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/inc3.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:48:00,655 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:48:00,658 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:48:00,669 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:48:00,670 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:48:00,671 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:48:00,672 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:48:00,674 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:48:00,676 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:48:00,677 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:48:00,678 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:48:00,678 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:48:00,682 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:48:00,684 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:48:00,684 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:48:00,685 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:48:00,690 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:48:00,702 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:48:00,704 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:48:00,705 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:48:00,707 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:48:00,709 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-06-22 01:48:00,726 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:48:00,750 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:48:00,751 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:48:00,751 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:48:00,751 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:48:00,752 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:48:00,752 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:48:00,753 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:48:00,753 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:48:00,753 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:48:00,753 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:48:00,753 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:48:00,753 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:48:00,758 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:48:00,758 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:48:00,759 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:48:00,759 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:48:00,759 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:48:00,762 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:48:00,762 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:48:00,815 INFO ]: Repository-Root is: /tmp [2018-06-22 01:48:00,835 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:48:00,842 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:48:00,843 INFO ]: Initializing SmtParser... [2018-06-22 01:48:00,843 INFO ]: SmtParser initialized [2018-06-22 01:48:00,844 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/inc3.smt2 [2018-06-22 01:48:00,845 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 01:48:00,939 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/inc3.smt2 unknown [2018-06-22 01:48:01,195 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/inc3.smt2 [2018-06-22 01:48:01,206 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:48:01,215 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:48:01,216 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:48:01,216 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:48:01,216 INFO ]: ChcToBoogie initialized [2018-06-22 01:48:01,220 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:48:01" (1/1) ... [2018-06-22 01:48:01,288 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:48:01 Unit [2018-06-22 01:48:01,288 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:48:01,289 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:48:01,289 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:48:01,289 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:48:01,311 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:48:01" (1/1) ... [2018-06-22 01:48:01,311 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:48:01" (1/1) ... [2018-06-22 01:48:01,317 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:48:01" (1/1) ... [2018-06-22 01:48:01,318 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:48:01" (1/1) ... [2018-06-22 01:48:01,323 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:48:01" (1/1) ... [2018-06-22 01:48:01,327 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:48:01" (1/1) ... [2018-06-22 01:48:01,328 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:48:01" (1/1) ... [2018-06-22 01:48:01,330 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:48:01,330 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:48:01,331 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:48:01,331 INFO ]: RCFGBuilder initialized [2018-06-22 01:48:01,331 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:48:01" (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 01:48:01,343 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:48:01,343 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:48:01,343 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:48:01,343 