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/hopv/lia/mochi/mc91_cps.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 09:32:47,887 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 09:32:47,894 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 09:32:47,905 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 09:32:47,905 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 09:32:47,906 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 09:32:47,907 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 09:32:47,909 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 09:32:47,911 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 09:32:47,911 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 09:32:47,912 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 09:32:47,913 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 09:32:47,913 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 09:32:47,914 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 09:32:47,915 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 09:32:47,916 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 09:32:47,918 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 09:32:47,921 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 09:32:47,922 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 09:32:47,923 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 09:32:47,924 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 09:32:47,927 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 09:32:47,927 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 09:32:47,927 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 09:32:47,928 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 09:32:47,929 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 09:32:47,930 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 09:32:47,930 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 09:32:47,931 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... 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[2018-06-25 09:32:47,935 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 09:32:47,948 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 09:32:47,948 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 09:32:47,949 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 09:32:47,949 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 09:32:47,950 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 09:32:47,950 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 09:32:47,950 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 09:32:47,951 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 09:32:47,951 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 09:32:47,951 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 09:32:47,951 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 09:32:47,951 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 09:32:47,952 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 09:32:47,952 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 09:32:47,952 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 09:32:47,952 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 09:32:47,952 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 09:32:47,952 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 09:32:47,953 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 09:32:47,953 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 09:32:47,953 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 09:32:47,954 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 09:32:47,954 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 09:32:47,996 INFO ]: Repository-Root is: /tmp [2018-06-25 09:32:48,014 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 09:32:48,017 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 09:32:48,019 INFO ]: Initializing SmtParser... [2018-06-25 09:32:48,019 INFO ]: SmtParser initialized [2018-06-25 09:32:48,020 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/mc91_cps.smt2 [2018-06-25 09:32:48,021 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 09:32:48,113 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/mc91_cps.smt2 unknown [2018-06-25 09:32:48,392 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/mc91_cps.smt2 [2018-06-25 09:32:48,405 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 09:32:48,412 INFO ]: Walking toolchain with 4 elements. [2018-06-25 09:32:48,413 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 09:32:48,413 INFO ]: Initializing ChcToBoogie... [2018-06-25 09:32:48,413 INFO ]: ChcToBoogie initialized [2018-06-25 09:32:48,416 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:32:48" (1/1) ... [2018-06-25 09:32:48,466 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:48 Unit [2018-06-25 09:32:48,466 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 09:32:48,467 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 09:32:48,467 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 09:32:48,467 INFO ]: Boogie Preprocessor initialized [2018-06-25 09:32:48,486 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:48" (1/1) ... [2018-06-25 09:32:48,487 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:48" (1/1) ... [2018-06-25 09:32:48,493 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:48" (1/1) ... [2018-06-25 09:32:48,493 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:48" (1/1) ... [2018-06-25 09:32:48,496 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:48" (1/1) ... [2018-06-25 09:32:48,499 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:48" (1/1) ... [2018-06-25 09:32:48,502 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:48" (1/1) ... [2018-06-25 09:32:48,503 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 09:32:48,504 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 09:32:48,504 INFO ]: Initializing RCFGBuilder... [2018-06-25 09:32:48,504 INFO ]: RCFGBuilder initialized [2018-06-25 09:32:48,505 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:48" (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 09:32:48,522 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 09:32:48,522 