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/car_4_e8_118_e7_178.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 06:14:02,894 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 06:14:02,896 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 06:14:02,910 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 06:14:02,910 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 06:14:02,911 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 06:14:02,912 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 06:14:02,916 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 06:14:02,917 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 06:14:02,919 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 06:14:02,920 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 06:14:02,920 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 06:14:02,921 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 06:14:02,922 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 06:14:02,926 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 06:14:02,927 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 06:14:02,929 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 06:14:02,941 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 06:14:02,943 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 06:14:02,944 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 06:14:02,945 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 06:14:02,947 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 06:14:02,947 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 06:14:02,947 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 06:14:02,948 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 06:14:02,953 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 06:14:02,954 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 06:14:02,955 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 06:14:02,956 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 06:14:02,956 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 06:14:02,956 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 06:14:02,962 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 06:14:02,962 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 06:14:02,963 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 06:14:02,964 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 06:14:02,964 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 06:14:02,986 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 06:14:02,986 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 06:14:02,987 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 06:14:02,988 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 06:14:02,988 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 06:14:02,989 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 06:14:02,989 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 06:14:02,989 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 06:14:02,989 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 06:14:02,989 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 06:14:02,990 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 06:14:02,990 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 06:14:02,990 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 06:14:02,990 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 06:14:02,990 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 06:14:02,990 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 06:14:02,991 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 06:14:02,993 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 06:14:02,993 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 06:14:03,036 INFO ]: Repository-Root is: /tmp [2018-06-22 06:14:03,051 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 06:14:03,056 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 06:14:03,057 INFO ]: Initializing SmtParser... [2018-06-22 06:14:03,058 INFO ]: SmtParser initialized [2018-06-22 06:14:03,058 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/car_4_e8_118_e7_178.smt2 [2018-06-22 06:14:03,059 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 06:14:03,151 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_4_e8_118_e7_178.smt2 unknown [2018-06-22 06:14:03,581 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_4_e8_118_e7_178.smt2 [2018-06-22 06:14:03,585 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 06:14:03,591 INFO ]: Walking toolchain with 4 elements. [2018-06-22 06:14:03,592 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 06:14:03,592 INFO ]: Initializing ChcToBoogie... [2018-06-22 06:14:03,592 INFO ]: ChcToBoogie initialized [2018-06-22 06:14:03,595 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 06:14:03" (1/1) ... [2018-06-22 06:14:03,659 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:03 Unit [2018-06-22 06:14:03,660 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 06:14:03,660 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 06:14:03,660 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 06:14:03,660 INFO ]: Boogie Preprocessor initialized [2018-06-22 06:14:03,681 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:03" (1/1) ... [2018-06-22 06:14:03,681 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:03" (1/1) ... [2018-06-22 06:14:03,690 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:03" (1/1) ... [2018-06-22 06:14:03,690 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:03" (1/1) ... [2018-06-22 06:14:03,696 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:03" (1/1) ... [2018-06-22 06:14:03,699 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:03" (1/1) ... [2018-06-22 06:14:03,701 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:03" (1/1) ... [2018-06-22 06:14:03,705 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 06:14:03,706 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 06:14:03,706 INFO ]: Initializing RCFGBuilder... [2018-06-22 06:14:03,706 INFO ]: RCFGBuilder initialized [2018-06-22 06:14:03,707 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:03" (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 06:14:03,726 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 06:14:03,726 INFO ]: Found specification of procedure gotoProc [2018-06-22 06:14:03,726 INFO ]: Found implementation of procedure gotoProc [2018-06-22 06:14:03,726 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 06:14:03,726 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 06:14:03,726 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 06:14:04,092 INFO ]: Using library mode [2018-06-22 06:14:04,093 