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:48:01,343 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:48:01,343 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 01:48:01,739 INFO ]: Using library mode [2018-06-22 01:48:01,739 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:48:01 BoogieIcfgContainer [2018-06-22 01:48:01,739 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:48:01,741 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:48:01,741 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:48:01,748 INFO ]: TraceAbstraction initialized [2018-06-22 01:48:01,748 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:48:01" (1/3) ... [2018-06-22 01:48:01,749 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce5d0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:48:01, skipping insertion in model container [2018-06-22 01:48:01,749 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:48:01" (2/3) ... [2018-06-22 01:48:01,750 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce5d0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:48:01, skipping insertion in model container [2018-06-22 01:48:01,750 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:48:01" (3/3) ... [2018-06-22 01:48:01,752 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:48:01,762 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:48:01,768 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:48:01,801 INFO ]: Using default assertion order modulation [2018-06-22 01:48:01,801 INFO ]: Interprodecural is true [2018-06-22 01:48:01,801 INFO ]: Hoare is false [2018-06-22 01:48:01,802 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:48:01,802 INFO ]: Backedges is TWOTRACK [2018-06-22 01:48:01,802 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:48:01,802 INFO ]: Difference is false [2018-06-22 01:48:01,802 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:48:01,802 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:48:01,817 INFO ]: Start isEmpty. Operand 39 states. [2018-06-22 01:48:01,829 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:48:01,830 INFO ]: Found error trace [2018-06-22 01:48:01,831 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:48:01,831 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:48:01,837 INFO ]: Analyzing trace with hash -1352059096, now seen corresponding path program 1 times [2018-06-22 01:48:01,840 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:48:01,840 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:48:01,872 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:48:01,872 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:48:01,872 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:48:01,902 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:48:02,014 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:48:02,016 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:48:02,016 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:48:02,017 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:48:02,027 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:48:02,027 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:48:02,029 INFO ]: Start difference. First operand 39 states. Second operand 4 states. [2018-06-22 01:48:02,676 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:48:02,676 INFO ]: Finished difference Result 66 states and 95 transitions. [2018-06-22 01:48:02,677 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:48:02,678 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 01:48:02,679 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:48:02,694 INFO ]: With dead ends: 66 [2018-06-22 01:48:02,695 INFO ]: Without dead ends: 66 [2018-06-22 01:48:02,697 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 01:48:02,717 INFO ]: Start minimizeSevpa. Operand 66 states. [2018-06-22 01:48:02,756 INFO ]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-06-22 01:48:02,758 INFO ]: Start removeUnreachable. Operand 66 states. [2018-06-22 01:48:02,765 INFO ]: Finished removeUnreachable. Reduced from 66 states to 66 states and 95 transitions. [2018-06-22 01:48:02,766 INFO ]: Start accepts. Automaton has 66 states and 95 transitions. Word has length 8 [2018-06-22 01:48:02,766 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:48:02,766 INFO ]: Abstraction has 66 states and 95 transitions. [2018-06-22 01:48:02,766 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:48:02,766 INFO ]: Start isEmpty. Operand 66 states and 95 transitions. [2018-06-22 01:48:02,772 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 01:48:02,772 INFO ]: Found error trace [2018-06-22 01:48:02,772 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:48:02,772 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:48:02,772 INFO ]: Analyzing trace with hash 764710669, now seen corresponding path program 1 times [2018-06-22 01:48:02,773 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:48:02,773 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:48:02,773 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:48:02,773 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:48:02,773 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:48:02,797 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:48:02,973 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:48:02,974 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:48:02,974 