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_4_e8_118.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 15:54:11,055 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 15:54:11,059 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 15:54:11,071 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 15:54:11,072 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 15:54:11,072 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 15:54:11,074 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 15:54:11,078 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 15:54:11,080 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 15:54:11,081 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 15:54:11,082 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 15:54:11,082 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 15:54:11,083 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 15:54:11,084 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 15:54:11,085 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 15:54:11,086 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 15:54:11,087 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 15:54:11,089 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 15:54:11,098 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 15:54:11,099 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 15:54:11,100 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 15:54:11,102 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 15:54:11,103 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 15:54:11,103 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 15:54:11,112 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 15:54:11,113 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 15:54:11,114 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 15:54:11,114 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 15:54:11,115 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 15:54:11,116 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 15:54:11,116 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 15:54:11,117 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 15:54:11,117 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 15:54:11,118 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 15:54:11,118 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 15:54:11,119 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 15:54:11,142 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 15:54:11,144 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 15:54:11,145 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 15:54:11,145 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 15:54:11,146 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 15:54:11,146 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 15:54:11,146 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 15:54:11,147 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 15:54:11,147 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 15:54:11,147 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 15:54:11,147 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 15:54:11,147 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 15:54:11,148 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 15:54:11,148 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 15:54:11,148 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 15:54:11,148 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 15:54:11,148 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 15:54:11,148 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 15:54:11,149 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 15:54:11,150 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 15:54:11,150 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 15:54:11,198 INFO ]: Repository-Root is: /tmp [2018-06-22 15:54:11,213 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 15:54:11,218 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 15:54:11,219 INFO ]: Initializing SmtParser... [2018-06-22 15:54:11,220 INFO ]: SmtParser initialized [2018-06-22 15:54:11,220 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/car_4_e8_118.smt2 [2018-06-22 15:54:11,222 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 15:54:11,311 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_4_e8_118.smt2 unknown [2018-06-22 15:54:11,658 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_4_e8_118.smt2 [2018-06-22 15:54:11,663 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 15:54:11,680 INFO ]: Walking toolchain with 4 elements. [2018-06-22 15:54:11,680 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 15:54:11,680 INFO ]: Initializing ChcToBoogie... [2018-06-22 15:54:11,680 INFO ]: ChcToBoogie initialized [2018-06-22 15:54:11,683 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:54:11" (1/1) ... [2018-06-22 15:54:11,739 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:54:11 Unit [2018-06-22 15:54:11,739 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 15:54:11,740 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 15:54:11,740 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 15:54:11,740 INFO ]: Boogie Preprocessor initialized [2018-06-22 15:54:11,762 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:54:11" (1/1) ... [2018-06-22 15:54:11,762 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:54:11" (1/1) ... [2018-06-22 15:54:11,771 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:54:11" (1/1) ... [2018-06-22 15:54:11,771 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:54:11" (1/1) ... [2018-06-22 15:54:11,775 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:54:11" (1/1) ... [2018-06-22 15:54:11,776 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:54:11" (1/1) ... [2018-06-22 15:54:11,777 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:54:11" (1/1) ... [2018-06-22 15:54:11,780 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 15:54:11,781 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 15:54:11,781 INFO ]: Initializing RCFGBuilder... [2018-06-22 15:54:11,785 INFO ]: RCFGBuilder initialized [2018-06-22 15:54:11,786 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:54:11" (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 15:54:11,807 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 15:54:11,807 INFO ]: Found specification of procedure False [2018-06-22 15:54:11,807 INFO ]: Found implementation of procedure False [2018-06-22 15:54:11,807 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 15:54:11,807 INFO ]: Found specification of procedure state [2018-06-22 15:54:11,807 INFO ]: Found implementation of procedure state [2018-06-22 15:54:11,807 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 15:54:11,807 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 15:54:11,807 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 15:54:12,131 INFO ]: Using library mode [2018-06-22 15:54:12,132 