INFO ]: Found specification of procedure gotoProc [2018-06-25 09:32:48,523 INFO ]: Found implementation of procedure gotoProc [2018-06-25 09:32:48,523 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 09:32:48,523 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 09:32:48,523 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 09:32:48,820 INFO ]: Using library mode [2018-06-25 09:32:48,821 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:32:48 BoogieIcfgContainer [2018-06-25 09:32:48,821 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 09:32:48,822 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 09:32:48,822 INFO ]: Initializing TraceAbstraction... [2018-06-25 09:32:48,825 INFO ]: TraceAbstraction initialized [2018-06-25 09:32:48,825 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:32:48" (1/3) ... [2018-06-25 09:32:48,826 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@741bb48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 09:32:48, skipping insertion in model container [2018-06-25 09:32:48,826 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:48" (2/3) ... [2018-06-25 09:32:48,826 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@741bb48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 09:32:48, skipping insertion in model container [2018-06-25 09:32:48,826 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:32:48" (3/3) ... [2018-06-25 09:32:48,828 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 09:32:48,837 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 09:32:48,846 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 09:32:48,892 INFO ]: Using default assertion order modulation [2018-06-25 09:32:48,892 INFO ]: Interprodecural is true [2018-06-25 09:32:48,892 INFO ]: Hoare is false [2018-06-25 09:32:48,892 INFO ]: Compute interpolants for FPandBP [2018-06-25 09:32:48,892 INFO ]: Backedges is TWOTRACK [2018-06-25 09:32:48,892 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 09:32:48,892 INFO ]: Difference is false [2018-06-25 09:32:48,892 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 09:32:48,892 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 09:32:48,912 INFO ]: Start isEmpty. Operand 22 states. [2018-06-25 09:32:48,924 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 09:32:48,924 INFO ]: Found error trace [2018-06-25 09:32:48,925 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:32:48,925 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:32:48,928 INFO ]: Analyzing trace with hash -289324445, now seen corresponding path program 1 times [2018-06-25 09:32:48,930 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:32:48,930 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:32:48,961 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:48,961 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:32:48,961 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:48,985 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:32:49,016 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:32:49,018 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:32:49,018 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-25 09:32:49,019 INFO ]: Interpolant automaton has 2 states [2018-06-25 09:32:49,030 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-25 09:32:49,030 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-25 09:32:49,032 INFO ]: Start difference. First operand 22 states. Second operand 2 states. [2018-06-25 09:32:49,049 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:32:49,050 INFO ]: Finished difference Result 20 states and 27 transitions. [2018-06-25 09:32:49,050 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-25 09:32:49,051 INFO ]: Start accepts. Automaton has 2 states. Word has length 8 [2018-06-25 09:32:49,052 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:32:49,063 INFO ]: With dead ends: 20 [2018-06-25 09:32:49,063 INFO ]: Without dead ends: 20 [2018-06-25 09:32:49,064 INFO ]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-25 09:32:49,077 INFO ]: Start minimizeSevpa. Operand 20 states. [2018-06-25 09:32:49,095 INFO ]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-06-25 09:32:49,097 INFO ]: Start removeUnreachable. Operand 20 states. [2018-06-25 09:32:49,098 INFO ]: Finished removeUnreachable. Reduced from 20 states to 20 states and 27 transitions. [2018-06-25 09:32:49,103 INFO ]: Start accepts. Automaton has 20 states and 27 transitions. Word has length 8 [2018-06-25 09:32:49,103 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:32:49,103 INFO ]: Abstraction has 20 states and 27 transitions. [2018-06-25 09:32:49,103 INFO ]: Interpolant automaton has 2 states. [2018-06-25 09:32:49,103 INFO ]: Start isEmpty. Operand 20 states and 27 transitions. [2018-06-25 09:32:49,105 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 09:32:49,105 INFO ]: Found error trace [2018-06-25 09:32:49,105 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:32:49,105 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:32:49,105 INFO ]: Analyzing trace with hash -426442487, now seen corresponding path program 1 times [2018-06-25 09:32:49,105 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:32:49,105 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:32:49,106 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:49,106 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:32:49,106 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:49,114 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:32:49,167 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:32:49,167 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:32:49,167 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 09:32:49,169 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:32:49,169 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:32:49,169 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:32:49,169 INFO ]: Start difference. First operand 20 states and 27 transitions. Second operand 4 states. [2018-06-25 09:32:49,314 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:32:49,314 INFO ]: Finished difference Result 34 states and 47 transitions. [2018-06-25 09:32:49,314 