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/graham.28.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 00:41:56,516 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 00:41:56,518 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 00:41:56,534 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 00:41:56,534 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 00:41:56,536 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 00:41:56,537 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 00:41:56,541 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 00:41:56,542 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 00:41:56,544 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 00:41:56,545 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 00:41:56,545 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 00:41:56,546 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 00:41:56,547 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 00:41:56,547 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 00:41:56,552 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 00:41:56,554 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 00:41:56,567 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 00:41:56,569 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 00:41:56,570 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 00:41:56,571 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 00:41:56,573 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-06-22 00:41:56,587 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 00:41:56,608 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 00:41:56,608 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 00:41:56,609 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 00:41:56,609 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 00:41:56,610 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 00:41:56,610 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 00:41:56,610 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 00:41:56,610 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 00:41:56,611 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 00:41:56,612 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 00:41:56,612 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 00:41:56,612 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 00:41:56,612 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 00:41:56,612 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 00:41:56,613 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 00:41:56,613 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 00:41:56,613 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 00:41:56,614 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 00:41:56,614 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 00:41:56,672 INFO ]: Repository-Root is: /tmp [2018-06-22 00:41:56,686 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 00:41:56,692 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 00:41:56,693 INFO ]: Initializing SmtParser... [2018-06-22 00:41:56,694 INFO ]: SmtParser initialized [2018-06-22 00:41:56,694 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/Consistency/graham.28.smt2 [2018-06-22 00:41:56,696 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 00:41:56,782 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/graham.28.smt2 unknown [2018-06-22 00:41:57,704 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/graham.28.smt2 [2018-06-22 00:41:57,710 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 00:41:57,715 INFO ]: Walking toolchain with 4 elements. [2018-06-22 00:41:57,716 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 00:41:57,716 INFO ]: Initializing ChcToBoogie... [2018-06-22 00:41:57,716 INFO ]: ChcToBoogie initialized [2018-06-22 00:41:57,719 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:41:57" (1/1) ... [2018-06-22 00:41:57,817 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:41:57 Unit [2018-06-22 00:41:57,818 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 00:41:57,818 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 00:41:57,818 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 00:41:57,818 INFO ]: Boogie Preprocessor initialized [2018-06-22 00:41:57,839 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:41:57" (1/1) ... [2018-06-22 00:41:57,840 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:41:57" (1/1) ... [2018-06-22 00:41:57,862 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:41:57" (1/1) ... [2018-06-22 00:41:57,862 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:41:57" (1/1) ... [2018-06-22 00:41:57,886 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:41:57" (1/1) ... [2018-06-22 00:41:57,894 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:41:57" (1/1) ... [2018-06-22 00:41:57,897 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:41:57" (1/1) ... [2018-06-22 00:41:57,908 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 00:41:57,909 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 00:41:57,909 INFO ]: Initializing RCFGBuilder... [2018-06-22 00:41:57,909 INFO ]: RCFGBuilder initialized [2018-06-22 00:41:57,910 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:41:57" (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 00:41:57,922 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 00:41:57,922 INFO ]: Found specification of procedure gotoProc [2018-06-22 00:41:57,922 INFO ]: Found implementation of procedure gotoProc [2018-06-22 00:41:57,922 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 00:41:57,922 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 00:41:57,922 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 00:42:00,140 INFO ]: Using library mode [2018-06-22 00:42:00,141 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:42:00 BoogieIcfgContainer [2018-06-22 00:42:00,141 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 00:42:00,142 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 00:42:00,142 INFO ]: Initializing TraceAbstraction... [2018-06-22 00:42:00,145 INFO ]: TraceAbstraction initialized [2018-06-22 00:42:00,145 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:41:57" (1/3) ... [2018-06-22 00:42:00,146 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f26c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 12:42:00, skipping insertion in model container [2018-06-22 00:42:00,146 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:41:57" (2/3) ... [2018-06-22 00:42:00,146 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f26c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 12:42:00, skipping insertion in model container [2018-06-22 00:42:00,146 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:42:00" (3/3) ... [2018-06-22 00:42:00,148 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 00:42:00,158 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 00:42:00,166 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 00:42:00,210 