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:54:12 BoogieIcfgContainer [2018-06-22 15:54:12,132 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 15:54:12,133 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 15:54:12,133 INFO ]: Initializing TraceAbstraction... [2018-06-22 15:54:12,145 INFO ]: TraceAbstraction initialized [2018-06-22 15:54:12,146 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:54:11" (1/3) ... [2018-06-22 15:54:12,147 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5d0d97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 03:54:12, skipping insertion in model container [2018-06-22 15:54:12,147 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:54:11" (2/3) ... [2018-06-22 15:54:12,147 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5d0d97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 03:54:12, skipping insertion in model container [2018-06-22 15:54:12,147 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:54:12" (3/3) ... [2018-06-22 15:54:12,149 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 15:54:12,163 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 15:54:12,171 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 15:54:12,214 INFO ]: Using default assertion order modulation [2018-06-22 15:54:12,215 INFO ]: Interprodecural is true [2018-06-22 15:54:12,215 INFO ]: Hoare is false [2018-06-22 15:54:12,215 INFO ]: Compute interpolants for FPandBP [2018-06-22 15:54:12,215 INFO ]: Backedges is TWOTRACK [2018-06-22 15:54:12,215 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 15:54:12,215 INFO ]: Difference is false [2018-06-22 15:54:12,215 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 15:54:12,215 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 15:54:12,228 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 15:54:12,237 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 15:54:12,238 INFO ]: Found error trace [2018-06-22 15:54:12,238 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:54:12,239 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:54:12,243 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 15:54:12,245 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:54:12,246 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:54:12,285 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:54:12,285 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:54:12,285 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:54:12,376 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:54:12,557 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 15:54:12,558 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 15:54:12,558 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 15:54:12,560 INFO ]: Interpolant automaton has 4 states [2018-06-22 15:54:12,570 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 15:54:12,571 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 15:54:12,573 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 15:54:12,676 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:54:12,676 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 15:54:12,677 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 15:54:12,678 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 15:54:12,678 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:54:12,687 INFO ]: With dead ends: 13 [2018-06-22 15:54:12,687 INFO ]: Without dead ends: 13 [2018-06-22 15:54:12,688 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 15:54:12,701 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 15:54:12,736 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 15:54:12,738 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 15:54:12,738 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 15:54:12,740 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 15:54:12,740 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:54:12,740 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 15:54:12,740 INFO ]: Interpolant automaton has 4 states. [2018-06-22 15:54:12,740 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 15:54:12,741 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 15:54:12,741 INFO ]: Found error trace [2018-06-22 15:54:12,741 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:54:12,742 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:54:12,742 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 15:54:12,742 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:54:12,742 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:54:12,744 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:54:12,744 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:54:12,744 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:54:12,837 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:54:13,713 WARN ]: Spent 628.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2018-06-22 15:54:13,934 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:54:13,934 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:54:13,934 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 15:54:13,943 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:54:14,023 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:54:14,034 INFO ]: Computing forward predicates... [2018-06-22 15:54:14,789 WARN ]: Spent 403.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 12 [2018-06-22 15:54:14,954 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:54:14,976 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:54:14,976 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 15:54:14,977 INFO ]: Interpolant automaton has 9 states [2018-06-22 15:54:14,977 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 15:54:14,977 INFO ]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-06-22 15:54:14,978 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 15:54:15,475 WARN ]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2018-06-22 15:54:15,532 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:54:15,532 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 15:54:15,533 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 15:54:15,533 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 15:54:15,533 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:54:15,534 INFO ]: With dead ends: 15 [2018-06-22 15:54:15,534 INFO ]: Without dead ends: 15 [2018-06-22 15:54:15,534 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-06-22 15:54:15,535 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 15:54:15,538 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 15:54:15,538 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 15:54:15,538 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 15:54:15,538 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 15:54:15,539 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:54:15,539 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 15:54:15,539 INFO ]: Interpolant automaton has 9 states. [2018-06-22 15:54:15,539 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 15:54:15,539 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 15:54:15,539 INFO ]: Found error trace [2018-06-22 15:54:15,539 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:54:15,539 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:54:15,540 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 15:54:15,540 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:54:15,540 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:54:15,540 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:54:15,540 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:54:15,540 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:54:15,595 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:54:16,053 WARN ]: Spent 183.