java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental2.41.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 00:45:50,739 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 00:45:50,741 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 00:45:50,756 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 00:45:50,757 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 00:45:50,757 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 00:45:50,759 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 00:45:50,761 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 00:45:50,763 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 00:45:50,763 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 00:45:50,766 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 00:45:50,766 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 00:45:50,767 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 00:45:50,768 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 00:45:50,770 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 00:45:50,771 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 00:45:50,772 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 00:45:50,783 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 00:45:50,785 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 00:45:50,786 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 00:45:50,787 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 00:45:50,789 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 00:45:50,789 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 00:45:50,789 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 00:45:50,790 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 00:45:50,791 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 00:45:50,799 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 00:45:50,800 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 00:45:50,801 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 00:45:50,801 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 00:45:50,801 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 00:45:50,802 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 00:45:50,802 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 00:45:50,803 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 00:45:50,803 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 00:45:50,804 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 00:45:50,817 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 00:45:50,817 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 00:45:50,817 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 00:45:50,818 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 00:45:50,819 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 00:45:50,819 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 00:45:50,819 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 00:45:50,819 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 00:45:50,819 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 00:45:50,820 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 00:45:50,820 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 00:45:50,820 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 00:45:50,820 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 00:45:50,820 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 00:45:50,820 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 00:45:50,821 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 00:45:50,821 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 00:45:50,822 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 00:45:50,822 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 00:45:50,863 INFO ]: Repository-Root is: /tmp [2018-06-22 00:45:50,882 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 00:45:50,885 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 00:45:50,886 INFO ]: Initializing SmtParser... [2018-06-22 00:45:50,887 INFO ]: SmtParser initialized [2018-06-22 00:45:50,887 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental2.41.smt2 [2018-06-22 00:45:50,888 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 00:45:50,976 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental2.41.smt2 unknown [2018-06-22 00:45:51,700 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental2.41.smt2 [2018-06-22 00:45:51,707 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 00:45:51,713 INFO ]: Walking toolchain with 4 elements. [2018-06-22 00:45:51,713 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 00:45:51,713 INFO ]: Initializing ChcToBoogie... [2018-06-22 00:45:51,714 INFO ]: ChcToBoogie initialized [2018-06-22 00:45:51,717 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:45:51" (1/1) ... [2018-06-22 00:45:51,833 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:45:51 Unit [2018-06-22 00:45:51,834 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 00:45:51,834 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 00:45:51,834 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 00:45:51,834 INFO ]: Boogie Preprocessor initialized [2018-06-22 00:45:51,857 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:45:51" (1/1) ... [2018-06-22 00:45:51,857 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:45:51" (1/1) ... [2018-06-22 00:45:51,880 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:45:51" (1/1) ... [2018-06-22 00:45:51,881 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:45:51" (1/1) ... [2018-06-22 00:45:51,906 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:45:51" (1/1) ... [2018-06-22 00:45:51,911 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:45:51" (1/1) ... [2018-06-22 00:45:51,918 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:45:51" (1/1) ... [2018-06-22 00:45:51,931 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 00:45:51,932 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 00:45:51,932 INFO ]: Initializing RCFGBuilder... [2018-06-22 00:45:51,932 INFO ]: RCFGBuilder initialized [2018-06-22 00:45:51,933 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:45:51" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 00:45:51,958 