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/hopv/lia/mochi/sum_cps.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:51:59,985 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:51:59,986 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:51:59,998 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:51:59,999 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:52:00,000 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:52:00,004 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:52:00,006 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:52:00,009 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:52:00,010 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:52:00,011 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:52:00,011 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:52:00,012 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:52:00,016 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:52:00,017 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:52:00,018 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:52:00,031 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:52:00,033 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:52:00,035 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:52:00,036 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:52:00,037 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:52:00,039 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 01:52:00,039 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 01:52:00,039 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 01:52:00,045 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 01:52:00,046 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 01:52:00,046 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 01:52:00,047 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 01:52:00,054 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 01:52:00,054 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:52:00,055 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:52:00,056 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:52:00,056 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:52:00,057 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:52:00,058 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:52:00,058 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:52:00,078 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:52:00,079 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:52:00,079 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:52:00,079 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:52:00,084 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:52:00,084 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:52:00,084 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:52:00,085 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:52:00,085 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:52:00,085 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:52:00,085 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:52:00,085 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:52:00,086 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:52:00,086 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:52:00,086 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:52:00,086 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:52:00,086 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:52:00,089 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:52:00,089 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:52:00,152 INFO ]: Repository-Root is: /tmp [2018-06-22 01:52:00,169 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:52:00,174 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:52:00,176 INFO ]: Initializing SmtParser... [2018-06-22 01:52:00,176 INFO ]: SmtParser initialized [2018-06-22 01:52:00,177 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/sum_cps.smt2 [2018-06-22 01:52:00,179 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 01:52:00,274 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/sum_cps.smt2 unknown [2018-06-22 01:52:00,526 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/sum_cps.smt2 [2018-06-22 01:52:00,533 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:52:00,538 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:52:00,539 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:52:00,539 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:52:00,539 INFO ]: ChcToBoogie initialized [2018-06-22 01:52:00,542 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:52:00" (1/1) ... [2018-06-22 01:52:00,600 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:52:00 Unit [2018-06-22 01:52:00,600 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:52:00,601 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:52:00,601 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:52:00,601 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:52:00,623 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:52:00" (1/1) ... [2018-06-22 01:52:00,623 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:52:00" (1/1) ... [2018-06-22 01:52:00,629 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:52:00" (1/1) ... [2018-06-22 01:52:00,629 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:52:00" (1/1) ... [2018-06-22 01:52:00,634 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:52:00" (1/1) ... [2018-06-22 01:52:00,637 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:52:00" (1/1) ... [2018-06-22 01:52:00,638 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:52:00" (1/1) ... [2018-06-22 01:52:00,640 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:52:00,640 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:52:00,640 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:52:00,640 INFO ]: RCFGBuilder initialized [2018-06-22 01:52:00,641 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:52:00" (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 01:52:00,653 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:52:00,653 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:52:00,653 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:52:00,653 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:52:00,653 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:52:00,653 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 