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2018-06-22 15:54:16,099 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:54:16,099 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:54:16,099 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 15:54:16,105 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 15:54:16,210 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 15:54:16,210 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:54:16,217 INFO ]: Computing forward predicates... [2018-06-22 15:54:16,955 WARN ]: Spent 362.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2018-06-22 15:54:17,070 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:54:17,101 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:54:17,101 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 15:54:17,102 INFO ]: Interpolant automaton has 13 states [2018-06-22 15:54:17,102 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 15:54:17,102 INFO ]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2018-06-22 15:54:17,102 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 15:54:17,504 WARN ]: Spent 340.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2018-06-22 15:54:17,846 WARN ]: Spent 247.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 52 [2018-06-22 15:54:18,230 WARN ]: Spent 360.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2018-06-22 15:54:18,265 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:54:18,265 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 15:54:18,277 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 15:54:18,277 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-22 15:54:18,277 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:54:18,277 INFO ]: With dead ends: 17 [2018-06-22 15:54:18,278 INFO ]: Without dead ends: 17 [2018-06-22 15:54:18,278 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-06-22 15:54:18,278 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 15:54:18,281 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 15:54:18,281 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 15:54:18,281 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 15:54:18,281 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 15:54:18,281 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:54:18,282 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 15:54:18,282 INFO ]: Interpolant automaton has 13 states. [2018-06-22 15:54:18,282 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 15:54:18,282 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 15:54:18,282 INFO ]: Found error trace [2018-06-22 15:54:18,282 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:54:18,282 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:54:18,283 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 15:54:18,283 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:54:18,283 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:54:18,283 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:54:18,283 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:54:18,283 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:54:18,353 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:54:18,854 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 15:54:18,855 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:54:18,855 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 15:54:18,864 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 15:54:18,947 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 15:54:18,947 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:54:18,952 INFO ]: Computing forward predicates... [2018-06-22 15:54:19,739 WARN ]: Spent 210.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2018-06-22 15:54:19,896 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 15:54:19,916 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:54:19,916 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-22 15:54:19,916 INFO ]: Interpolant automaton has 17 states [2018-06-22 15:54:19,916 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 15:54:19,916 INFO ]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2018-06-22 15:54:19,917 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-22 15:54:20,389 WARN ]: Spent 395.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 97 [2018-06-22 15:54:20,684 WARN ]: Spent 252.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 61 [2018-06-22 15:54:21,026 WARN ]: Spent 314.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2018-06-22 15:54:21,626 WARN ]: Spent 571.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2018-06-22 15:54:21,949 WARN ]: Spent 293.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2018-06-22 15:54:21,981 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:54:21,982 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 15:54:21,982 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 15:54:21,982 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-22 15:54:21,982 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:54:21,982 INFO ]: With dead ends: 21 [2018-06-22 15:54:21,982 INFO ]: Without dead ends: 21 [2018-06-22 15:54:21,983 INFO ]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2018-06-22 15:54:21,983 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 15:54:21,985 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 15:54:21,985 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 15:54:21,986 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 15:54:21,986 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 21 [2018-06-22 15:54:21,986 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:54:21,986 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 15:54:21,986 INFO ]: Interpolant automaton has 17 states. [2018-06-22 15:54:21,986 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 15:54:21,987 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 15:54:21,987 INFO ]: Found error trace [2018-06-22 15:54:21,987 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:54:21,987 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:54:21,988 INFO ]: Analyzing trace with hash 853117551, now seen corresponding path program 4 times [2018-06-22 15:54:21,988 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:54:21,988 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:54:21,988 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:54:21,988 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:54:21,988 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:54:22,100 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:54:22,760 WARN ]: Spent 292.