java -Xss4m -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/eldarica-misc/LIA/llreve/03_while_unsafe.c-1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 08:52:45,716 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 08:52:45,718 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 08:52:45,731 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 08:52:45,731 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 08:52:45,732 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 08:52:45,736 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 08:52:45,738 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 08:52:45,740 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 08:52:45,742 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 08:52:45,743 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 08:52:45,743 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 08:52:45,744 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 08:52:45,745 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 08:52:45,749 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 08:52:45,750 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 08:52:45,752 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 08:52:45,766 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 08:52:45,767 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 08:52:45,768 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 08:52:45,769 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 08:52:45,772 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 08:52:45,772 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 08:52:45,772 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 08:52:45,773 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 08:52:45,778 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 08:52:45,779 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 08:52:45,780 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 08:52:45,784 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 08:52:45,784 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 08:52:45,785 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 08:52:45,786 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 08:52:45,786 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 08:52:45,787 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 08:52:45,788 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 08:52:45,788 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 08:52:45,814 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 08:52:45,815 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 08:52:45,815 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 08:52:45,815 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 08:52:45,816 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 08:52:45,816 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 08:52:45,816 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 08:52:45,817 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 08:52:45,817 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 08:52:45,817 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 08:52:45,817 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 08:52:45,817 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 08:52:45,818 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 08:52:45,819 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 08:52:45,819 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 08:52:45,819 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 08:52:45,820 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 08:52:45,820 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 08:52:45,820 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 08:52:45,820 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 08:52:45,820 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 08:52:45,822 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 08:52:45,822 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 08:52:45,873 INFO ]: Repository-Root is: /tmp [2018-06-25 08:52:45,890 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 08:52:45,896 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 08:52:45,897 INFO ]: Initializing SmtParser... [2018-06-25 08:52:45,898 INFO ]: SmtParser initialized [2018-06-25 08:52:45,898 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/llreve/03_while_unsafe.c-1.smt2 [2018-06-25 08:52:45,900 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 [2018-06-25 08:52:45,989 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/03_while_unsafe.c-1.smt2 unknown [2018-06-25 08:52:46,177 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/03_while_unsafe.c-1.smt2 [2018-06-25 08:52:46,181 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 08:52:46,186 INFO ]: Walking toolchain with 4 elements. [2018-06-25 08:52:46,186 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 08:52:46,186 INFO ]: Initializing ChcToBoogie... [2018-06-25 08:52:46,186 INFO ]: ChcToBoogie initialized [2018-06-25 08:52:46,190 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 08:52:46" (1/1) ... [2018-06-25 08:52:46,249 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:52:46 Unit [2018-06-25 08:52:46,249 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 08:52:46,249 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 08:52:46,249 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 08:52:46,250 INFO ]: Boogie Preprocessor initialized [2018-06-25 08:52:46,270 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:52:46" (1/1) ... [2018-06-25 08:52:46,270 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:52:46" (1/1) ... [2018-06-25 08:52:46,277 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:52:46" (1/1) ... [2018-06-25 08:52:46,277 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:52:46" (1/1) ... [2018-06-25 08:52:46,281 