01:52:00,942 INFO ]: Using library mode [2018-06-22 01:52:00,952 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:52:00 BoogieIcfgContainer [2018-06-22 01:52:00,952 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:52:00,953 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:52:00,953 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:52:00,956 INFO ]: TraceAbstraction initialized [2018-06-22 01:52:00,956 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:52:00" (1/3) ... [2018-06-22 01:52:00,957 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d38026f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:52:00, skipping insertion in model container [2018-06-22 01:52:00,957 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:52:00" (2/3) ... [2018-06-22 01:52:00,957 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d38026f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:52:00, skipping insertion in model container [2018-06-22 01:52:00,957 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:52:00" (3/3) ... [2018-06-22 01:52:00,960 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:52:00,969 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:52:00,981 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:52:01,020 INFO ]: Using default assertion order modulation [2018-06-22 01:52:01,021 INFO ]: Interprodecural is true [2018-06-22 01:52:01,021 INFO ]: Hoare is false [2018-06-22 01:52:01,021 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:52:01,021 INFO ]: Backedges is TWOTRACK [2018-06-22 01:52:01,021 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:52:01,021 INFO ]: Difference is false [2018-06-22 01:52:01,021 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:52:01,021 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:52:01,037 INFO ]: Start isEmpty. Operand 19 states. [2018-06-22 01:52:01,046 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 01:52:01,046 INFO ]: Found error trace [2018-06-22 01:52:01,047 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:52:01,047 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:52:01,051 INFO ]: Analyzing trace with hash -1265347672, now seen corresponding path program 1 times [2018-06-22 01:52:01,053 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:52:01,053 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:52:01,087 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:52:01,087 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:52:01,087 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:52:01,119 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:52:01,217 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:52:01,219 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:52:01,219 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:52:01,221 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:52:01,234 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:52:01,234 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:52:01,237 INFO ]: Start difference. First operand 19 states. Second operand 4 states. [2018-06-22 01:52:01,417 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:52:01,417 INFO ]: Finished difference Result 31 states and 39 transitions. [2018-06-22 01:52:01,418 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:52:01,419 INFO ]: Start accepts. Automaton has 4 states. Word has length 7 [2018-06-22 01:52:01,419 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:52:01,428 INFO ]: With dead ends: 31 [2018-06-22 01:52:01,429 INFO ]: Without dead ends: 31 [2018-06-22 01:52:01,430 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 [2018-06-22 01:52:01,445 INFO ]: Start minimizeSevpa. Operand 31 states. [2018-06-22 01:52:01,469 INFO ]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-06-22 01:52:01,471 INFO ]: Start removeUnreachable. Operand 31 states. [2018-06-22 01:52:01,472 INFO ]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2018-06-22 01:52:01,475 INFO ]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 7 [2018-06-22 01:52:01,476 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:52:01,476 INFO ]: Abstraction has 31 states and 39 transitions. [2018-06-22 01:52:01,476 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:52:01,476 INFO ]: Start isEmpty. Operand 31 states and 39 transitions. [2018-06-22 01:52:01,477 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 01:52:01,477 INFO ]: Found error trace [2018-06-22 01:52:01,477 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:52:01,477 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:52:01,477 INFO ]: Analyzing trace with hash 582165080, now seen corresponding path program 1 times [2018-06-22 01:52:01,477 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:52:01,477 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:52:01,480 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:52:01,480 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:52:01,480 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:52:01,499 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:52:01,571 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:52:01,572 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:52:01,572 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:52:01,573 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:52:01,573 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:52:01,573 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:52:01,574 INFO ]: Start difference. First operand 31 states and 39 transitions. Second operand 4 states. [2018-06-22 01:52:01,652 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:52:01,652 INFO ]: Finished difference Result 36 states and 48 transitions. [2018-06-22 01:52:01,653 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 01:52:01,653 INFO ]: Start accepts. Automaton has 4 states. Word has length 10 [2018-06-22 01:52:01,654 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:52:01,658 INFO ]: With dead ends: 36 [2018-06-22 01:52:01,658 INFO ]: Without dead ends: 36 [2018-06-22 01:52:01,658 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 [2018-06-22 01:52:01,659 INFO ]: Start minimizeSevpa. Operand 36 states. [2018-06-22 01:52:01,668 INFO ]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-06-22 01:52:01,668 INFO ]: Start removeUnreachable. Operand 33 states. [2018-06-22 01:52:01,670 INFO ]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2018-06-22 