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 00:45:51,958 INFO ]: Found specification of procedure gotoProc [2018-06-22 00:45:51,958 INFO ]: Found implementation of procedure gotoProc [2018-06-22 00:45:51,958 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 00:45:51,958 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 00:45:51,958 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 00:45:54,609 INFO ]: Using library mode [2018-06-22 00:45:54,610 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:45:54 BoogieIcfgContainer [2018-06-22 00:45:54,610 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 00:45:54,611 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 00:45:54,611 INFO ]: Initializing TraceAbstraction... [2018-06-22 00:45:54,614 INFO ]: TraceAbstraction initialized [2018-06-22 00:45:54,614 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:45:51" (1/3) ... [2018-06-22 00:45:54,615 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545d53dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 12:45:54, skipping insertion in model container [2018-06-22 00:45:54,615 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:45:51" (2/3) ... [2018-06-22 00:45:54,616 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545d53dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 12:45:54, skipping insertion in model container [2018-06-22 00:45:54,616 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:45:54" (3/3) ... [2018-06-22 00:45:54,617 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 00:45:54,627 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 00:45:54,635 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 00:45:54,677 INFO ]: Using default assertion order modulation [2018-06-22 00:45:54,678 INFO ]: Interprodecural is true [2018-06-22 00:45:54,678 INFO ]: Hoare is false [2018-06-22 00:45:54,678 INFO ]: Compute interpolants for FPandBP [2018-06-22 00:45:54,678 INFO ]: Backedges is TWOTRACK [2018-06-22 00:45:54,678 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 00:45:54,678 INFO ]: Difference is false [2018-06-22 00:45:54,678 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 00:45:54,678 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 00:45:54,698 INFO ]: Start isEmpty. Operand 146 states. [2018-06-22 00:45:54,717 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 00:45:54,717 INFO ]: Found error trace [2018-06-22 00:45:54,718 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:45:54,719 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:45:54,724 INFO ]: Analyzing trace with hash 1499583065, now seen corresponding path program 1 times [2018-06-22 00:45:54,725 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:45:54,726 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:45:54,758 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:45:54,758 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:45:54,758 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:45:54,814 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:45:55,160 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:45:55,162 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:45:55,162 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 00:45:55,163 INFO ]: Interpolant automaton has 4 states [2018-06-22 00:45:55,174 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 00:45:55,174 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 00:45:55,176 INFO ]: Start difference. First operand 146 states. Second operand 4 states. [2018-06-22 00:45:57,625 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:45:57,625 INFO ]: Finished difference Result 285 states and 555 transitions. [2018-06-22 00:45:57,625 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 00:45:57,626 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 00:45:57,627 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:45:57,668 INFO ]: With dead ends: 285 [2018-06-22 00:45:57,668 INFO ]: Without dead ends: 275 [2018-06-22 00:45:57,670 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 00:45:57,688 INFO ]: Start minimizeSevpa. Operand 275 states. [2018-06-22 00:45:57,806 INFO ]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-06-22 00:45:57,808 INFO ]: Start removeUnreachable. Operand 275 states. [2018-06-22 00:45:57,834 INFO ]: Finished removeUnreachable. Reduced from 275 states to 275 states and 537 transitions. [2018-06-22 00:45:57,835 INFO ]: Start accepts. Automaton has 275 states and 537 transitions. Word has length 8 [2018-06-22 00:45:57,837 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:45:57,837 INFO ]: Abstraction has 275 states and 537 transitions. [2018-06-22 00:45:57,837 INFO ]: Interpolant automaton has 4 states. [2018-06-22 00:45:57,837 INFO ]: Start isEmpty. Operand 275 states and 537 transitions. [2018-06-22 00:45:57,845 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 00:45:57,846 INFO ]: Found error trace [2018-06-22 00:45:57,846 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:45:57,846 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:45:57,846 INFO ]: Analyzing trace with hash 1360220767, now seen corresponding path program 1 times [2018-06-22 00:45:57,846 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:45:57,846 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:45:57,847 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:45:57,847 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:45:57,847 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:45:57,866 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:45:58,061 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:45:58,062 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:45:58,062 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 00:45:58,063 INFO ]: Interpolant automaton has 4 states [2018-06-22 00:45:58,063 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 00:45:58,063 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 00:45:58,064 INFO ]: Start difference. First operand 275 states and 537 transitions. Second operand 4 states. [2018-06-22 00:45:59,875 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:45:59,875 INFO ]: Finished difference Result 411 states