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/vmt-chc-benchmarks/ctigar/fragtest_simple.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 05:24:39,761 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 05:24:39,789 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 05:24:39,807 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 05:24:39,807 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 05:24:39,809 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 05:24:39,810 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 05:24:39,812 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 05:24:39,813 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 05:24:39,814 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 05:24:39,815 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 05:24:39,815 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 05:24:39,818 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 05:24:39,822 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 05:24:39,823 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 05:24:39,824 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 05:24:39,826 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 05:24:39,828 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 05:24:39,829 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 05:24:39,837 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 05:24:39,839 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 05:24:39,841 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 05:24:39,841 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 05:24:39,841 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 05:24:39,842 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 05:24:39,843 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 05:24:39,844 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 05:24:39,845 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 05:24:39,846 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 05:24:39,846 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 05:24:39,847 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 05:24:39,848 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 05:24:39,848 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 05:24:39,849 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 05:24:39,855 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 05:24:39,856 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 05:24:39,879 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 05:24:39,879 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 05:24:39,879 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 05:24:39,879 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 05:24:39,880 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 05:24:39,881 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 05:24:39,882 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 05:24:39,882 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 05:24:39,882 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 05:24:39,882 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 05:24:39,882 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 05:24:39,883 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 05:24:39,883 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 05:24:39,883 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 05:24:39,883 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 05:24:39,883 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 05:24:39,884 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 05:24:39,886 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 05:24:39,886 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 05:24:39,935 INFO ]: Repository-Root is: /tmp [2018-06-22 05:24:39,968 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 05:24:39,974 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 05:24:39,975 INFO ]: Initializing SmtParser... [2018-06-22 05:24:39,976 INFO ]: SmtParser initialized [2018-06-22 05:24:39,976 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/fragtest_simple.c.smt2 [2018-06-22 05:24:39,978 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 05:24:40,666 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/fragtest_simple.c.smt2 unknown [2018-06-22 05:24:41,149 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/fragtest_simple.c.smt2 [2018-06-22 05:24:41,154 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 05:24:41,161 INFO ]: Walking toolchain with 4 elements. [2018-06-22 05:24:41,161 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 05:24:41,161 INFO ]: Initializing ChcToBoogie... [2018-06-22 05:24:41,161 INFO ]: ChcToBoogie initialized [2018-06-22 05:24:41,223 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:24:41" (1/1) ... [2018-06-22 05:24:41,632 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:24:41 Unit [2018-06-22 05:24:41,632 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 05:24:41,637 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 05:24:41,637 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 05:24:41,637 INFO ]: Boogie Preprocessor initialized [2018-06-22 05:24:41,733 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:24:41" (1/1) ... [2018-06-22 05:24:41,733 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:24:41" (1/1) ... [2018-06-22 05:24:41,744 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:24:41" (1/1) ... [2018-06-22 05:24:41,745 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:24:41" (1/1) ... [2018-06-22 05:24:41,762 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:24:41" (1/1) ... [2018-06-22 05:24:41,763 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:24:41" (1/1) ... [2018-06-22 05:24:41,765 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:24:41" (1/1) ... [2018-06-22 05:24:41,776 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 05:24:41,777 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 05:24:41,777 INFO ]: Initializing RCFGBuilder... [2018-06-22 05:24:41,777 INFO ]: RCFGBuilder initialized [2018-06-22 05:24:41,778 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:24:41" (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 05:24:41,801 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 05:24:41,801 INFO ]: Found specification of procedure gotoProc [2018-06-22 05:24:41,801 INFO ]: Found implementation of procedure gotoProc [2018-06-22 05:24:41,802 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 05:24:41,802 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 05:24:41,802 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 05:24:42,140 INFO ]: Using library mode [2018-06-22 05:24:42,140 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:24:42 BoogieIcfgContainer [2018-06-22 05:24:42,141 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 05:24:42,142 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 05:24:42,142 INFO ]: Initializing TraceAbstraction... [2018-06-22 05:24:42,278 INFO ]: TraceAbstraction initialized [2018-06-22 05:24:42,278 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:24:41" (1/3) ... [2018-06-22 05:24:42,279 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b80af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 05:24:42, skipping insertion in model container [2018-06-22 05:24:42,280 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:24:41" (2/3) ... [2018-06-22 05:24:42,280 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b80af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:24:42, skipping insertion in model container [2018-06-22 05:24:42,280 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:24:42" (3/3) ... [2018-06-22 05:24:42,281 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 05:24:42,548 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 05:24:42,564 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 05:24:42,931 INFO ]: Using default assertion order modulation [2018-06-22 05:24:42,932 INFO ]: Interprodecural is true [2018-06-22 05:24:42,932 INFO ]: Hoare is false [2018-06-22 05:24:42,932 INFO ]: Compute interpolants for FPandBP [2018-06-22 05:24:42,932 INFO ]: Backedges is TWOTRACK [2018-06-22 05:24:42,932 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 05:24:42,932 INFO ]: Difference is false [2018-06-22 05:24:42,932 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 05:24:42,932 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 05:24:42,981 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 05:24:43,032 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 05:24:43,032 INFO ]: Found error trace [2018-06-22 05:24:43,051 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:24:43,051 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:24:43,071 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 05:24:43,073 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:24:43,073 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:24:43,168 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:24:43,168 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:24:43,168 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:24:43,260 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:24:43,326 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:24:43,328 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 05:24:43,328 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 05:24:43,416 INFO ]: Interpolant automaton has 3 states [2018-06-22 05:24:43,427 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 05:24:43,427 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:24:43,469 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 05:24:43,566 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:24:43,566 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 05:24:43,567 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 