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:52:46" (1/1) ... [2018-06-25 08:52:46,283 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:52:46" (1/1) ... [2018-06-25 08:52:46,292 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:52:46" (1/1) ... [2018-06-25 08:52:46,294 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 08:52:46,295 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 08:52:46,295 INFO ]: Initializing RCFGBuilder... [2018-06-25 08:52:46,295 INFO ]: RCFGBuilder initialized [2018-06-25 08:52:46,296 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:52:46" (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) [2018-06-25 08:52:46,311 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 08:52:46,311 INFO ]: Found specification of procedure gotoProc [2018-06-25 08:52:46,311 INFO ]: Found implementation of procedure gotoProc [2018-06-25 08:52:46,311 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 08:52:46,311 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 08:52:46,311 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 [2018-06-25 08:52:46,576 INFO ]: Using library mode [2018-06-25 08:52:46,576 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 08:52:46 BoogieIcfgContainer [2018-06-25 08:52:46,576 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 08:52:46,578 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 08:52:46,578 INFO ]: Initializing TraceAbstraction... [2018-06-25 08:52:46,593 INFO ]: TraceAbstraction initialized [2018-06-25 08:52:46,593 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 08:52:46" (1/3) ... [2018-06-25 08:52:46,594 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd3e1b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 08:52:46, skipping insertion in model container [2018-06-25 08:52:46,594 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:52:46" (2/3) ... [2018-06-25 08:52:46,594 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd3e1b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 08:52:46, skipping insertion in model container [2018-06-25 08:52:46,594 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 08:52:46" (3/3) ... [2018-06-25 08:52:46,596 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 08:52:46,613 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 08:52:46,624 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 08:52:46,659 INFO ]: Using default assertion order modulation [2018-06-25 08:52:46,659 INFO ]: Interprodecural is true [2018-06-25 08:52:46,659 INFO ]: Hoare is false [2018-06-25 08:52:46,659 INFO ]: Compute interpolants for FPandBP [2018-06-25 08:52:46,659 INFO ]: Backedges is TWOTRACK [2018-06-25 08:52:46,659 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 08:52:46,659 INFO ]: Difference is false [2018-06-25 08:52:46,659 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 08:52:46,660 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 08:52:46,671 INFO ]: Start isEmpty. Operand 13 states. [2018-06-25 08:52:46,681 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 08:52:46,682 INFO ]: Found error trace [2018-06-25 08:52:46,683 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:52:46,683 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:52:46,686 INFO ]: Analyzing trace with hash 764877710, now seen corresponding path program 1 times [2018-06-25 08:52:46,688 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:52:46,688 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:52:46,719 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:52:46,719 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:52:46,719 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:52:46,765 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:52:46,866 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:52:46,868 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:52:46,869 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-25 08:52:46,870 INFO ]: Interpolant automaton has 5 states [2018-06-25 08:52:46,881 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 08:52:46,882 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-25 08:52:46,884 INFO ]: Start difference. First operand 13 states. Second operand 5 states. [2018-06-25 08:52:47,042 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:52:47,042 INFO ]: Finished difference Result 17 states and 20 transitions. [2018-06-25 08:52:47,043 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 08:52:47,044 INFO ]: Start accepts. Automaton has 5 states. Word has length 10 [2018-06-25 08:52:47,044 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:52:47,057 INFO ]: With dead ends: 17 [2018-06-25 08:52:47,057 INFO ]: Without dead ends: 17 [2018-06-25 08:52:47,064 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-25 08:52:47,077 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-25 08:52:47,090 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 13. [2018-06-25 08:52:47,091 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-25 08:52:47,091 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2018-06-25 08:52:47,093 INFO ]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2018-06-25 08:52:47,093 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:52:47,093 INFO ]: Abstraction has 13 states and 15 transitions. [2018-06-25 08:52:47,093 INFO ]: Interpolant automaton has 5 states. [2018-06-25 08:52:47,093 INFO ]: Start isEmpty. Operand 13 states and 15 transitions. [2018-06-25 08:52:47,093 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-25 08:52:47,093 INFO ]: Found error trace [2018-06-25 08:52:47,093 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:52:47,093 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:52:47,094 INFO ]: Analyzing trace with hash -2005065960, now seen corresponding path program 1 times [2018-06-25 08:52:47,094 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:52:47,094 