19:39:56,200 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:39:56,200 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:39:56,200 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) [2018-06-22 19:39:56,215 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:39:56,312 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:39:56,312 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:39:56,321 INFO ]: Computing forward predicates... [2018-06-22 19:39:58,785 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 19:39:59,079 WARN ]: Simplifying disjunction of 20736 conjuctions. This might take some time... [2018-06-22 19:40:37,755 INFO ]: Simplified to disjunction of 10368 conjuctions. [2018-06-22 19:40:37,841 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 19:40:37,952 WARN ]: Simplifying disjunction of 10368 conjuctions. This might take some time... [2018-06-22 19:40:53,833 INFO ]: Simplified to disjunction of 10368 conjuctions. [2018-06-22 19:40:53,868 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 19:40:54,240 WARN ]: Simplifying disjunction of 20736 conjuctions. This might take some time... Received shutdown request... [2018-06-22 19:41:05,146 INFO ]: Timeout while computing interpolants [2018-06-22 19:41:05,346 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:41:05,347 WARN ]: Verification canceled [2018-06-22 19:41:05,351 WARN ]: Timeout [2018-06-22 19:41:05,351 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:41:05 BoogieIcfgContainer [2018-06-22 19:41:05,351 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:41:05,351 INFO ]: Toolchain (without parser) took 74722.66 ms. Allocated memory was 303.6 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 251.0 MB in the beginning and 979.2 MB in the end (delta: -728.2 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-22 19:41:05,352 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 303.6 MB. Free memory is still 269.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:41:05,352 INFO ]: ChcToBoogie took 50.10 ms. Allocated memory is still 303.6 MB. Free memory was 250.0 MB in the beginning and 248.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:41:05,353 INFO ]: Boogie Preprocessor took 53.92 ms. Allocated memory is still 303.6 MB. Free memory was 248.0 MB in the beginning and 247.0 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 19:41:05,353 INFO ]: RCFGBuilder took 350.08 ms. Allocated memory is still 303.6 MB. Free memory was 247.0 MB in the beginning and 229.9 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 3.6 GB. [2018-06-22 19:41:05,354 INFO ]: TraceAbstraction took 74259.41 ms. Allocated memory was 303.6 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 229.9 MB in the beginning and 979.2 MB in the end (delta: -749.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-22 19:41:05,356 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 303.6 MB. Free memory is still 269.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 50.10 ms. Allocated memory is still 303.6 MB. Free memory was 250.0 MB in the beginning and 248.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 53.92 ms. Allocated memory is still 303.6 MB. Free memory was 248.0 MB in the beginning and 247.0 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 350.08 ms. Allocated memory is still 303.6 MB. Free memory was 247.0 MB in the beginning and 229.9 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 74259.41 ms. Allocated memory was 303.6 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 229.9 MB in the beginning and 979.2 MB in the end (delta: -749.3 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 18 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 20736 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 74.1s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 7 SDslu, 47 SDs, 0 SdLazy, 33 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=2, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 2976 SizeOfPredicates, 36 NumberOfNonLiveVariables, 322 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/6 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/PRODUCER_CONSUMER_vt_e3_507.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-41-05-368.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/PRODUCER_CONSUMER_vt_e3_507.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-41-05-368.csv Completed graceful shutdown