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:14:04 BoogieIcfgContainer [2018-06-22 06:14:04,093 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 06:14:04,094 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 06:14:04,094 INFO ]: Initializing TraceAbstraction... [2018-06-22 06:14:04,098 INFO ]: TraceAbstraction initialized [2018-06-22 06:14:04,098 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 06:14:03" (1/3) ... [2018-06-22 06:14:04,099 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7997c206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 06:14:04, skipping insertion in model container [2018-06-22 06:14:04,099 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:03" (2/3) ... [2018-06-22 06:14:04,099 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7997c206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 06:14:04, skipping insertion in model container [2018-06-22 06:14:04,100 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:14:04" (3/3) ... [2018-06-22 06:14:04,101 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 06:14:04,111 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 06:14:04,121 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 06:14:04,159 INFO ]: Using default assertion order modulation [2018-06-22 06:14:04,160 INFO ]: Interprodecural is true [2018-06-22 06:14:04,160 INFO ]: Hoare is false [2018-06-22 06:14:04,160 INFO ]: Compute interpolants for FPandBP [2018-06-22 06:14:04,160 INFO ]: Backedges is TWOTRACK [2018-06-22 06:14:04,160 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 06:14:04,160 INFO ]: Difference is false [2018-06-22 06:14:04,160 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 06:14:04,160 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 06:14:04,174 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 06:14:04,186 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 06:14:04,186 INFO ]: Found error trace [2018-06-22 06:14:04,187 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 06:14:04,187 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 06:14:04,193 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 06:14:04,195 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 06:14:04,196 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 06:14:04,242 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:14:04,242 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 06:14:04,242 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:14:04,320 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:14:04,444 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:14:04,451 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 06:14:04,452 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 06:14:04,454 INFO ]: Interpolant automaton has 3 states [2018-06-22 06:14:04,466 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 06:14:04,466 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 06:14:04,468 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 06:14:04,550 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 06:14:04,551 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 06:14:04,553 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 06:14:04,554 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 06:14:04,554 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 06:14:04,563 INFO ]: With dead ends: 9 [2018-06-22 06:14:04,563 INFO ]: Without dead ends: 9 [2018-06-22 06:14:04,567 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 06:14:04,583 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 06:14:04,606 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 06:14:04,607 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 06:14:04,607 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 06:14:04,609 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 06:14:04,609 INFO ]: Finished accepts. word is rejected. [2018-06-22 06:14:04,609 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 06:14:04,609 INFO ]: Interpolant automaton has 3 states. [2018-06-22 06:14:04,609 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 06:14:04,609 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 06:14:04,609 INFO ]: Found error trace [2018-06-22 06:14:04,609 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 06:14:04,609 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 06:14:04,610 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 06:14:04,610 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 06:14:04,610 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 06:14:04,611 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:14:04,611 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 06:14:04,611 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:14:04,678 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:14:05,020 WARN ]: Spent 169.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2018-06-22 06:14:05,021 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:14:05,021 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 06:14:05,021 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 06:14:05,029 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 06:14:05,143 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:14:05,169 INFO ]: Computing forward predicates... [2018-06-22 06:14:05,331 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:14:05,531 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:14:05,606 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:14:05,757 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:14:07,928 WARN ]: Spent 279.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 11 [2018-06-22 06:14:07,934 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:14:07,955 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 06:14:07,955 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-22 06:14:07,955 INFO ]: Interpolant automaton has 6 states [2018-06-22 06:14:07,955 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 06:14:07,955 INFO ]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-06-22 06:14:07,956 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-22 06:14:08,003 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 06:14:08,003 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 06:14:08,004 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 06:14:08,004 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-22 06:14:08,004 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 06:14:08,004 INFO ]: With dead ends: 10 [2018-06-22 06:14:08,004 INFO ]: Without dead ends: 10 [2018-06-22 06:14:08,005 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 06:14:08,005 