java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/Consistency/point-location.45.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 00:51:09,137 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 00:51:09,139 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 00:51:09,151 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 00:51:09,152 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 00:51:09,152 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 00:51:09,153 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 00:51:09,156 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 00:51:09,158 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 00:51:09,158 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 00:51:09,160 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 00:51:09,160 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 00:51:09,161 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 00:51:09,162 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 00:51:09,163 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 00:51:09,163 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 00:51:09,167 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 00:51:09,168 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 00:51:09,177 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 00:51:09,178 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 00:51:09,179 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 00:51:09,186 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 00:51:09,186 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 00:51:09,187 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 00:51:09,187 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 00:51:09,188 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 00:51:09,189 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 00:51:09,190 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 00:51:09,190 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 00:51:09,191 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 00:51:09,196 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 00:51:09,197 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 00:51:09,197 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 00:51:09,198 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 00:51:09,198 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 00:51:09,199 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 00:51:09,219 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 00:51:09,219 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 00:51:09,221 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 00:51:09,221 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 00:51:09,222 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 00:51:09,222 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 00:51:09,222 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 00:51:09,223 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 00:51:09,223 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 00:51:09,223 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 00:51:09,223 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 00:51:09,223 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 00:51:09,223 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 00:51:09,224 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 00:51:09,224 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 00:51:09,224 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 00:51:09,224 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 00:51:09,228 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 00:51:09,228 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 00:51:09,281 INFO ]: Repository-Root is: /tmp [2018-06-22 00:51:09,294 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 00:51:09,300 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 00:51:09,301 INFO ]: Initializing SmtParser... [2018-06-22 00:51:09,301 INFO ]: SmtParser initialized [2018-06-22 00:51:09,302 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/Consistency/point-location.45.smt2 [2018-06-22 00:51:09,303 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 00:51:09,391 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/point-location.45.smt2 unknown [2018-06-22 00:51:09,787 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/point-location.45.smt2 [2018-06-22 00:51:09,791 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 00:51:09,797 INFO ]: Walking toolchain with 4 elements. [2018-06-22 00:51:09,797 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 00:51:09,797 INFO ]: Initializing ChcToBoogie... [2018-06-22 00:51:09,797 INFO ]: ChcToBoogie initialized [2018-06-22 00:51:09,801 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:51:09" (1/1) ... [2018-06-22 00:51:09,903 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:51:09 Unit [2018-06-22 00:51:09,903 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 00:51:09,904 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 00:51:09,904 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 00:51:09,904 INFO ]: Boogie Preprocessor initialized [2018-06-22 00:51:09,925 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:51:09" (1/1) ... [2018-06-22 00:51:09,925 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:51:09" (1/1) ... [2018-06-22 00:51:09,943 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:51:09" (1/1) ... [2018-06-22 00:51:09,944 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:51:09" (1/1) ... [2018-06-22 00:51:09,956 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:51:09" (1/1) ... [2018-06-22 00:51:09,960 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:51:09" (1/1) ... [2018-06-22 