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/car_all_e7_188_e7_743.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 16:06:16,980 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 16:06:16,982 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 16:06:16,993 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 16:06:16,993 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 16:06:16,994 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 16:06:16,995 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 16:06:17,000 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 16:06:17,001 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 16:06:17,003 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 16:06:17,004 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 16:06:17,004 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 16:06:17,005 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 16:06:17,006 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 16:06:17,007 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 16:06:17,007 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 16:06:17,009 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 16:06:17,011 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 16:06:17,013 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 16:06:17,014 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 16:06:17,015 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 16:06:17,017 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 16:06:17,017 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 16:06:17,018 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 16:06:17,018 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 16:06:17,019 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 16:06:17,020 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 16:06:17,021 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 16:06:17,022 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 16:06:17,022 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 16:06:17,023 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 16:06:17,024 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 16:06:17,024 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 16:06:17,025 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 16:06:17,025 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 16:06:17,025 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 16:06:17,039 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 16:06:17,039 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 16:06:17,039 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 16:06:17,040 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 16:06:17,041 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 16:06:17,041 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 16:06:17,041 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 16:06:17,041 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 16:06:17,042 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 16:06:17,042 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 16:06:17,042 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 16:06:17,042 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 16:06:17,042 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 16:06:17,043 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 16:06:17,043 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 16:06:17,043 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 16:06:17,043 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 16:06:17,043 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 16:06:17,044 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 16:06:17,045 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 16:06:17,045 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 16:06:17,098 INFO ]: Repository-Root is: /tmp [2018-06-22 16:06:17,116 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 16:06:17,121 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 16:06:17,122 INFO ]: Initializing SmtParser... [2018-06-22 16:06:17,123 INFO ]: SmtParser initialized [2018-06-22 16:06:17,124 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/car_all_e7_188_e7_743.smt2 [2018-06-22 16:06:17,125 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 16:06:17,223 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_all_e7_188_e7_743.smt2 unknown [2018-06-22 16:06:17,622 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_all_e7_188_e7_743.smt2 [2018-06-22 16:06:17,627 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 16:06:17,639 INFO ]: Walking toolchain with 4 elements. [2018-06-22 16:06:17,639 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 16:06:17,639 INFO ]: Initializing ChcToBoogie... [2018-06-22 16:06:17,639 INFO ]: ChcToBoogie initialized [2018-06-22 16:06:17,643 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:06:17" (1/1) ... [2018-06-22 16:06:17,697 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:06:17 Unit [2018-06-22 16:06:17,697 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 16:06:17,698 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 16:06:17,698 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 16:06:17,698 INFO ]: Boogie Preprocessor initialized [2018-06-22 16:06:17,722 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:06:17" (1/1) ... [2018-06-22 16:06:17,722 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:06:17" (1/1) ... [2018-06-22 16:06:17,735 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:06:17" (1/1) ... [2018-06-22 16:06:17,735 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:06:17" (1/1) ... [2018-06-22 16:06:17,753 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:06:17" (1/1) ... [2018-06-22 16:06:17,755 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:06:17" (1/1) ... [2018-06-22 16:06:17,756 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:06:17" (1/1) ... [2018-06-22 16:06:17,760 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 16:06:17,760 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 16:06:17,760 INFO ]: Initializing RCFGBuilder... [2018-06-22 16:06:17,760 INFO ]: RCFGBuilder initialized [2018-06-22 16:06:17,761 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:06:17" (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 16:06:17,771 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 16:06:17,772 INFO ]: Found specification of procedure False [2018-06-22 16:06:17,772 INFO ]: Found implementation of procedure False [2018-06-22 16:06:17,772 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 16:06:17,772 INFO ]: Found specification of procedure state [2018-06-22 16:06:17,772 INFO ]: Found implementation of procedure state [2018-06-22 16:06:17,772 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 16:06:17,772 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 16:06:17,772 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 16:06:18,121 INFO ]: Using library mode [2018-06-22 16:06:18,121 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:06:18 BoogieIcfgContainer [2018-06-22 16:06:18,121 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 16:06:18,131 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 16:06:18,131 INFO ]: Initializing TraceAbstraction... [2018-06-22 16:06:18,134 INFO ]: TraceAbstraction initialized [2018-06-22 16:06:18,134 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:06:17" (1/3) ... [2018-06-22 16:06:18,135 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b9677a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 04:06:18, skipping insertion in model container [2018-06-22 16:06:18,135 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:06:17" (2/3) ... [2018-06-22 16:06:18,135 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b9677a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:06:18, skipping insertion in model container [2018-06-22 16:06:18,135 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:06:18" (3/3) ... [2018-06-22 16:06:18,137 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 16:06:18,150 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 16:06:18,160 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 16:06:18,201 INFO ]: Using default assertion order modulation [2018-06-22 16:06:18,201 INFO ]: Interprodecural is true [2018-06-22 16:06:18,201 INFO ]: Hoare is false [2018-06-22 16:06:18,201 INFO ]: Compute interpolants for FPandBP [2018-06-22 16:06:18,201 INFO ]: Backedges is TWOTRACK [2018-06-22 16:06:18,202 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 16:06:18,202 INFO ]: Difference is false [2018-06-22 16:06:18,202 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 16:06:18,202 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 