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 06:14:08,006 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 06:14:08,006 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 06:14:08,007 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 06:14:08,007 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 06:14:08,007 INFO ]: Finished accepts. word is rejected. [2018-06-22 06:14:08,007 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 06:14:08,007 INFO ]: Interpolant automaton has 6 states. [2018-06-22 06:14:08,007 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 06:14:08,007 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 06:14:08,007 INFO ]: Found error trace [2018-06-22 06:14:08,007 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 06:14:08,008 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 06:14:08,008 INFO ]: Analyzing trace with hash -2043975570, now seen corresponding path program 2 times [2018-06-22 06:14:08,008 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 06:14:08,008 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 06:14:08,009 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:14:08,009 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 06:14:08,009 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:14:08,116 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:14:08,296 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:14:08,296 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 06:14:08,296 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 06:14:08,302 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 06:14:08,392 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 06:14:08,392 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:14:08,397 INFO ]: Computing forward predicates... [2018-06-22 06:14:08,618 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:14:08,661 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 06:14:08,670 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 06:14:09,384 WARN ]: Spent 118.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 11 [2018-06-22 06:14:09,395 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:14:09,417 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 06:14:09,417 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-22 06:14:09,417 INFO ]: Interpolant automaton has 8 states [2018-06-22 06:14:09,417 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 06:14:09,417 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-22 06:14:09,417 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-06-22 06:14:09,469 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 06:14:09,469 INFO ]: Finished difference Result 6 states and 6 transitions. [2018-06-22 06:14:09,469 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 06:14:09,469 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-22 06:14:09,469 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 06:14:09,469 INFO ]: With dead ends: 6 [2018-06-22 06:14:09,469 INFO ]: Without dead ends: 0 [2018-06-22 06:14:09,470 INFO ]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-06-22 06:14:09,470 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 06:14:09,470 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 06:14:09,470 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 06:14:09,470 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 06:14:09,470 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2018-06-22 06:14:09,470 INFO ]: Finished accepts. word is rejected. [2018-06-22 06:14:09,470 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 06:14:09,470 INFO ]: Interpolant automaton has 8 states. [2018-06-22 06:14:09,470 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 06:14:09,470 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 06:14:09,475 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 06:14:09 BoogieIcfgContainer [2018-06-22 06:14:09,475 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 06:14:09,476 INFO ]: Toolchain (without parser) took 5889.60 ms. Allocated memory was 309.3 MB in the beginning and 393.2 MB in the end (delta: 83.9 MB). Free memory was 257.9 MB in the beginning and 189.1 MB in the end (delta: 68.8 MB). Peak memory consumption was 152.7 MB. Max. memory is 3.6 GB. [2018-06-22 06:14:09,477 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 06:14:09,477 INFO ]: ChcToBoogie took 68.12 ms. Allocated memory is still 309.3 MB. Free memory was 257.9 MB in the beginning and 255.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 06:14:09,478 INFO ]: Boogie Preprocessor took 45.29 ms. Allocated memory is still 309.3 MB. Free memory was 255.9 MB in the beginning and 253.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 06:14:09,478 INFO ]: RCFGBuilder took 386.93 ms. Allocated memory is still 309.3 MB. Free memory was 253.9 MB in the beginning and 234.8 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 3.6 GB. [2018-06-22 06:14:09,479 INFO ]: TraceAbstraction took 5380.79 ms. Allocated memory was 309.3 MB in the beginning and 393.2 MB in the end (delta: 83.9 MB). Free memory was 233.8 MB in the beginning and 189.1 MB in the end (delta: 44.8 MB). Peak memory consumption was 128.7 MB. Max. memory is 3.6 GB. [2018-06-22 06:14:09,482 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 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 68.12 ms. Allocated memory is still 309.3 MB. Free memory was 257.9 MB in the beginning and 255.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 45.29 ms. Allocated memory is still 309.3 MB. Free memory was 255.9 MB in the beginning and 253.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 386.93 ms. Allocated memory is still 309.3 MB. Free memory was 253.9 MB in the beginning and 234.8 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 5380.79 ms. Allocated memory was 309.3 MB in the beginning and 393.2 MB in the end (delta: 83.9 MB). Free memory was 233.8 MB in the beginning and 189.1 MB in the end (delta: 44.8 MB). Peak memory consumption was 128.7 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. SAFE Result, 5.3s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 32 SDs, 0 SdLazy, 24 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, 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: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 1053 SizeOfPredicates, 21 NumberOfNonLiveVariables, 668 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/car_4_e8_118_e7_178.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_06-14-09-492.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/car_4_e8_118_e7_178.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_06-14-09-492.csv Received shutdown request...