00:51:09,964 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:51:09" (1/1) ... [2018-06-22 00:51:09,967 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 00:51:09,968 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 00:51:09,968 INFO ]: Initializing RCFGBuilder... [2018-06-22 00:51:09,968 INFO ]: RCFGBuilder initialized [2018-06-22 00:51:09,969 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:51:09" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 00:51:09,996 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 00:51:09,996 INFO ]: Found specification of procedure gotoProc [2018-06-22 00:51:09,996 INFO ]: Found implementation of procedure gotoProc [2018-06-22 00:51:09,996 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 00:51:09,996 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 00:51:09,996 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 00:51:11,214 INFO ]: Using library mode [2018-06-22 00:51:11,215 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:51:11 BoogieIcfgContainer [2018-06-22 00:51:11,215 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 00:51:11,216 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 00:51:11,216 INFO ]: Initializing TraceAbstraction... [2018-06-22 00:51:11,222 INFO ]: TraceAbstraction initialized [2018-06-22 00:51:11,223 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:51:09" (1/3) ... [2018-06-22 00:51:11,224 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523a8d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 12:51:11, skipping insertion in model container [2018-06-22 00:51:11,224 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:51:09" (2/3) ... [2018-06-22 00:51:11,224 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523a8d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 12:51:11, skipping insertion in model container [2018-06-22 00:51:11,224 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:51:11" (3/3) ... [2018-06-22 00:51:11,226 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 00:51:11,235 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 00:51:11,244 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 00:51:11,295 INFO ]: Using default assertion order modulation [2018-06-22 00:51:11,296 INFO ]: Interprodecural is true [2018-06-22 00:51:11,296 INFO ]: Hoare is false [2018-06-22 00:51:11,296 INFO ]: Compute interpolants for FPandBP [2018-06-22 00:51:11,296 INFO ]: Backedges is TWOTRACK [2018-06-22 00:51:11,296 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 00:51:11,296 INFO ]: Difference is false [2018-06-22 00:51:11,296 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 00:51:11,296 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 00:51:11,315 INFO ]: Start isEmpty. Operand 147 states. [2018-06-22 00:51:11,338 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 00:51:11,338 INFO ]: Found error trace [2018-06-22 00:51:11,339 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:51:11,339 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:51:11,343 INFO ]: Analyzing trace with hash 1348620856, now seen corresponding path program 1 times [2018-06-22 00:51:11,345 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:51:11,345 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:51:11,379 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:51:11,379 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:51:11,379 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:51:11,481 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:51:11,762 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:51:11,764 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:51:11,764 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 00:51:11,765 INFO ]: Interpolant automaton has 4 states [2018-06-22 00:51:11,776 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 00:51:11,776 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 00:51:11,778 INFO ]: Start difference. First operand 147 states. Second operand 4 states. [2018-06-22 00:51:14,763 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:51:14,763 INFO ]: Finished difference Result 287 states and 553 transitions. [2018-06-22 00:51:14,764 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 00:51:14,765 INFO ]: Start accepts. Automaton has 4 states. Word has length 7 [2018-06-22 00:51:14,765 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:51:14,812 INFO ]: With dead ends: 287 [2018-06-22 00:51:14,812 INFO ]: Without dead ends: 281 [2018-06-22 00:51:14,814 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 00:51:14,833 INFO ]: Start minimizeSevpa. Operand 281 states. [2018-06-22 00:51:14,968 INFO ]: Finished minimizeSevpa. Reduced states from 281 to 281. [2018-06-22 00:51:14,969 INFO ]: Start removeUnreachable. Operand 281 states. [2018-06-22 00:51:14,996 INFO ]: Finished removeUnreachable. Reduced from 281 states to 281 states and 541 transitions. [2018-06-22 00:51:14,997 INFO ]: Start accepts. Automaton has 281 states and 541 transitions. Word has length 7 [2018-06-22 00:51:14,998 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:51:14,998 INFO ]: Abstraction has 281 states and 541 transitions. [2018-06-22 00:51:14,998 INFO ]: Interpolant automaton has 4 states. [2018-06-22 00:51:14,998 INFO ]: Start isEmpty. Operand 281 states and 541 transitions. [2018-06-22 00:51:15,005 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 00:51:15,005 INFO ]: Found error trace [2018-06-22 00:51:15,005 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:51:15,005 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:51:15,005 INFO ]: Analyzing trace with hash -2144567482, now seen corresponding path program 1 times [2018-06-22 