16:06:18,214 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 16:06:18,224 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 16:06:18,224 INFO ]: Found error trace [2018-06-22 16:06:18,225 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:06:18,226 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:06:18,231 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 16:06:18,233 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:06:18,233 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:06:18,270 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:06:18,270 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:06:18,270 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:06:18,342 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:06:18,539 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 16:06:18,541 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 16:06:18,541 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 16:06:18,543 INFO ]: Interpolant automaton has 4 states [2018-06-22 16:06:18,553 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 16:06:18,554 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 16:06:18,556 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 16:06:18,669 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:06:18,669 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 16:06:18,670 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 16:06:18,671 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 16:06:18,671 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:06:18,681 INFO ]: With dead ends: 13 [2018-06-22 16:06:18,681 INFO ]: Without dead ends: 13 [2018-06-22 16:06:18,682 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 16:06:18,696 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 16:06:18,731 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 16:06:18,732 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 16:06:18,733 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 16:06:18,734 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 16:06:18,734 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:06:18,735 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 16:06:18,735 INFO ]: Interpolant automaton has 4 states. [2018-06-22 16:06:18,735 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 16:06:18,736 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 16:06:18,736 INFO ]: Found error trace [2018-06-22 16:06:18,736 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:06:18,736 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:06:18,736 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 16:06:18,736 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:06:18,737 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:06:18,737 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:06:18,737 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:06:18,737 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:06:18,818 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:06:20,315 WARN ]: Spent 1.20 s on a formula simplification. DAG size of input: 99 DAG size of output: 47 [2018-06-22 16:06:20,367 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 16:06:20,368 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:06:20,368 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 16:06:20,375 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:06:20,445 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:06:20,455 INFO ]: Computing forward predicates... [2018-06-22 16:06:21,065 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 16:06:21,387 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:06:21,598 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:06:21,670 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:06:21,835 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 16:06:21,970 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 16:06:22,081 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 16:06:22,198 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:06:22,290 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:06:22,366 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 16:06:22,503 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:06:22,612 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 16:06:22,677 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 16:06:22,741 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:06:22,850 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 16:06:22,934 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:06:25,336 WARN ]: Spent 594.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 31 [2018-06-22 16:06:25,452 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 16:06:25,481 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:06:25,481 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 16:06:25,482 INFO ]: Interpolant automaton has 8 states [2018-06-22 16:06:25,482 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 16:06:25,482 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-22 16:06:25,482 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 16:06:25,864 WARN ]: Spent 261.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2018-06-22 16:06:25,979 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:06:25,979 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 16:06:25,980 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 16:06:25,980 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 16:06:25,981 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:06:25,981 INFO ]: With dead ends: 15 [2018-06-22 16:06:25,981 INFO ]: Without dead ends: 15 [2018-06-22 16:06:25,982 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-06-22 16:06:25,982 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 16:06:25,985 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 16:06:25,985 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 16:06:25,985 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 16:06:25,985 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 16:06:25,985 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:06:25,985 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 16:06:25,985 INFO ]: Interpolant automaton has 8 states. [2018-06-22 16:06:25,985 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 16:06:25,986 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 16:06:25,986 INFO ]: Found error trace [2018-06-22 16:06:25,986 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:06:25,986 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:06:25,986 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 16:06:25,986 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:06:25,986 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:06:25,987 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:06:25,987 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:06:25,987 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:06:26,074 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:06:26,909 WARN ]: Spent 604.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 123 [2018-06-22 16:06:27,095 WARN ]: Spent 162.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 76 [2018-06-22 16:06:27,265 WARN ]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2018-06-22 16:06:27,383 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 16:06:27,383 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:06:27,383 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 16:06:27,402 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 16:06:27,493 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 16:06:27,493 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:06:27,501 INFO ]: Computing forward predicates... [2018-06-22 16:06:27,946 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 16:06:27,959 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 16:06:27,972 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 16:06:27,988 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:06:28,009 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:06:28,026 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 16:06:28,045 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:06:28,073 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 16:06:28,086 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:06:28,101 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 16:06:38,003 WARN ]: Spent 2.09 s on a formula simplification. DAG size of input: 305 DAG size of output: 36 [2018-06-22 16:06:45,696 WARN ]: Spent 3.64 s on a formula simplification. DAG size of input: 387 DAG size of output: 67 [2018-06-22 16:06:46,844 WARN ]: Spent 628.