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:48:02,975 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:48:02,975 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:48:02,975 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:48:02,975 INFO ]: Start difference. First operand 66 states and 95 transitions. Second operand 4 states. [2018-06-22 01:48:03,690 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:48:03,690 INFO ]: Finished difference Result 93 states and 135 transitions. [2018-06-22 01:48:03,691 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:48:03,691 INFO ]: Start accepts. Automaton has 4 states. Word has length 13 [2018-06-22 01:48:03,691 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:48:03,695 INFO ]: With dead ends: 93 [2018-06-22 01:48:03,695 INFO ]: Without dead ends: 93 [2018-06-22 01:48:03,696 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 01:48:03,696 INFO ]: Start minimizeSevpa. Operand 93 states. [2018-06-22 01:48:03,709 INFO ]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-06-22 01:48:03,709 INFO ]: Start removeUnreachable. Operand 93 states. [2018-06-22 01:48:03,712 INFO ]: Finished removeUnreachable. Reduced from 93 states to 93 states and 135 transitions. [2018-06-22 01:48:03,713 INFO ]: Start accepts. Automaton has 93 states and 135 transitions. Word has length 13 [2018-06-22 01:48:03,713 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:48:03,713 INFO ]: Abstraction has 93 states and 135 transitions. [2018-06-22 01:48:03,713 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:48:03,713 INFO ]: Start isEmpty. Operand 93 states and 135 transitions. [2018-06-22 01:48:03,715 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-22 01:48:03,715 INFO ]: Found error trace [2018-06-22 01:48:03,715 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:48:03,715 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:48:03,715 INFO ]: Analyzing trace with hash 1217723138, now seen corresponding path program 1 times [2018-06-22 01:48:03,715 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:48:03,715 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:48:03,716 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:48:03,716 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:48:03,716 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:48:03,734 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:48:03,891 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:48:03,891 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:48:03,891 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-22 01:48:03,891 INFO ]: Interpolant automaton has 5 states [2018-06-22 01:48:03,891 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 01:48:03,891 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:48:03,892 INFO ]: Start difference. First operand 93 states and 135 transitions. Second operand 5 states. [2018-06-22 01:48:04,166 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:48:04,166 INFO ]: Finished difference Result 173 states and 303 transitions. [2018-06-22 01:48:04,166 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:48:04,166 INFO ]: Start accepts. Automaton has 5 states. Word has length 14 [2018-06-22 01:48:04,166 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:48:04,177 INFO ]: With dead ends: 173 [2018-06-22 01:48:04,177 INFO ]: Without dead ends: 173 [2018-06-22 01:48:04,177 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-22 01:48:04,178 INFO ]: Start minimizeSevpa. Operand 173 states. [2018-06-22 01:48:04,207 INFO ]: Finished minimizeSevpa. Reduced states from 173 to 101. [2018-06-22 01:48:04,208 INFO ]: Start removeUnreachable. Operand 101 states. [2018-06-22 01:48:04,211 INFO ]: Finished removeUnreachable. Reduced from 101 states to 101 states and 146 transitions. [2018-06-22 01:48:04,211 INFO ]: Start accepts. Automaton has 101 states and 146 transitions. Word has length 14 [2018-06-22 01:48:04,211 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:48:04,211 INFO ]: Abstraction has 101 states and 146 transitions. [2018-06-22 01:48:04,211 INFO ]: Interpolant automaton has 5 states. [2018-06-22 01:48:04,211 INFO ]: Start isEmpty. Operand 101 states and 146 transitions. [2018-06-22 01:48:04,214 INFO ]: Finished isEmpty. Found accepting run of length 27 [2018-06-22 01:48:04,214 INFO ]: Found error trace [2018-06-22 01:48:04,214 INFO ]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:48:04,215 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:48:04,215 INFO ]: Analyzing trace with hash 1171278336, now seen corresponding path program 1 times [2018-06-22 01:48:04,215 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:48:04,215 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:48:04,216 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:48:04,216 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:48:04,216 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:48:04,222 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:48:04,271 INFO ]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 01:48:04,272 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:48:04,272 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 01:48:04,281 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:48:04,323 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:48:04,331 