00:51:15,005 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:51:15,005 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:51:15,006 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:51:15,006 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:51:15,006 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:51:15,013 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:51:15,180 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:51:15,180 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:51:15,180 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 00:51:15,182 INFO ]: Interpolant automaton has 4 states [2018-06-22 00:51:15,182 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 00:51:15,182 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 00:51:15,182 INFO ]: Start difference. First operand 281 states and 541 transitions. Second operand 4 states. [2018-06-22 00:51:17,147 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:51:17,147 INFO ]: Finished difference Result 420 states and 810 transitions. [2018-06-22 00:51:17,147 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 00:51:17,147 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 00:51:17,147 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:51:17,179 INFO ]: With dead ends: 420 [2018-06-22 00:51:17,179 INFO ]: Without dead ends: 420 [2018-06-22 00:51:17,180 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 00:51:17,181 INFO ]: Start minimizeSevpa. Operand 420 states. [2018-06-22 00:51:17,262 INFO ]: Finished minimizeSevpa. Reduced states from 420 to 420. [2018-06-22 00:51:17,262 INFO ]: Start removeUnreachable. Operand 420 states. [2018-06-22 00:51:17,287 INFO ]: Finished removeUnreachable. Reduced from 420 states to 420 states and 810 transitions. [2018-06-22 00:51:17,287 INFO ]: Start accepts. Automaton has 420 states and 810 transitions. Word has length 9 [2018-06-22 00:51:17,287 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:51:17,287 INFO ]: Abstraction has 420 states and 810 transitions. [2018-06-22 00:51:17,287 INFO ]: Interpolant automaton has 4 states. [2018-06-22 00:51:17,287 INFO ]: Start isEmpty. Operand 420 states and 810 transitions. [2018-06-22 00:51:17,316 INFO ]: Finished isEmpty. Found accepting run of length 20 [2018-06-22 00:51:17,316 INFO ]: Found error trace [2018-06-22 00:51:17,316 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:51:17,316 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:51:17,316 INFO ]: Analyzing trace with hash 950038671, now seen corresponding path program 1 times [2018-06-22 00:51:17,316 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:51:17,316 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:51:17,317 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:51:17,317 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:51:17,317 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:51:17,367 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:51:17,492 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 00:51:17,492 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 00:51:17,492 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 00:51:17,510 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:51:17,585 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:51:17,601 INFO ]: Computing forward predicates... [2018-06-22 00:51:17,868 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 00:51:17,892 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 00:51:17,892 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-06-22 00:51:17,892 INFO ]: Interpolant automaton has 12 states [2018-06-22 00:51:17,892 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 00:51:17,892 INFO ]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-06-22 00:51:17,893 INFO ]: Start difference. First operand 420 states and 810 transitions. Second operand 12 states. [2018-06-22 00:51:49,343 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:51:49,343 INFO ]: Finished difference Result 6316 states and 29445 transitions. [2018-06-22 00:51:49,344 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-06-22 00:51:49,344 INFO ]: Start accepts. Automaton has 12 states. Word has length 19 [2018-06-22 00:51:49,344 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:51:52,413 INFO ]: With dead ends: 6316 [2018-06-22 00:51:52,413 INFO ]: Without dead ends: 5763 [2018-06-22 00:51:52,415 INFO ]: 0 DeclaredPredicates, 82 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1531 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=509, Invalid=4183, Unknown=0, NotChecked=0, Total=4692 [2018-06-22 00:51:52,419 INFO ]: Start minimizeSevpa. Operand 5763 states. [2018-06-22 00:51:55,206 INFO ]: Finished minimizeSevpa. Reduced states from 5763 to 1879. [2018-06-22 00:51:55,206 INFO ]: Start removeUnreachable. Operand 1879 states. [2018-06-22 00:51:55,410 INFO ]: Finished removeUnreachable. Reduced from 1879 states to 1879 states and 4106 transitions. [2018-06-22 00:51:55,410 INFO ]: Start accepts. Automaton has 1879 states and 4106 transitions. Word has length 19 [2018-06-22 00:51:55,410 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:51:55,410 INFO ]: Abstraction has 1879 states and 4106 transitions. [2018-06-22 00:51:55,410 INFO ]: Interpolant automaton has 12 states. [2018-06-22 00:51:55,410 INFO ]: Start isEmpty. Operand 1879 states and 4106 transitions. [2018-06-22 00:51:55,448 INFO ]: Finished isEmpty. Found accepting run of length 21 [2018-06-22 00:51:55,448 INFO ]: Found error trace [2018-06-22 00:51:55,448 INFO ]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:51:55,448 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:51:55,449 INFO ]: Analyzing trace with hash -494845317, now seen corresponding path