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:32:49,314 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-25 09:32:49,314 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:32:49,316 INFO ]: With dead ends: 34 [2018-06-25 09:32:49,316 INFO ]: Without dead ends: 34 [2018-06-25 09:32:49,316 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 09:32:49,316 INFO ]: Start minimizeSevpa. Operand 34 states. [2018-06-25 09:32:49,325 INFO ]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-06-25 09:32:49,325 INFO ]: Start removeUnreachable. Operand 34 states. [2018-06-25 09:32:49,327 INFO ]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2018-06-25 09:32:49,327 INFO ]: Start accepts. Automaton has 34 states and 47 transitions. Word has length 9 [2018-06-25 09:32:49,327 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:32:49,327 INFO ]: Abstraction has 34 states and 47 transitions. [2018-06-25 09:32:49,327 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:32:49,327 INFO ]: Start isEmpty. Operand 34 states and 47 transitions. [2018-06-25 09:32:49,328 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-25 09:32:49,328 INFO ]: Found error trace [2018-06-25 09:32:49,329 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:32:49,329 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:32:49,329 INFO ]: Analyzing trace with hash 820485477, now seen corresponding path program 1 times [2018-06-25 09:32:49,329 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:32:49,329 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:32:49,330 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:49,330 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:32:49,330 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:49,342 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:32:49,414 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:32:49,415 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:32:49,415 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 09:32:49,415 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:32:49,415 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:32:49,415 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:32:49,415 INFO ]: Start difference. First operand 34 states and 47 transitions. Second operand 4 states. [2018-06-25 09:32:49,620 WARN ]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-06-25 09:32:49,664 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:32:49,664 INFO ]: Finished difference Result 49 states and 82 transitions. [2018-06-25 09:32:49,665 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:32:49,665 INFO ]: Start accepts. Automaton has 4 states. Word has length 11 [2018-06-25 09:32:49,665 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:32:49,669 INFO ]: With dead ends: 49 [2018-06-25 09:32:49,669 INFO ]: Without dead ends: 49 [2018-06-25 09:32:49,669 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 [2018-06-25 09:32:49,669 INFO ]: Start minimizeSevpa. Operand 49 states. [2018-06-25 09:32:49,679 INFO ]: Finished minimizeSevpa. Reduced states from 49 to 35. [2018-06-25 09:32:49,679 INFO ]: Start removeUnreachable. Operand 35 states. [2018-06-25 09:32:49,681 INFO ]: Finished removeUnreachable. Reduced from 35 states to 35 states and 47 transitions. [2018-06-25 09:32:49,681 INFO ]: Start accepts. Automaton has 35 states and 47 transitions. Word has length 11 [2018-06-25 09:32:49,681 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:32:49,681 INFO ]: Abstraction has 35 states and 47 transitions. [2018-06-25 09:32:49,681 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:32:49,681 INFO ]: Start isEmpty. Operand 35 states and 47 transitions. [2018-06-25 09:32:49,682 INFO ]: Finished isEmpty. Found accepting run of length 21 [2018-06-25 09:32:49,682 INFO ]: Found error trace [2018-06-25 09:32:49,683 INFO ]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:32:49,683 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:32:49,683 INFO ]: Analyzing trace with hash -1569364884, now seen corresponding path program 1 times [2018-06-25 09:32:49,683 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:32:49,683 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:32:49,684 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:49,684 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:32:49,684 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:49,694 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:32:49,756 INFO ]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-25 09:32:49,756 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:32:49,756 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 09:32:49,756 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:32:49,756 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:32:49,756 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:32:49,756 INFO ]: Start difference. First operand 35 states and 47 transitions. Second operand 4 states. [2018-06-25 09:32:49,973 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:32:49,974 INFO ]: Finished difference Result 52 states and 70 transitions. [2018-06-25 09:32:49,974 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:32:49,974 INFO ]: Start accepts. Automaton has 4 states. Word has length 20 [2018-06-25 09:32:49,974 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:32:49,975 INFO ]: With dead ends: 52 [2018-06-25 09:32:49,976 INFO ]: Without dead ends: 52 [2018-06-25 09:32:49,976 INFO ]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:32:49,976 INFO ]: Start minimizeSevpa. Operand 52 states. [2018-06-25 09:32:49,982 INFO ]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-06-25 09:32:49,982 INFO ]: Start removeUnreachable. Operand 52 states. [2018-06-25 09:32:49,984 INFO ]: Finished removeUnreachable. Reduced from 52 states to 52 states and 70 transitions. [2018-06-25 09:32:49,984 INFO ]: Start accepts. Automaton has 52 states and 70 transitions. Word has length 20 [2018-06-25 09:32:49,984 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:32:49,984 INFO ]: Abstraction has 52 states and 70 transitions. [2018-06-25 09:32:49,984 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:32:49,984 