INFO ]: Using default assertion order modulation [2018-06-22 00:42:00,210 INFO ]: Interprodecural is true [2018-06-22 00:42:00,210 INFO ]: Hoare is false [2018-06-22 00:42:00,210 INFO ]: Compute interpolants for FPandBP [2018-06-22 00:42:00,210 INFO ]: Backedges is TWOTRACK [2018-06-22 00:42:00,210 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 00:42:00,210 INFO ]: Difference is false [2018-06-22 00:42:00,210 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 00:42:00,210 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 00:42:00,230 INFO ]: Start isEmpty. Operand 145 states. [2018-06-22 00:42:00,248 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 00:42:00,248 INFO ]: Found error trace [2018-06-22 00:42:00,249 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:42:00,249 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:42:00,254 INFO ]: Analyzing trace with hash -1431642022, now seen corresponding path program 1 times [2018-06-22 00:42:00,256 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:42:00,256 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:42:00,302 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:42:00,302 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:42:00,302 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:42:00,344 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:42:00,586 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:42:00,588 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:42:00,588 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 00:42:00,590 INFO ]: Interpolant automaton has 4 states [2018-06-22 00:42:00,605 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 00:42:00,606 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 00:42:00,608 INFO ]: Start difference. First operand 145 states. Second operand 4 states. [2018-06-22 00:42:03,937 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:42:03,937 INFO ]: Finished difference Result 283 states and 547 transitions. [2018-06-22 00:42:03,938 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 00:42:03,939 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 00:42:03,939 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:42:03,985 INFO ]: With dead ends: 283 [2018-06-22 00:42:03,985 INFO ]: Without dead ends: 281 [2018-06-22 00:42:03,987 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 00:42:04,007 INFO ]: Start minimizeSevpa. Operand 281 states. [2018-06-22 00:42:04,137 INFO ]: Finished minimizeSevpa. Reduced states from 281 to 281. [2018-06-22 00:42:04,138 INFO ]: Start removeUnreachable. Operand 281 states. [2018-06-22 00:42:04,193 INFO ]: Finished removeUnreachable. Reduced from 281 states to 281 states and 545 transitions. [2018-06-22 00:42:04,195 INFO ]: Start accepts. Automaton has 281 states and 545 transitions. Word has length 8 [2018-06-22 00:42:04,196 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:42:04,196 INFO ]: Abstraction has 281 states and 545 transitions. [2018-06-22 00:42:04,196 INFO ]: Interpolant automaton has 4 states. [2018-06-22 00:42:04,196 INFO ]: Start isEmpty. Operand 281 states and 545 transitions. [2018-06-22 00:42:04,215 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 00:42:04,215 INFO ]: Found error trace [2018-06-22 00:42:04,215 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:42:04,216 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:42:04,216 INFO ]: Analyzing trace with hash -1201759710, now seen corresponding path program 1 times [2018-06-22 00:42:04,216 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:42:04,216 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:42:04,217 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:42:04,217 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:42:04,217 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:42:04,235 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:42:04,430 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:42:04,430 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:42:04,430 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 00:42:04,432 INFO ]: Interpolant automaton has 4 states [2018-06-22 00:42:04,432 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 00:42:04,432 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 00:42:04,432 INFO ]: Start difference. First operand 281 states and 545 transitions. Second operand 4 states. [2018-06-22 00:42:07,088 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:42:07,088 INFO ]: Finished difference Result 420 states and 816 transitions. [2018-06-22 00:42:07,088 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 00:42:07,088 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 00:42:07,088 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:42:07,112 INFO ]: With dead ends: 420 [2018-06-22 00:42:07,112 INFO ]: Without dead ends: 420 [2018-06-22 00:42:07,113 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 00:42:07,114 INFO ]: Start minimizeSevpa. Operand 420 states. [2018-06-22 00:42:07,217 INFO ]: Finished minimizeSevpa. Reduced states from 420 to 420. [2018-06-22 00:42:07,217 INFO ]: Start removeUnreachable. Operand 420 states. [2018-06-22 00:42:07,236 INFO ]: Finished removeUnreachable. Reduced from 420 states to 420 states and 816 transitions. [2018-06-22 00:42:07,236 INFO ]: Start accepts. Automaton has 420 states and 816 transitions. Word has length 9 [2018-06-22 00:42:07,236 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:42:07,236 INFO ]: Abstraction has 420 states and 816 transitions. [2018-06-22 00:42:07,236 INFO ]: Interpolant automaton has 4 states. [2018-06-22 00:42:07,237 INFO ]: Start isEmpty. Operand 420 states and 816 transitions. [2018-06-22 00:42:07,257 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 00:42:07,257 INFO ]: Found error trace [2018-06-22 00:42:07,257 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:42:07,257 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:42:07,258 INFO ]: Analyzing trace with hash 1252749186, now seen corresponding path program 1 times [2018-06-22 00:42:07,258 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:42:07,258 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:42:07,258 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:42:07,258 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:42:07,258 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:42:07,320 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:42:07,781 INFO ]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 00:42:07,781 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:42:07,781 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-22 00:42:07,781 INFO ]: Interpolant automaton has 7 states [2018-06-22 00:42:07,781 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 00:42:07,781 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 00:42:07,781 INFO ]: Start difference. First operand 420 states and 816 transitions. Second operand 7 states. [2018-06-22 00:42:14,199 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:42:14,199 