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2018-06-22 16:06:46,901 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 16:06:46,927 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:06:46,927 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 16:06:46,927 INFO ]: Interpolant automaton has 13 states [2018-06-22 16:06:46,927 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 16:06:46,927 INFO ]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-06-22 16:06:46,928 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 16:06:48,564 WARN ]: Spent 1.50 s on a formula simplification. DAG size of input: 240 DAG size of output: 202 [2018-06-22 16:06:49,111 WARN ]: Spent 483.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 107 [2018-06-22 16:06:50,303 WARN ]: Spent 1.07 s on a formula simplification. DAG size of input: 240 DAG size of output: 122 [2018-06-22 16:06:50,365 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:06:50,366 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 16:06:50,366 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 16:06:50,366 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-22 16:06:50,366 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:06:50,367 INFO ]: With dead ends: 17 [2018-06-22 16:06:50,367 INFO ]: Without dead ends: 17 [2018-06-22 16:06:50,367 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-06-22 16:06:50,367 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 16:06:50,370 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 16:06:50,370 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 16:06:50,370 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 16:06:50,371 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 16:06:50,371 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:06:50,371 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 16:06:50,371 INFO ]: Interpolant automaton has 13 states. [2018-06-22 16:06:50,371 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 16:06:50,371 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 16:06:50,371 INFO ]: Found error trace [2018-06-22 16:06:50,372 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:06:50,372 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:06:50,372 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 16:06:50,372 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:06:50,372 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:06:50,373 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:06:50,373 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 16:06:50,373 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:06:50,487 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:06:51,846 WARN ]: Spent 986.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 109 [2018-06-22 16:06:52,496 WARN ]: Spent 570.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 95 [2018-06-22 16:06:52,729 WARN ]: Spent 210.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2018-06-22 16:06:53,160 WARN ]: Spent 212.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 54 [2018-06-22 16:06:53,257 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 16:06:53,257 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:06:53,257 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 16:06:53,264 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 16:06:53,354 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 16:06:53,354 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:06:53,359 INFO ]: Computing forward predicates... [2018-06-22 16:06:53,455 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 16:06:54,211 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 16:06:58,777 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 16:06:59,617 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 16:07:02,974 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 16:07:06,733 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 16:07:10,441 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 16:07:11,275 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:07:11,419 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:07:11,584 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:07:11,757 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:07:11,883 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:07:12,270 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 16:07:12,727 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:07:12,787 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:07:12,965 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 16:07:13,150 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:07:13,211 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 16:07:13,515 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:07:13,636 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:07:13,782 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:07:13,977 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:07:14,110 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:07:14,304 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 16:07:14,932 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 16:07:17,473 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 16:07:18,479 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 16:07:19,205 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 16:07:19,226 WARN ]: Simplifying disjunction of 6912 conjuctions. This might take some time... Received shutdown request... [2018-06-22 16:07:22,348 INFO ]: Timeout while computing interpolants [2018-06-22 16:07:22,548 WARN ]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 16:07:22,549 WARN ]: Verification canceled [2018-06-22 16:07:22,552 WARN ]: Timeout [2018-06-22 16:07:22,552 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 04:07:22 BoogieIcfgContainer [2018-06-22 16:07:22,552 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 16:07:22,553 INFO ]: Toolchain (without parser) took 64926.01 ms. Allocated memory was 306.2 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 252.6 MB in the beginning and 1.2 GB in the end (delta: -997.1 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. [2018-06-22 16:07:22,554 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 306.2 MB. Free memory is still 268.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 16:07:22,554 INFO ]: ChcToBoogie took 58.24 ms. Allocated memory is still 306.2 MB. Free memory was 252.6 MB in the beginning and 250.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 16:07:22,554 INFO ]: Boogie Preprocessor took 61.93 ms. Allocated memory is still 306.2 MB. Free memory was 250.6 MB in the beginning and 248.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 16:07:22,554 INFO ]: RCFGBuilder took 361.20 ms. Allocated memory is still 306.2 MB. Free memory was 248.6 MB in the beginning and 232.7 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. [2018-06-22 16:07:22,555 INFO ]: TraceAbstraction took 64421.61 ms. Allocated memory was 306.2 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 232.7 MB in the beginning and 1.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. [2018-06-22 16:07:22,558 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 306.2 MB. Free memory is still 268.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 58.24 ms. Allocated memory is still 306.2 MB. Free memory was 252.6 MB in the beginning and 250.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 61.93 ms. Allocated memory is still 306.2 MB. Free memory was 250.6 MB in the beginning and 248.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 361.20 ms. Allocated memory is still 306.2 MB. Free memory was 248.6 MB in the beginning and 232.7 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 64421.61 ms. Allocated memory was 306.2 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 232.7 MB in the beginning and 1.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.1 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 22 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 6912 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 64.3s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 4.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 33 SDtfs, 19 SDslu, 124 SDs, 0 SdLazy, 94 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 14.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 27.4s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 32824 SizeOfPredicates, 88 NumberOfNonLiveVariables, 586 ConjunctsInSsa, 163 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 8/26 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/car_all_e7_188_e7_743.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_16-07-22-568.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/car_all_e7_188_e7_743.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_16-07-22-568.csv Completed graceful shutdown