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:52:47,095 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:52:47,095 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:52:47,095 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:52:47,122 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:52:47,430 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:52:47,431 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:52:47,431 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 [2018-06-25 08:52:47,439 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:52:47,493 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:52:47,503 INFO ]: Computing forward predicates... [2018-06-25 08:52:47,628 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:52:47,661 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-25 08:52:47,661 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2018-06-25 08:52:47,662 INFO ]: Interpolant automaton has 6 states [2018-06-25 08:52:47,662 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-25 08:52:47,662 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-25 08:52:47,662 INFO ]: Start difference. First operand 13 states and 15 transitions. Second operand 6 states. [2018-06-25 08:52:47,769 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:52:47,769 INFO ]: Finished difference Result 14 states and 16 transitions. [2018-06-25 08:52:47,770 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 08:52:47,770 INFO ]: Start accepts. Automaton has 6 states. Word has length 11 [2018-06-25 08:52:47,770 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:52:47,770 INFO ]: With dead ends: 14 [2018-06-25 08:52:47,770 INFO ]: Without dead ends: 12 [2018-06-25 08:52:47,771 INFO ]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-06-25 08:52:47,771 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-25 08:52:47,773 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-25 08:52:47,773 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-25 08:52:47,773 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2018-06-25 08:52:47,773 INFO ]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 11 [2018-06-25 08:52:47,773 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:52:47,773 INFO ]: Abstraction has 12 states and 13 transitions. [2018-06-25 08:52:47,773 INFO ]: Interpolant automaton has 6 states. [2018-06-25 08:52:47,773 INFO ]: Start isEmpty. Operand 12 states and 13 transitions. [2018-06-25 08:52:47,774 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-25 08:52:47,774 INFO ]: Found error trace [2018-06-25 08:52:47,774 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:52:47,774 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:52:47,774 INFO ]: Analyzing trace with hash -459091806, now seen corresponding path program 1 times [2018-06-25 08:52:47,774 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:52:47,774 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:52:47,775 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:52:47,775 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:52:47,775 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:52:47,789 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:52:47,866 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:52:47,866 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:52:47,866 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 08:52:47,867 INFO ]: Interpolant automaton has 4 states [2018-06-25 08:52:47,867 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 08:52:47,867 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 08:52:47,867 INFO ]: Start difference. First operand 12 states and 13 transitions. Second operand 4 states. [2018-06-25 08:52:47,934 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:52:47,934 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-25 08:52:47,935 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 08:52:47,935 INFO ]: Start accepts. Automaton has 4 states. Word has length 11 [2018-06-25 08:52:47,935 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:52:47,936 INFO ]: With dead ends: 13 [2018-06-25 08:52:47,936 INFO ]: Without dead ends: 13 [2018-06-25 08:52:47,936 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 08:52:47,936 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-25 08:52:47,938 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-25 08:52:47,938 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-25 08:52:47,938 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-25 08:52:47,938 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2018-06-25 08:52:47,938 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:52:47,938 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-25 08:52:47,938 INFO ]: Interpolant automaton has 4 states. [2018-06-25 08:52:47,938 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-25 08:52:47,939 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-25 08:52:47,939 INFO ]: Found error trace [2018-06-25 08:52:47,939 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:52:47,939 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:52:47,939 INFO ]: Analyzing trace with hash -1293415292, now seen corresponding path program 1 times [2018-06-25 08:52:47,939 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:52:47,939 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:52:47,940 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:52:47,940 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:52:47,940 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:52:47,966 INFO ]: Conjunction of SSA is sat [2018-06-25 08:52:47,969 INFO ]: Counterexample might be feasible [2018-06-25 08:52:47,983 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 08:52:47 BoogieIcfgContainer [2018-06-25 08:52:47,983 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 08:52:47,984 INFO ]: Toolchain (without parser) took 1802.60 ms. Allocated memory is still 299.4 MB. Free memory was 253.7 MB in the beginning and 195.3 MB in the end (delta: 58.4 MB). Peak memory consumption was 58.4 MB. Max. memory is 3.6 GB. [2018-06-25 08:52:47,985 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 299.4 MB. Free memory is still 263.