INFO ]: Start isEmpty. Operand 52 states and 70 transitions. [2018-06-25 09:32:49,987 INFO ]: Finished isEmpty. Found accepting run of length 39 [2018-06-25 09:32:49,987 INFO ]: Found error trace [2018-06-25 09:32:49,987 INFO ]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:32:49,987 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:32:49,987 INFO ]: Analyzing trace with hash 1943273301, now seen corresponding path program 1 times [2018-06-25 09:32:49,987 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:32:49,987 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:32:49,988 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:49,988 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:32:49,988 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:50,011 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:32:50,521 INFO ]: Checked inductivity of 36 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-25 09:32:50,522 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:32:50,522 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 09:32:50,561 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:32:50,623 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:32:50,634 INFO ]: Computing forward predicates... [2018-06-25 09:32:51,252 INFO ]: Checked inductivity of 36 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-25 09:32:51,277 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 09:32:51,278 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 20 [2018-06-25 09:32:51,278 INFO ]: Interpolant automaton has 20 states [2018-06-25 09:32:51,278 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-25 09:32:51,278 INFO ]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2018-06-25 09:32:51,278 INFO ]: Start difference. First operand 52 states and 70 transitions. Second operand 20 states. [2018-06-25 09:32:52,464 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:32:52,464 INFO ]: Finished difference Result 88 states and 163 transitions. [2018-06-25 09:32:52,464 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-06-25 09:32:52,464 INFO ]: Start accepts. Automaton has 20 states. Word has length 38 [2018-06-25 09:32:52,464 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:32:52,464 INFO ]: With dead ends: 88 [2018-06-25 09:32:52,465 INFO ]: Without dead ends: 0 [2018-06-25 09:32:52,465 INFO ]: 0 DeclaredPredicates, 62 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=138, Invalid=854, Unknown=0, NotChecked=0, Total=992 [2018-06-25 09:32:52,465 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 09:32:52,465 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 09:32:52,465 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 09:32:52,465 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 09:32:52,465 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2018-06-25 09:32:52,466 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:32:52,466 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 09:32:52,466 INFO ]: Interpolant automaton has 20 states. [2018-06-25 09:32:52,466 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 09:32:52,466 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 09:32:52,469 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 09:32:52 BoogieIcfgContainer [2018-06-25 09:32:52,470 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 09:32:52,470 INFO ]: Toolchain (without parser) took 4064.37 ms. Allocated memory was 308.8 MB in the beginning and 340.8 MB in the end (delta: 32.0 MB). Free memory was 263.2 MB in the beginning and 277.7 MB in the end (delta: -14.6 MB). Peak memory consumption was 17.4 MB. Max. memory is 3.6 GB. [2018-06-25 09:32:52,471 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 09:32:52,471 INFO ]: ChcToBoogie took 53.48 ms. Allocated memory is still 308.8 MB. Free memory was 262.2 MB in the beginning and 260.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:32:52,472 INFO ]: Boogie Preprocessor took 36.45 ms. Allocated memory is still 308.8 MB. Free memory was 260.2 MB in the beginning and 259.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-25 09:32:52,473 INFO ]: RCFGBuilder took 316.97 ms. Allocated memory is still 308.8 MB. Free memory was 259.2 MB in the beginning and 250.2 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:32:52,473 INFO ]: TraceAbstraction took 3647.68 ms. Allocated memory was 308.8 MB in the beginning and 340.8 MB in the end (delta: 32.0 MB). Free memory was 249.2 MB in the beginning and 277.7 MB in the end (delta: -28.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 3.6 GB. [2018-06-25 09:32:52,476 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 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 53.48 ms. Allocated memory is still 308.8 MB. Free memory was 262.2 MB in the beginning and 260.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 36.45 ms. Allocated memory is still 308.8 MB. Free memory was 260.2 MB in the beginning and 259.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 316.97 ms. Allocated memory is still 308.8 MB. Free memory was 259.2 MB in the beginning and 250.2 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3647.68 ms. Allocated memory was 308.8 MB in the beginning and 340.8 MB in the end (delta: 32.0 MB). Free memory was 249.2 MB in the beginning and 277.7 MB in the end (delta: -28.5 MB). Peak memory consumption was 3.5 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, 22 locations, 1 error locations. SAFE Result, 3.5s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 1.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 148 SDtfs, 203 SDslu, 367 SDs, 0 SdLazy, 645 SolverSat, 118 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 14 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 14156 SizeOfPredicates, 13 NumberOfNonLiveVariables, 119 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 55/79 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/mc91_cps.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_09-32-52-487.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/mc91_cps.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_09-32-52-487.csv Received shutdown request...