and 804 transitions. [2018-06-22 00:45:59,875 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 00:45:59,875 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 00:45:59,875 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:45:59,897 INFO ]: With dead ends: 411 [2018-06-22 00:45:59,897 INFO ]: Without dead ends: 411 [2018-06-22 00:45:59,898 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 00:45:59,898 INFO ]: Start minimizeSevpa. Operand 411 states. [2018-06-22 00:46:00,000 INFO ]: Finished minimizeSevpa. Reduced states from 411 to 411. [2018-06-22 00:46:00,000 INFO ]: Start removeUnreachable. Operand 411 states. [2018-06-22 00:46:00,018 INFO ]: Finished removeUnreachable. Reduced from 411 states to 411 states and 804 transitions. [2018-06-22 00:46:00,018 INFO ]: Start accepts. Automaton has 411 states and 804 transitions. Word has length 8 [2018-06-22 00:46:00,018 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:46:00,018 INFO ]: Abstraction has 411 states and 804 transitions. [2018-06-22 00:46:00,018 INFO ]: Interpolant automaton has 4 states. [2018-06-22 00:46:00,019 INFO ]: Start isEmpty. Operand 411 states and 804 transitions. [2018-06-22 00:46:00,051 INFO ]: Finished isEmpty. Found accepting run of length 19 [2018-06-22 00:46:00,051 INFO ]: Found error trace [2018-06-22 00:46:00,051 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:46:00,051 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:46:00,051 INFO ]: Analyzing trace with hash -1687364305, now seen corresponding path program 1 times [2018-06-22 00:46:00,051 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:46:00,051 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:46:00,052 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:46:00,052 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:46:00,052 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:46:00,112 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:46:00,688 INFO ]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 00:46:00,688 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:46:00,689 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-22 00:46:00,689 INFO ]: Interpolant automaton has 7 states [2018-06-22 00:46:00,689 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 00:46:00,689 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 00:46:00,689 INFO ]: Start difference. First operand 411 states and 804 transitions. Second operand 7 states. [2018-06-22 00:46:10,007 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:46:10,008 INFO ]: Finished difference Result 1521 states and 8532 transitions. [2018-06-22 00:46:10,008 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 00:46:10,008 INFO ]: Start accepts. Automaton has 7 states. Word has length 18 [2018-06-22 00:46:10,008 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:46:10,598 INFO ]: With dead ends: 1521 [2018-06-22 00:46:10,598 INFO ]: Without dead ends: 1521 [2018-06-22 00:46:10,599 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-06-22 00:46:10,600 INFO ]: Start minimizeSevpa. Operand 1521 states. [2018-06-22 00:46:11,461 INFO ]: Finished minimizeSevpa. Reduced states from 1521 to 960. [2018-06-22 00:46:11,461 INFO ]: Start removeUnreachable. Operand 960 states. [2018-06-22 00:46:11,523 INFO ]: Finished removeUnreachable. Reduced from 960 states to 960 states and 2424 transitions. [2018-06-22 00:46:11,523 INFO ]: Start accepts. Automaton has 960 states and 2424 transitions. Word has length 18 [2018-06-22 00:46:11,523 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:46:11,523 INFO ]: Abstraction has 960 states and 2424 transitions. [2018-06-22 00:46:11,523 INFO ]: Interpolant automaton has 7 states. [2018-06-22 00:46:11,523 INFO ]: Start isEmpty. Operand 960 states and 2424 transitions. [2018-06-22 00:46:11,561 INFO ]: Finished isEmpty. Found accepting run of length 19 [2018-06-22 00:46:11,561 INFO ]: Found error trace [2018-06-22 00:46:11,562 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:46:11,562 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:46:11,563 INFO ]: Analyzing trace with hash -748729423, now seen corresponding path program 1 times [2018-06-22 00:46:11,563 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:46:11,563 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:46:11,563 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:46:11,563 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:46:11,563 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:46:11,625 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:46:12,194 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 00:46:12,194 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 00:46:12,194 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 00:46:12,201 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:46:12,293 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:46:12,304 INFO ]: Computing forward predicates... [2018-06-22 00:46:12,636 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 00:46:12,670 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 00:46:12,671 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-06-22 00:46:12,671 INFO ]: Interpolant automaton has 9 states [2018-06-22 00:46:12,671 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 00:46:12,671 INFO ]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-06-22 00:46:12,671 INFO ]: Start difference. First operand 960 states and 2424 transitions. Second operand 9 states. [2018-06-22 00:46:31,521 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:46:31,521 INFO ]: Finished difference Result 3928 states and 33849 transitions. [2018-06-22 00:46:31,524 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 00:46:31,524 INFO ]: Start accepts. Automaton has 9 states. Word has length 18 [2018-06-22 00:46:31,524 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:46:33,465 INFO ]: With dead ends: 3928 [2018-06-22 00:46:33,465 INFO ]: Without dead ends: 3928 [2018-06-22 00:46:33,465 INFO ]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2018-06-22 00:46:33,467 INFO ]: Start minimizeSevpa. Operand 3928 states. [2018-06-22 00:46:36,589 INFO ]: Finished minimizeSevpa. Reduced states