INFO ]: Computing forward predicates... [2018-06-22 01:48:04,351 INFO ]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 01:48:04,378 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:48:04,378 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-22 01:48:04,378 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:48:04,378 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:48:04,378 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:48:04,378 INFO ]: Start difference. First operand 101 states and 146 transitions. Second operand 4 states. [2018-06-22 01:48:05,061 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:48:05,061 INFO ]: Finished difference Result 126 states and 183 transitions. [2018-06-22 01:48:05,062 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:48:05,062 INFO ]: Start accepts. Automaton has 4 states. Word has length 26 [2018-06-22 01:48:05,062 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:48:05,065 INFO ]: With dead ends: 126 [2018-06-22 01:48:05,065 INFO ]: Without dead ends: 126 [2018-06-22 01:48:05,065 INFO ]: 0 DeclaredPredicates, 31 GetRequests, 28 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 01:48:05,066 INFO ]: Start minimizeSevpa. Operand 126 states. [2018-06-22 01:48:05,079 INFO ]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-06-22 01:48:05,079 INFO ]: Start removeUnreachable. Operand 126 states. [2018-06-22 01:48:05,082 INFO ]: Finished removeUnreachable. Reduced from 126 states to 126 states and 183 transitions. [2018-06-22 01:48:05,082 INFO ]: Start accepts. Automaton has 126 states and 183 transitions. Word has length 26 [2018-06-22 01:48:05,082 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:48:05,082 INFO ]: Abstraction has 126 states and 183 transitions. [2018-06-22 01:48:05,083 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:48:05,083 INFO ]: Start isEmpty. Operand 126 states and 183 transitions. [2018-06-22 01:48:05,089 INFO ]: Finished isEmpty. Found accepting run of length 53 [2018-06-22 01:48:05,089 INFO ]: Found error trace [2018-06-22 01:48:05,089 INFO ]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:48:05,089 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:48:05,089 INFO ]: Analyzing trace with hash 1117197835, now seen corresponding path program 1 times [2018-06-22 01:48:05,089 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:48:05,089 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:48:05,090 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:48:05,090 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:48:05,090 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:48:05,108 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:48:05,219 INFO ]: Checked inductivity of 59 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-06-22 01:48:05,219 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:48:05,219 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 01:48:05,229 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:48:05,278 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:48:05,281 INFO ]: Computing forward predicates... [2018-06-22 01:48:05,290 INFO ]: Checked inductivity of 59 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-06-22 01:48:05,321 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-22 01:48:05,321 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2018-06-22 01:48:05,321 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:48:05,321 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:48:05,321 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:48:05,322 INFO ]: Start difference. First operand 126 states and 183 transitions. Second operand 4 states. [2018-06-22 01:48:05,696 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:48:05,696 INFO ]: Finished difference Result 173 states and 251 transitions. [2018-06-22 01:48:05,696 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:48:05,696 INFO ]: Start accepts. Automaton has 4 states. Word has length 52 [2018-06-22 01:48:05,696 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:48:05,699 INFO ]: With dead ends: 173 [2018-06-22 01:48:05,699 INFO ]: Without dead ends: 146 [2018-06-22 01:48:05,700 INFO ]: 0 DeclaredPredicates, 57 GetRequests, 54 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 01:48:05,700 INFO ]: Start minimizeSevpa. Operand 146 states. [2018-06-22 01:48:05,714 INFO ]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-06-22 01:48:05,714 INFO ]: Start removeUnreachable. Operand 146 states. [2018-06-22 01:48:05,717 INFO ]: Finished removeUnreachable. Reduced from 146 states to 146 states and 205 transitions. [2018-06-22 01:48:05,717 INFO ]: Start accepts. Automaton has 146 states and 205 transitions. Word has length 52 [2018-06-22 01:48:05,717 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:48:05,717 INFO ]: Abstraction has 146 states and 205 transitions. [2018-06-22 01:48:05,717 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:48:05,717 INFO ]: Start isEmpty. Operand 146 states and 205 transitions. [2018-06-22 01:48:05,724 INFO ]: Finished isEmpty. Found accepting run of length 77 [2018-06-22 01:48:05,724 INFO ]: Found error trace [2018-06-22 01:48:05,724 INFO ]: trace histogram [6, 6, 6, 6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:48:05,724 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:48:05,725 INFO ]: Analyzing trace with hash -917277954, now seen corresponding path program 1 times [2018-06-22 01:48:05,725 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:48:05,725 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:48:05,725 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:48:05,725 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:48:05,725 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:48:05,800 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:48:06,146 INFO ]: Checked inductivity of 135 backedges. 