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 40 [2018-06-22 15:54:23,428 WARN ]: Spent 546.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 66 [2018-06-22 15:54:23,688 WARN ]: Spent 241.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 40 [2018-06-22 15:54:23,856 WARN ]: Spent 152.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 35 [2018-06-22 15:54:24,287 WARN ]: Spent 281.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 22 [2018-06-22 15:54:24,474 WARN ]: Spent 129.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 29 [2018-06-22 15:54:24,685 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 15:54:24,685 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:54:24,685 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:54:24,698 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 15:54:24,785 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 15:54:24,785 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:54:24,794 INFO ]: Computing forward predicates... [2018-06-22 15:54:27,133 WARN ]: Spent 216.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 25 [2018-06-22 15:54:27,161 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 15:54:27,180 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:54:27,180 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2018-06-22 15:54:27,180 INFO ]: Interpolant automaton has 25 states [2018-06-22 15:54:27,180 INFO ]: Constructing interpolant automaton starting with 25 interpolants. [2018-06-22 15:54:27,181 INFO ]: CoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600 [2018-06-22 15:54:27,181 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 25 states. [2018-06-22 15:54:27,791 WARN ]: Spent 493.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 114 [2018-06-22 15:54:28,295 WARN ]: Spent 450.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 100 [2018-06-22 15:54:28,740 WARN ]: Spent 330.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 106 [2018-06-22 15:54:29,276 WARN ]: Spent 494.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 110 [2018-06-22 15:54:29,846 WARN ]: Spent 513.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 110 [2018-06-22 15:54:29,872 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:54:29,872 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 15:54:29,872 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 15:54:29,872 INFO ]: Start accepts. Automaton has 25 states. Word has length 29 [2018-06-22 15:54:29,873 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:54:29,873 INFO ]: With dead ends: 17 [2018-06-22 15:54:29,873 INFO ]: Without dead ends: 0 [2018-06-22 15:54:29,873 INFO ]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=167, Invalid=763, Unknown=0, NotChecked=0, Total=930 [2018-06-22 15:54:29,873 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 15:54:29,873 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 15:54:29,873 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 15:54:29,873 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 15:54:29,874 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2018-06-22 15:54:29,874 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:54:29,874 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 15:54:29,874 INFO ]: Interpolant automaton has 25 states. [2018-06-22 15:54:29,874 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 15:54:29,874 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 15:54:29,877 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 03:54:29 BoogieIcfgContainer [2018-06-22 15:54:29,877 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 15:54:29,878 INFO ]: Toolchain (without parser) took 18214.64 ms. Allocated memory was 307.2 MB in the beginning and 562.6 MB in the end (delta: 255.3 MB). Free memory was 255.7 MB in the beginning and 424.3 MB in the end (delta: -168.6 MB). Peak memory consumption was 86.7 MB. Max. memory is 3.6 GB. [2018-06-22 15:54:29,879 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 307.2 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 15:54:29,879 INFO ]: ChcToBoogie took 58.97 ms. Allocated memory is still 307.2 MB. Free memory was 255.7 MB in the beginning and 253.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:54:29,879 INFO ]: Boogie Preprocessor took 40.57 ms. Allocated memory is still 307.2 MB. Free memory was 253.7 MB in the beginning and 251.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:54:29,879 INFO ]: RCFGBuilder took 351.25 ms. Allocated memory is still 307.2 MB. Free memory was 251.7 MB in the beginning and 235.7 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:54:29,880 INFO ]: TraceAbstraction took 17744.24 ms. Allocated memory was 307.2 MB in the beginning and 562.6 MB in the end (delta: 255.3 MB). Free memory was 235.7 MB in the beginning and 424.3 MB in the end (delta: -188.6 MB). Peak memory consumption was 66.8 MB. Max. memory is 3.6 GB. [2018-06-22 15:54:29,884 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 307.2 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 58.97 ms. Allocated memory is still 307.2 MB. Free memory was 255.7 MB in the beginning and 253.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 40.57 ms. Allocated memory is still 307.2 MB. Free memory was 253.7 MB in the beginning and 251.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 351.25 ms. Allocated memory is still 307.2 MB. Free memory was 251.7 MB in the beginning and 235.7 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 17744.24 ms. Allocated memory was 307.2 MB in the beginning and 562.6 MB in the end (delta: 255.3 MB). Free memory was 235.7 MB in the beginning and 424.3 MB in the end (delta: -188.6 MB). Peak memory consumption was 66.8 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 3 procedures, 13 locations, 1 error locations. SAFE Result, 17.6s OverallTime, 5 OverallIterations, 6 TraceHistogramMax, 6.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 51 SDtfs, 86 SDslu, 250 SDs, 0 SdLazy, 215 SolverSat, 125 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 12.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 9.9s InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 160 ConstructedInterpolants, 0 QuantifiedInterpolants, 48316 SizeOfPredicates, 177 NumberOfNonLiveVariables, 1812 ConjunctsInSsa, 246 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 50/178 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.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_15-54-29-894.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/car_4_e8_118.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_15-54-29-894.csv Received shutdown request...