01:52:01,670 INFO ]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 10 [2018-06-22 01:52:01,670 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:52:01,670 INFO ]: Abstraction has 33 states and 41 transitions. [2018-06-22 01:52:01,670 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:52:01,670 INFO ]: Start isEmpty. Operand 33 states and 41 transitions. [2018-06-22 01:52:01,673 INFO ]: Finished isEmpty. Found accepting run of length 28 [2018-06-22 01:52:01,673 INFO ]: Found error trace [2018-06-22 01:52:01,673 INFO ]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:52:01,673 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:52:01,674 INFO ]: Analyzing trace with hash 239855335, now seen corresponding path program 1 times [2018-06-22 01:52:01,674 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:52:01,674 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:52:01,674 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:52:01,675 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:52:01,675 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:52:01,715 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:52:01,926 INFO ]: Checked inductivity of 16 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-22 01:52:01,927 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:52:01,927 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 01:52:01,943 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:52:01,982 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:52:01,991 INFO ]: Computing forward predicates... [2018-06-22 01:52:02,028 INFO ]: Checked inductivity of 16 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-22 01:52:02,063 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:52:02,063 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-06-22 01:52:02,064 INFO ]: Interpolant automaton has 7 states [2018-06-22 01:52:02,064 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 01:52:02,064 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 01:52:02,064 INFO ]: Start difference. First operand 33 states and 41 transitions. Second operand 7 states. [2018-06-22 01:52:02,455 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:52:02,455 INFO ]: Finished difference Result 40 states and 50 transitions. [2018-06-22 01:52:02,456 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 01:52:02,456 INFO ]: Start accepts. Automaton has 7 states. Word has length 27 [2018-06-22 01:52:02,456 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:52:02,456 INFO ]: With dead ends: 40 [2018-06-22 01:52:02,456 INFO ]: Without dead ends: 0 [2018-06-22 01:52:02,457 INFO ]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-06-22 01:52:02,457 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:52:02,457 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:52:02,457 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:52:02,457 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:52:02,457 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-06-22 01:52:02,457 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:52:02,457 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:52:02,457 INFO ]: Interpolant automaton has 7 states. [2018-06-22 01:52:02,457 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:52:02,457 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:52:02,463 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:52:02 BoogieIcfgContainer [2018-06-22 01:52:02,463 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:52:02,464 INFO ]: Toolchain (without parser) took 1930.48 ms. Allocated memory was 304.1 MB in the beginning and 325.1 MB in the end (delta: 21.0 MB). Free memory was 258.5 MB in the beginning and 291.3 MB in the end (delta: -32.9 MB). Peak memory consumption was 84.7 MB. Max. memory is 3.6 GB. [2018-06-22 01:52:02,466 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 304.1 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:52:02,466 INFO ]: ChcToBoogie took 61.51 ms. Allocated memory is still 304.1 MB. Free memory was 258.5 MB in the beginning and 255.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:52:02,470 INFO ]: Boogie Preprocessor took 38.98 ms. Allocated memory is still 304.1 MB. Free memory was 255.5 MB in the beginning and 254.5 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 01:52:02,471 INFO ]: RCFGBuilder took 311.52 ms. Allocated memory is still 304.1 MB. Free memory was 254.5 MB in the beginning and 246.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:52:02,471 INFO ]: TraceAbstraction took 1510.30 ms. Allocated memory was 304.1 MB in the beginning and 325.1 MB in the end (delta: 21.0 MB). Free memory was 246.5 MB in the beginning and 291.3 MB in the end (delta: -44.8 MB). Peak memory consumption was 72.7 MB. Max. memory is 3.6 GB. [2018-06-22 01:52:02,482 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 304.1 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 61.51 ms. Allocated memory is still 304.1 MB. Free memory was 258.5 MB in the beginning and 255.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 38.98 ms. Allocated memory is still 304.1 MB. Free memory was 255.5 MB in the beginning and 254.5 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 311.52 ms. Allocated memory is still 304.1 MB. Free memory was 254.5 MB in the beginning and 246.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1510.30 ms. Allocated memory was 304.1 MB in the beginning and 325.1 MB in the end (delta: 21.0 MB). Free memory was 246.5 MB in the beginning and 291.3 MB in the end (delta: -44.8 MB). Peak memory consumption was 72.7 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 1 error locations. SAFE Result, 1.4s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 68 SDtfs, 57 SDslu, 101 SDs, 0 SdLazy, 48 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=2, 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, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 67 ConstructedInterpolants, 0 QuantifiedInterpolants, 3515 SizeOfPredicates, 8 NumberOfNonLiveVariables, 90 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 30/32 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/sum_cps.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-52-02-496.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum_cps.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-52-02-496.csv Received shutdown request...