21 proven. 12 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-06-22 01:48:06,146 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:48:06,146 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 01:48:06,161 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:48:06,236 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:48:06,241 INFO ]: Computing forward predicates... [2018-06-22 01:48:06,417 INFO ]: Checked inductivity of 135 backedges. 79 proven. 9 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-06-22 01:48:06,452 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:48:06,452 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 16 [2018-06-22 01:48:06,452 INFO ]: Interpolant automaton has 16 states [2018-06-22 01:48:06,453 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 01:48:06,453 INFO ]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2018-06-22 01:48:06,453 INFO ]: Start difference. First operand 146 states and 205 transitions. Second operand 16 states. [2018-06-22 01:48:14,102 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:48:14,102 INFO ]: Finished difference Result 555 states and 1443 transitions. [2018-06-22 01:48:14,103 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-06-22 01:48:14,103 INFO ]: Start accepts. Automaton has 16 states. Word has length 76 [2018-06-22 01:48:14,103 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:48:14,126 INFO ]: With dead ends: 555 [2018-06-22 01:48:14,127 INFO ]: Without dead ends: 449 [2018-06-22 01:48:14,127 INFO ]: 0 DeclaredPredicates, 127 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=310, Invalid=1670, Unknown=0, NotChecked=0, Total=1980 [2018-06-22 01:48:14,128 INFO ]: Start minimizeSevpa. Operand 449 states. [2018-06-22 01:48:14,234 INFO ]: Finished minimizeSevpa. Reduced states from 449 to 202. [2018-06-22 01:48:14,234 INFO ]: Start removeUnreachable. Operand 202 states. [2018-06-22 01:48:14,237 INFO ]: Finished removeUnreachable. Reduced from 202 states to 202 states and 315 transitions. [2018-06-22 01:48:14,237 INFO ]: Start accepts. Automaton has 202 states and 315 transitions. Word has length 76 [2018-06-22 01:48:14,238 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:48:14,238 INFO ]: Abstraction has 202 states and 315 transitions. [2018-06-22 01:48:14,238 INFO ]: Interpolant automaton has 16 states. [2018-06-22 01:48:14,238 INFO ]: Start isEmpty. Operand 202 states and 315 transitions. [2018-06-22 01:48:14,246 INFO ]: Finished isEmpty. Found accepting run of length 85 [2018-06-22 01:48:14,246 INFO ]: Found error trace [2018-06-22 01:48:14,246 INFO ]: trace histogram [7, 7, 7, 7, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:48:14,246 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:48:14,246 INFO ]: Analyzing trace with hash 1740649525, now seen corresponding path program 1 times [2018-06-22 01:48:14,246 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:48:14,246 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:48:14,247 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:48:14,247 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:48:14,247 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:48:14,266 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:48:14,325 INFO ]: Checked inductivity of 173 backedges. 37 proven. 10 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-06-22 01:48:14,325 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:48:14,325 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:48:14,332 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:48:14,397 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:48:14,402 INFO ]: Computing forward predicates... [2018-06-22 01:48:14,426 INFO ]: Checked inductivity of 173 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-06-22 01:48:14,487 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-22 01:48:14,488 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2018-06-22 01:48:14,488 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:48:14,488 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:48:14,488 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:48:14,488 INFO ]: Start difference. First operand 202 states and 315 transitions. Second operand 4 states. [2018-06-22 01:48:14,781 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:48:14,782 INFO ]: Finished difference Result 233 states and 364 transitions. [2018-06-22 01:48:14,782 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:48:14,782 INFO ]: Start accepts. Automaton has 4 states. Word has length 84 [2018-06-22 01:48:14,782 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:48:14,787 INFO ]: With dead ends: 233 [2018-06-22 01:48:14,787 INFO ]: Without dead ends: 233 [2018-06-22 01:48:14,787 INFO ]: 0 DeclaredPredicates, 89 GetRequests, 86 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 