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 08:52:47,986 INFO ]: ChcToBoogie took 62.93 ms. Allocated memory is still 299.4 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. [2018-06-25 08:52:47,986 INFO ]: Boogie Preprocessor took 44.92 ms. Allocated memory is still 299.4 MB. Free memory is still 251.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 08:52:47,986 INFO ]: RCFGBuilder took 281.30 ms. Allocated memory is still 299.4 MB. Free memory was 251.7 MB in the beginning and 241.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-25 08:52:47,987 INFO ]: TraceAbstraction took 1404.74 ms. Allocated memory is still 299.4 MB. Free memory was 241.8 MB in the beginning and 195.3 MB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 3.6 GB. [2018-06-25 08:52:47,989 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 299.4 MB. Free memory is still 263.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 62.93 ms. Allocated memory is still 299.4 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. * Boogie Preprocessor took 44.92 ms. Allocated memory is still 299.4 MB. Free memory is still 251.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * RCFGBuilder took 281.30 ms. Allocated memory is still 299.4 MB. Free memory was 251.7 MB in the beginning and 241.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1404.74 ms. Allocated memory is still 299.4 MB. Free memory was 241.8 MB in the beginning and 195.3 MB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [UNKNOWN] : assertion can be violated assertion can be violated We found a FailurePath: [L0] CALL call gotoProc(0, 0, 0, 0, 0, 0, 0, 0, 0); [L0] gotoSwitch := gotoSwitch_in; [L0] assume !(hbv_False_1_Int == hbv_False_2_Int); [L0] hhv_inv_main31_0_Int, hhv_inv_main31_1_Int, hhv_inv_main31_2_Int, hhv_inv_main31_3_Int := hbv_False_3_Int, hbv_False_4_Int, hbv_False_1_Int, hbv_False_2_Int; [L0] havoc hbv_False_2_Int, hbv_False_1_Int, hbv_False_4_Int, hbv_False_3_Int; [L0] assume !(0 <= hbv_inv_main31_1_Int + -1 * hbv_inv_main31_2_Int + -1); [L0] hhv_inv_main26_0_Int, hhv_inv_main26_1_Int, hhv_inv_main26_2_Int, hhv_inv_main26_3_Int, hhv_inv_main26_4_Int, hhv_inv_main26_5_Int, hhv_inv_main26_6_Int, hhv_inv_main26_7_Int := hhv_inv_main31_0_Int, hhv_inv_main31_1_Int, hhv_inv_main31_2_Int, hbv_inv_main31_1_Int, hbv_inv_main31_3_Int, hbv_inv_main31_2_Int, hbv_inv_main31_4_Int, hhv_inv_main31_3_Int; [L0] havoc hbv_inv_main31_4_Int, hbv_inv_main31_1_Int, hbv_inv_main31_3_Int, hbv_inv_main31_2_Int; [L0] assume ((hhv_inv_main26_7_Int == hbv_inv_main26_2_Int + hbv_inv_main26_3_Int && hhv_inv_main26_5_Int == hbv_inv_main26_1_Int + 1) && hhv_inv_main26_6_Int == hbv_inv_main26_3_Int + 5) && 0 <= hhv_inv_main26_3_Int + -1 * hbv_inv_main26_1_Int + -1; [L0] hhv_inv_main26_0_Int, hhv_inv_main26_1_Int, hhv_inv_main26_2_Int, hhv_inv_main26_3_Int, hhv_inv_main26_4_Int, hhv_inv_main26_5_Int, hhv_inv_main26_6_Int, hhv_inv_main26_7_Int := hhv_inv_main26_0_Int, hhv_inv_main26_1_Int, hhv_inv_main26_2_Int, hhv_inv_main26_3_Int, hhv_inv_main26_4_Int, hbv_inv_main26_1_Int, hbv_inv_main26_3_Int, hbv_inv_main26_2_Int; [L0] havoc hbv_inv_main26_3_Int, hbv_inv_main26_2_Int, hbv_inv_main26_1_Int; [L0] assume ((((hhv_inv_main26_3_Int == hhv_inv_main26_0_Int && hhv_inv_main26_6_Int == 0) && hhv_inv_main26_7_Int == 0) && hhv_inv_main26_5_Int == 0) && hhv_inv_main26_4_Int == hhv_inv_main26_1_Int) && !(0 <= hbv_inv_main26_1_Int + -1 * hbv_inv_main26_2_Int + -1); [L0] hhv_inv_main12_0_Int, hhv_inv_main12_1_Int, hhv_inv_main12_2_Int, hhv_inv_main12_3_Int, hhv_inv_main12_4_Int, hhv_inv_main12_5_Int, hhv_inv_main12_6_Int := hhv_inv_main26_0_Int, hhv_inv_main26_1_Int, hbv_inv_main26_1_Int, hbv_inv_main26_3_Int, hbv_inv_main26_2_Int, hbv_inv_main26_4_Int, hhv_inv_main26_2_Int; [L0] havoc hbv_inv_main26_4_Int, hbv_inv_main26_3_Int, hbv_inv_main26_2_Int, hbv_inv_main26_1_Int; [L0] assume ((hhv_inv_main12_6_Int == hbv_inv_main12_2_Int + (5 * hbv_inv_main12_1_Int + hhv_inv_main12_3_Int) && hhv_inv_main12_4_Int == hbv_inv_main12_1_Int + 1) && 0 <= hhv_inv_main12_2_Int + -1 * hbv_inv_main12_1_Int + -1) && hhv_inv_main12_5_Int == 5 * hbv_inv_main12_1_Int + hhv_inv_main12_3_Int; [L0] hhv_inv_main12_0_Int, hhv_inv_main12_1_Int, hhv_inv_main12_2_Int, hhv_inv_main12_3_Int, hhv_inv_main12_4_Int, hhv_inv_main12_5_Int, hhv_inv_main12_6_Int := hhv_inv_main12_0_Int, hhv_inv_main12_1_Int, hhv_inv_main12_2_Int, hhv_inv_main12_3_Int, hbv_inv_main12_1_Int, hbv_inv_main12_3_Int, hbv_inv_main12_2_Int; [L0] havoc hbv_inv_main12_1_Int, hbv_inv_main12_3_Int, hbv_inv_main12_2_Int; [L0] assume (((hhv_inv_main12_4_Int == 0 && hhv_inv_main12_5_Int == 0) && hhv_inv_main12_6_Int == 0) && hhv_inv_main12_2_Int == hhv_inv_main12_0_Int) && hhv_inv_main12_3_Int == hhv_inv_main12_1_Int; [L0] hhv_inv_main3_0_Int, hhv_inv_main3_1_Int := hhv_inv_main12_0_Int, hhv_inv_main12_1_Int; [L0] assume true; [L0] RET call gotoProc(0, 0, 0, 0, 0, 0, 0, 0, 0); [L0] assert false; - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 13 locations, 1 error locations. UNSAFE Result, 1.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 27 SDtfs, 23 SDslu, 59 SDs, 0 SdLazy, 32 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 822 SizeOfPredicates, 6 NumberOfNonLiveVariables, 114 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 2/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/03_while_unsafe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_08-52-48-000.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/03_while_unsafe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_08-52-48-000.csv Received shutdown request...