program 1 times [2018-06-22 00:51:55,449 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:51:55,449 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:51:55,450 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:51:55,450 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:51:55,450 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:51:55,504 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:51:56,020 INFO ]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 00:51:56,020 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 00:51:56,020 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 00:51:56,026 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:51:56,069 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:51:56,072 INFO ]: Computing forward predicates... [2018-06-22 00:51:56,090 INFO ]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 00:51:56,110 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 00:51:56,110 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-06-22 00:51:56,111 INFO ]: Interpolant automaton has 9 states [2018-06-22 00:51:56,111 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 00:51:56,111 INFO ]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-06-22 00:51:56,112 INFO ]: Start difference. First operand 1879 states and 4106 transitions. Second operand 9 states. [2018-06-22 00:52:06,312 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:52:06,312 INFO ]: Finished difference Result 6923 states and 38152 transitions. [2018-06-22 00:52:06,353 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-06-22 00:52:06,353 INFO ]: Start accepts. Automaton has 9 states. Word has length 20 [2018-06-22 00:52:06,353 INFO ]: Finished accepts. some prefix is accepted. Received shutdown request... [2018-06-22 00:52:16,052 INFO ]: With dead ends: 6923 [2018-06-22 00:52:16,052 INFO ]: Without dead ends: 6923 [2018-06-22 00:52:16,052 INFO ]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2018-06-22 00:52:16,055 INFO ]: Start minimizeSevpa. Operand 6923 states. [2018-06-22 00:52:16,055 WARN ]: Verification canceled [2018-06-22 00:52:16,059 WARN ]: Timeout [2018-06-22 00:52:16,059 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 12:52:16 BoogieIcfgContainer [2018-06-22 00:52:16,059 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 00:52:16,059 INFO ]: Toolchain (without parser) took 66267.57 ms. Allocated memory was 306.7 MB in the beginning and 2.0 GB in the end (delta: 1.7 GB). Free memory was 253.1 MB in the beginning and 1.1 GB in the end (delta: -849.0 MB). Peak memory consumption was 1.6 GB. Max. memory is 3.6 GB. [2018-06-22 00:52:16,061 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 00:52:16,061 INFO ]: ChcToBoogie took 106.10 ms. Allocated memory is still 306.7 MB. Free memory was 252.1 MB in the beginning and 249.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 00:52:16,061 INFO ]: Boogie Preprocessor took 63.76 ms. Allocated memory is still 306.7 MB. Free memory was 249.1 MB in the beginning and 247.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 00:52:16,062 INFO ]: RCFGBuilder took 1246.86 ms. Allocated memory was 306.7 MB in the beginning and 325.6 MB in the end (delta: 18.9 MB). Free memory was 246.1 MB in the beginning and 294.4 MB in the end (delta: -48.2 MB). Peak memory consumption was 67.5 MB. Max. memory is 3.6 GB. [2018-06-22 00:52:16,063 INFO ]: TraceAbstraction took 64842.56 ms. Allocated memory was 325.6 MB in the beginning and 2.0 GB in the end (delta: 1.6 GB). Free memory was 292.9 MB in the beginning and 1.1 GB in the end (delta: -809.3 MB). Peak memory consumption was 1.7 GB. Max. memory is 3.6 GB. [2018-06-22 00:52:16,066 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 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 106.10 ms. Allocated memory is still 306.7 MB. Free memory was 252.1 MB in the beginning and 249.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 63.76 ms. Allocated memory is still 306.7 MB. Free memory was 249.1 MB in the beginning and 247.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 1246.86 ms. Allocated memory was 306.7 MB in the beginning and 325.6 MB in the end (delta: 18.9 MB). Free memory was 246.1 MB in the beginning and 294.4 MB in the end (delta: -48.2 MB). Peak memory consumption was 67.5 MB. Max. memory is 3.6 GB. * TraceAbstraction took 64842.56 ms. Allocated memory was 325.6 MB in the beginning and 2.0 GB in the end (delta: 1.6 GB). Free memory was 292.9 MB in the beginning and 1.1 GB in the end (delta: -809.3 MB). Peak memory consumption was 1.7 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 executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 147 locations, 1 error locations. TIMEOUT Result, 64.7s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 59.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6613 SDtfs, 1709 SDslu, 32401 SDs, 0 SdLazy, 29934 SolverSat, 9997 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 35.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 132 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1612 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1879occurred 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: 3.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 3884 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 2502 SizeOfPredicates, 6 NumberOfNonLiveVariables, 873 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 18/22 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/point-location.45.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_00-52-16-081.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/point-location.45.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_00-52-16-081.csv Completed graceful shutdown