01:48:14,788 INFO ]: Start minimizeSevpa. Operand 233 states. [2018-06-22 01:48:14,808 INFO ]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-06-22 01:48:14,808 INFO ]: Start removeUnreachable. Operand 233 states. [2018-06-22 01:48:14,811 INFO ]: Finished removeUnreachable. Reduced from 233 states to 233 states and 364 transitions. [2018-06-22 01:48:14,811 INFO ]: Start accepts. Automaton has 233 states and 364 transitions. Word has length 84 [2018-06-22 01:48:14,814 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:48:14,814 INFO ]: Abstraction has 233 states and 364 transitions. [2018-06-22 01:48:14,814 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:48:14,814 INFO ]: Start isEmpty. Operand 233 states and 364 transitions. [2018-06-22 01:48:14,830 INFO ]: Finished isEmpty. Found accepting run of length 171 [2018-06-22 01:48:14,830 INFO ]: Found error trace [2018-06-22 01:48:14,830 INFO ]: trace histogram [14, 14, 14, 13, 11, 11, 11, 6, 6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:48:14,830 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:48:14,830 INFO ]: Analyzing trace with hash -937472188, now seen corresponding path program 1 times [2018-06-22 01:48:14,830 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:48:14,830 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:48:14,831 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:48:14,831 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:48:14,831 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:48:14,923 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:48:15,117 INFO ]: Checked inductivity of 785 backedges. 49 proven. 58 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked. [2018-06-22 01:48:15,117 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:48:15,117 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:48:15,125 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:48:15,231 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:48:15,249 INFO ]: Computing forward predicates... [2018-06-22 01:48:15,501 INFO ]: Checked inductivity of 785 backedges. 284 proven. 5 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2018-06-22 01:48:15,522 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:48:15,522 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 11 [2018-06-22 01:48:15,523 INFO ]: Interpolant automaton has 11 states [2018-06-22 01:48:15,523 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 01:48:15,523 INFO ]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-06-22 01:48:15,523 INFO ]: Start difference. First operand 233 states and 364 transitions. Second operand 11 states. [2018-06-22 01:48:15,671 WARN ]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-06-22 01:48:16,479 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:48:16,480 INFO ]: Finished difference Result 437 states and 924 transitions. [2018-06-22 01:48:16,480 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-06-22 01:48:16,480 INFO ]: Start accepts. Automaton has 11 states. Word has length 170 [2018-06-22 01:48:16,480 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:48:16,489 INFO ]: With dead ends: 437 [2018-06-22 01:48:16,489 INFO ]: Without dead ends: 437 [2018-06-22 01:48:16,490 INFO ]: 0 DeclaredPredicates, 195 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2018-06-22 01:48:16,490 INFO ]: Start minimizeSevpa. Operand 437 states. [2018-06-22 01:48:16,542 INFO ]: Finished minimizeSevpa. Reduced states from 437 to 282. [2018-06-22 01:48:16,542 INFO ]: Start removeUnreachable. Operand 282 states. [2018-06-22 01:48:16,549 INFO ]: Finished removeUnreachable. Reduced from 282 states to 282 states and 506 transitions. [2018-06-22 01:48:16,549 INFO ]: Start accepts. Automaton has 282 states and 506 transitions. Word has length 170 [2018-06-22 01:48:16,549 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:48:16,549 INFO ]: Abstraction has 282 states and 506 transitions. [2018-06-22 01:48:16,549 INFO ]: Interpolant automaton has 11 states. [2018-06-22 01:48:16,549 INFO ]: Start isEmpty. Operand 282 states and 506 transitions. [2018-06-22 01:48:16,564 INFO ]: Finished isEmpty. Found accepting run of length 224 [2018-06-22 01:48:16,564 INFO ]: Found error trace [2018-06-22 01:48:16,564 INFO ]: trace histogram [18, 18, 18, 17, 16, 14, 14, 8, 7, 7, 7, 7, 7, 7, 6, 6, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:48:16,564 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:48:16,564 INFO ]: Analyzing trace with hash -794177265, now seen corresponding path program 1 times [2018-06-22 01:48:16,564 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:48:16,564 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:48:16,565 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:48:16,565 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:48:16,565 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:48:16,579 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:48:16,690 INFO ]: Checked inductivity of 1369 backedges. 85 proven. 143 refuted. 0 times theorem prover too weak. 1141 trivial. 0 not checked. [2018-06-22 01:48:16,690 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:48:16,690 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:48:16,699 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:48:16,795 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:48:16,806 INFO ]: Computing forward predicates... [2018-06-22 01:48:16,845 INFO ]: Checked inductivity of 1369 backedges. 