from 3928 to 2079. [2018-06-22 00:46:36,589 INFO ]: Start removeUnreachable. Operand 2079 states. [2018-06-22 00:46:36,786 INFO ]: Finished removeUnreachable. Reduced from 2079 states to 2079 states and 6891 transitions. [2018-06-22 00:46:36,787 INFO ]: Start accepts. Automaton has 2079 states and 6891 transitions. Word has length 18 [2018-06-22 00:46:36,787 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:46:36,787 INFO ]: Abstraction has 2079 states and 6891 transitions. [2018-06-22 00:46:36,787 INFO ]: Interpolant automaton has 9 states. [2018-06-22 00:46:36,787 INFO ]: Start isEmpty. Operand 2079 states and 6891 transitions. [2018-06-22 00:46:36,869 INFO ]: Finished isEmpty. Found accepting run of length 20 [2018-06-22 00:46:36,869 INFO ]: Found error trace [2018-06-22 00:46:36,870 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:46:36,870 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:46:36,871 INFO ]: Analyzing trace with hash 477662245, now seen corresponding path program 1 times [2018-06-22 00:46:36,871 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:46:36,871 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:46:36,872 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:46:36,872 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:46:36,872 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:46:36,928 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:46:37,145 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 00:46:37,146 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 00:46:37,146 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 00:46:37,152 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:46:37,241 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:46:37,245 INFO ]: Computing forward predicates... [2018-06-22 00:46:37,354 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 00:46:37,376 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 00:46:37,376 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-22 00:46:37,377 INFO ]: Interpolant automaton has 14 states [2018-06-22 00:46:37,377 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 00:46:37,377 INFO ]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-06-22 00:46:37,377 INFO ]: Start difference. First operand 2079 states and 6891 transitions. Second operand 14 states. Received shutdown request... [2018-06-22 00:46:49,549 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-06-22 00:46:49,549 WARN ]: Verification canceled [2018-06-22 00:46:49,556 WARN ]: Timeout [2018-06-22 00:46:49,556 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 12:46:49 BoogieIcfgContainer [2018-06-22 00:46:49,556 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 00:46:49,556 INFO ]: Toolchain (without parser) took 57848.82 ms. Allocated memory was 307.2 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 213.8 MB in the beginning and 1.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 148.0 MB. Max. memory is 3.6 GB. [2018-06-22 00:46:49,558 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 00:46:49,558 INFO ]: ChcToBoogie took 120.60 ms. Allocated memory is still 307.2 MB. Free memory was 213.8 MB in the beginning and 207.8 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. [2018-06-22 00:46:49,559 INFO ]: Boogie Preprocessor took 97.20 ms. Allocated memory is still 307.2 MB. Free memory was 207.8 MB in the beginning and 204.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 00:46:49,559 INFO ]: RCFGBuilder took 2677.86 ms. Allocated memory was 307.2 MB in the beginning and 351.8 MB in the end (delta: 44.6 MB). Free memory was 204.8 MB in the beginning and 304.2 MB in the end (delta: -99.4 MB). Peak memory consumption was 47.6 MB. Max. memory is 3.6 GB. [2018-06-22 00:46:49,560 INFO ]: TraceAbstraction took 54944.79 ms. Allocated memory was 351.8 MB in the beginning and 1.5 GB in the end (delta: 1.1 GB). Free memory was 304.2 MB in the beginning and 1.3 GB in the end (delta: -949.1 MB). Peak memory consumption was 193.9 MB. Max. memory is 3.6 GB. [2018-06-22 00:46:49,563 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 307.2 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 120.60 ms. Allocated memory is still 307.2 MB. Free memory was 213.8 MB in the beginning and 207.8 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 97.20 ms. Allocated memory is still 307.2 MB. Free memory was 207.8 MB in the beginning and 204.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 2677.86 ms. Allocated memory was 307.2 MB in the beginning and 351.8 MB in the end (delta: 44.6 MB). Free memory was 204.8 MB in the beginning and 304.2 MB in the end (delta: -99.4 MB). Peak memory consumption was 47.6 MB. Max. memory is 3.6 GB. * TraceAbstraction took 54944.79 ms. Allocated memory was 351.8 MB in the beginning and 1.5 GB in the end (delta: 1.1 GB). Free memory was 304.2 MB in the beginning and 1.3 GB in the end (delta: -949.1 MB). Peak memory consumption was 193.9 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was constructing difference of abstraction (2079states) and interpolant automaton (currently 31 states, 14 states before enhancement), while ReachableStatesComputation was computing reachable states (2722 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 146 locations, 1 error locations. TIMEOUT Result, 54.8s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 47.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3567 SDtfs, 1433 SDslu, 8187 SDs, 0 SdLazy, 29065 SolverSat, 6592 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 36.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2079occurred 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: 4.5s AutomataMinimizationTime, 4 MinimizatonAttempts, 2410 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 4405 SizeOfPredicates, 17 NumberOfNonLiveVariables, 1762 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 20/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/incremental2.41.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_00-46-49-573.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/incremental2.41.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_00-46-49-573.csv Completed graceful shutdown