INFO ]: Finished difference Result 1188 states and 5797 transitions. [2018-06-22 00:42:14,199 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-06-22 00:42:14,200 INFO ]: Start accepts. Automaton has 7 states. Word has length 17 [2018-06-22 00:42:14,200 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:42:14,636 INFO ]: With dead ends: 1188 [2018-06-22 00:42:14,636 INFO ]: Without dead ends: 1177 [2018-06-22 00:42:14,636 INFO ]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2018-06-22 00:42:14,638 INFO ]: Start minimizeSevpa. Operand 1177 states. [2018-06-22 00:42:15,263 INFO ]: Finished minimizeSevpa. Reduced states from 1177 to 766. [2018-06-22 00:42:15,264 INFO ]: Start removeUnreachable. Operand 766 states. [2018-06-22 00:42:15,311 INFO ]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1906 transitions. [2018-06-22 00:42:15,311 INFO ]: Start accepts. Automaton has 766 states and 1906 transitions. Word has length 17 [2018-06-22 00:42:15,311 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:42:15,311 INFO ]: Abstraction has 766 states and 1906 transitions. [2018-06-22 00:42:15,311 INFO ]: Interpolant automaton has 7 states. [2018-06-22 00:42:15,311 INFO ]: Start isEmpty. Operand 766 states and 1906 transitions. [2018-06-22 00:42:15,347 INFO ]: Finished isEmpty. Found accepting run of length 19 [2018-06-22 00:42:15,347 INFO ]: Found error trace [2018-06-22 00:42:15,347 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:42:15,347 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:42:15,347 INFO ]: Analyzing trace with hash 882109098, now seen corresponding path program 1 times [2018-06-22 00:42:15,347 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:42:15,347 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:42:15,349 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:42:15,349 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:42:15,349 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:42:15,400 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:42:15,784 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 00:42:15,784 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 00:42:15,784 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 00:42:15,794 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:42:15,857 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:42:15,867 INFO ]: Computing forward predicates... [2018-06-22 00:42:16,787 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 00:42:16,819 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 00:42:16,819 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-22 00:42:16,819 INFO ]: Interpolant automaton has 14 states [2018-06-22 00:42:16,819 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 00:42:16,820 INFO ]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-06-22 00:42:16,820 INFO ]: Start difference. First operand 766 states and 1906 transitions. Second operand 14 states. [2018-06-22 00:42:57,324 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:42:57,324 INFO ]: Finished difference Result 4737 states and 40633 transitions. [2018-06-22 00:42:57,325 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-06-22 00:42:57,325 INFO ]: Start accepts. Automaton has 14 states. Word has length 18 [2018-06-22 00:42:57,325 INFO ]: Finished accepts. some prefix is accepted. Received shutdown request... [2018-06-22 00:42:59,422 INFO ]: With dead ends: 4737 [2018-06-22 00:42:59,423 INFO ]: Without dead ends: 4717 [2018-06-22 00:42:59,423 INFO ]: 0 DeclaredPredicates, 68 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=458, Invalid=2622, Unknown=0, NotChecked=0, Total=3080 [2018-06-22 00:42:59,426 INFO ]: Start minimizeSevpa. Operand 4717 states. [2018-06-22 00:42:59,427 WARN ]: Verification canceled [2018-06-22 00:42:59,431 WARN ]: Timeout [2018-06-22 00:42:59,432 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 12:42:59 BoogieIcfgContainer [2018-06-22 00:42:59,432 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 00:42:59,432 INFO ]: Toolchain (without parser) took 61721.77 ms. Allocated memory was 309.3 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 249.8 MB in the beginning and 762.1 MB in the end (delta: -512.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 00:42:59,434 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 00:42:59,434 INFO ]: ChcToBoogie took 102.07 ms. Allocated memory is still 309.3 MB. Free memory was 248.8 MB in the beginning and 245.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 00:42:59,435 INFO ]: Boogie Preprocessor took 89.87 ms. Allocated memory is still 309.3 MB. Free memory was 245.8 MB in the beginning and 243.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 00:42:59,435 INFO ]: RCFGBuilder took 2231.91 ms. Allocated memory was 309.3 MB in the beginning and 323.5 MB in the end (delta: 14.2 MB). Free memory was 243.8 MB in the beginning and 280.8 MB in the end (delta: -36.9 MB). Peak memory consumption was 61.7 MB. Max. memory is 3.6 GB. [2018-06-22 00:42:59,436 INFO ]: TraceAbstraction took 59290.03 ms. Allocated memory was 323.5 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 280.8 MB in the beginning and 762.1 MB in the end (delta: -481.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 00:42:59,439 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 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 102.07 ms. Allocated memory is still 309.3 MB. Free memory was 248.8 MB in the beginning and 245.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 89.87 ms. Allocated memory is still 309.3 MB. Free memory was 245.8 MB in the beginning and 243.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 2231.91 ms. Allocated memory was 309.3 MB in the beginning and 323.5 MB in the end (delta: 14.2 MB). Free memory was 243.8 MB in the beginning and 280.8 MB in the end (delta: -36.9 MB). Peak memory consumption was 61.7 MB. Max. memory is 3.6 GB. * TraceAbstraction took 59290.03 ms. Allocated memory was 323.5 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 280.8 MB in the beginning and 762.1 MB in the end (delta: -481.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 145 locations, 1 error locations. TIMEOUT Result, 59.2s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 55.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1610 SDtfs, 1373 SDslu, 3597 SDs, 0 SdLazy, 42119 SolverSat, 12155 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 43.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=766occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 4 MinimizatonAttempts, 411 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 2589 SizeOfPredicates, 10 NumberOfNonLiveVariables, 440 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 12/14 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/graham.28.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_00-42-59-450.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/graham.28.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_00-42-59-450.csv Completed graceful shutdown