548 proven. 6 refuted. 0 times theorem prover too weak. 815 trivial. 0 not checked. [2018-06-22 01:48:16,878 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:48:16,890 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-22 01:48:16,891 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:48:16,891 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:48:16,891 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:48:16,891 INFO ]: Start difference. First operand 282 states and 506 transitions. Second operand 4 states. [2018-06-22 01:48:17,240 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:48:17,241 INFO ]: Finished difference Result 203 states and 283 transitions. [2018-06-22 01:48:17,241 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:48:17,241 INFO ]: Start accepts. Automaton has 4 states. Word has length 223 [2018-06-22 01:48:17,241 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:48:17,241 INFO ]: With dead ends: 203 [2018-06-22 01:48:17,241 INFO ]: Without dead ends: 0 [2018-06-22 01:48:17,241 INFO ]: 0 DeclaredPredicates, 228 GetRequests, 225 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 01:48:17,241 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:48:17,241 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:48:17,241 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:48:17,242 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:48:17,242 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 223 [2018-06-22 01:48:17,242 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:48:17,242 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:48:17,242 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:48:17,242 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:48:17,242 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:48:17,246 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:48:17 BoogieIcfgContainer [2018-06-22 01:48:17,246 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:48:17,246 INFO ]: Toolchain (without parser) took 16039.92 ms. Allocated memory was 299.9 MB in the beginning and 477.6 MB in the end (delta: 177.7 MB). Free memory was 252.3 MB in the beginning and 188.8 MB in the end (delta: 63.4 MB). Peak memory consumption was 241.2 MB. Max. memory is 3.6 GB. [2018-06-22 01:48:17,247 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 299.9 MB. Free memory is still 265.4 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:48:17,248 INFO ]: ChcToBoogie took 72.58 ms. Allocated memory is still 299.9 MB. Free memory was 252.3 MB in the beginning and 250.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:48:17,248 INFO ]: Boogie Preprocessor took 41.12 ms. Allocated memory is still 299.9 MB. Free memory was 250.3 MB in the beginning and 248.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:48:17,249 INFO ]: RCFGBuilder took 408.76 ms. Allocated memory is still 299.9 MB. Free memory was 248.3 MB in the beginning and 233.3 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:48:17,249 INFO ]: TraceAbstraction took 15505.28 ms. Allocated memory was 299.9 MB in the beginning and 477.6 MB in the end (delta: 177.7 MB). Free memory was 233.3 MB in the beginning and 188.8 MB in the end (delta: 44.5 MB). Peak memory consumption was 222.2 MB. Max. memory is 3.6 GB. [2018-06-22 01:48:17,252 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 299.9 MB. Free memory is still 265.4 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 72.58 ms. Allocated memory is still 299.9 MB. Free memory was 252.3 MB in the beginning and 250.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 41.12 ms. Allocated memory is still 299.9 MB. Free memory was 250.3 MB in the beginning and 248.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 408.76 ms. Allocated memory is still 299.9 MB. Free memory was 248.3 MB in the beginning and 233.3 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 15505.28 ms. Allocated memory was 299.9 MB in the beginning and 477.6 MB in the end (delta: 177.7 MB). Free memory was 233.3 MB in the beginning and 188.8 MB in the end (delta: 44.5 MB). Peak memory consumption was 222.2 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, 39 locations, 1 error locations. SAFE Result, 15.4s OverallTime, 9 OverallIterations, 18 TraceHistogramMax, 12.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 764 SDtfs, 989 SDslu, 2768 SDs, 0 SdLazy, 4593 SolverSat, 1163 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 744 GetRequests, 655 SyntacticMatches, 2 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred in iteration=8, 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: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 474 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 1297 NumberOfCodeBlocks, 1297 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1282 ConstructedInterpolants, 0 QuantifiedInterpolants, 229728 SizeOfPredicates, 23 NumberOfNonLiveVariables, 2645 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 4791/5060 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/inc3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-48-17-262.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/inc3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-48-17-262.csv Received shutdown request...