05:24:43,568 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 05:24:43,569 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:24:43,590 INFO ]: With dead ends: 9 [2018-06-22 05:24:43,590 INFO ]: Without dead ends: 9 [2018-06-22 05:24:43,592 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:24:43,651 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 05:24:43,674 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 05:24:43,676 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 05:24:43,676 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 05:24:43,678 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 05:24:43,678 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:24:43,678 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 05:24:43,678 INFO ]: Interpolant automaton has 3 states. [2018-06-22 05:24:43,678 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 05:24:43,678 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 05:24:43,678 INFO ]: Found error trace [2018-06-22 05:24:43,679 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:24:43,679 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:24:43,679 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 05:24:43,679 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:24:43,679 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:24:43,680 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:24:43,680 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:24:43,680 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:24:43,730 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:24:43,903 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:24:43,904 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:24:43,904 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 05:24:43,910 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:24:43,973 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:24:43,985 INFO ]: Computing forward predicates... [2018-06-22 05:24:44,317 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:24:44,354 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:24:44,354 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 05:24:44,355 INFO ]: Interpolant automaton has 5 states [2018-06-22 05:24:44,355 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 05:24:44,355 INFO ]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 05:24:44,355 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 05:24:44,582 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:24:44,582 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 05:24:44,583 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 05:24:44,583 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 05:24:44,583 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:24:44,583 INFO ]: With dead ends: 11 [2018-06-22 05:24:44,583 INFO ]: Without dead ends: 11 [2018-06-22 05:24:44,584 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-06-22 05:24:44,584 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 05:24:44,585 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 05:24:44,585 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 05:24:44,586 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 05:24:44,586 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 05:24:44,586 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:24:44,586 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 05:24:44,586 INFO ]: Interpolant automaton has 5 states. [2018-06-22 05:24:44,586 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 05:24:44,586 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 05:24:44,586 INFO ]: Found error trace [2018-06-22 05:24:44,586 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:24:44,588 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:24:44,588 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 2 times [2018-06-22 05:24:44,588 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:24:44,588 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:24:44,590 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:24:44,590 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:24:44,590 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:24:44,702 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:24:45,088 WARN ]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-22 05:24:45,168 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:24:45,169 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:24:45,169 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 05:24:45,176 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 05:24:45,278 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 05:24:45,278 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:24:45,282 INFO ]: Computing forward predicates... [2018-06-22 05:24:49,251 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:24:49,285 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:24:49,285 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-22 05:24:49,285 INFO ]: Interpolant automaton has 7 states [2018-06-22 05:24:49,285 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 05:24:49,286 INFO ]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-22 05:24:49,286 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2018-06-22 05:24:49,629 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:24:49,629 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 05:24:49,629 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 05:24:49,629 INFO ]: Start accepts. Automaton has 7 states. Word has length 10 [2018-06-22 05:24:49,629 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:24:49,629 INFO ]: With dead ends: 13 [2018-06-22 05:24:49,629 INFO ]: Without dead ends: 13 [2018-06-22 05:24:49,630 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2018-06-22 05:24:49,630 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 05:24:49,631 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 05:24:49,631 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 05:24:49,632 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 05:24:49,632 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-22 05:24:49,632 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:24:49,632 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 05:24:49,632 INFO ]: Interpolant automaton has 7 states. [2018-06-22 05:24:49,632 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 05:24:49,632 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 05:24:49,632 INFO ]: Found error trace [2018-06-22 05:24:49,632 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:24:49,633 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:24:49,633 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 3 times [2018-06-22 05:24:49,633 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:24:49,633 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:24:49,634 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:24:49,636 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:24:49,636 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:24:49,741 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:24:50,000 WARN ]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2018-06-22 05:24:50,210 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:24:50,210 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:24:50,211 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) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:24:50,220 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 05:24:50,334 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 05:24:50,334 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:24:50,340 INFO ]: Computing forward predicates... [2018-06-22 05:24:55,805 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:24:55,967 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:25:26,881 WARN ]: Spent 109.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 14 [2018-06-22 05:25:35,703 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:25:35,716 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:25:35,740 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:25:35,748 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:25:35,889 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:25:35,917 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 05:25:36,562 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:25:36,570 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:25:36,585 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:25:36,612 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:25:36,639 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:25:36,646 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:25:36,662 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:25:36,671 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:25:36,676 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:25:36,694 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:25:36,830 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:25:36,840 WARN ]: expecting exponential blowup for input size 6 Received shutdown request... [2018-06-22 05:25:48,631 INFO ]: Timeout while computing interpolants [2018-06-22 05:25:48,853 WARN ]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:25:48,853 WARN ]: Verification canceled [2018-06-22 05:25:48,857 WARN ]: Timeout [2018-06-22 05:25:48,857 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:25:48 BoogieIcfgContainer [2018-06-22 05:25:48,857 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 05:25:48,858 INFO ]: Toolchain (without parser) took 67703.71 ms. Allocated memory was 303.6 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 253.9 MB in the beginning and 492.4 MB in the end (delta: -238.4 MB). Peak memory consumption was 1.4 GB. Max. memory is 3.6 GB. [2018-06-22 05:25:48,859 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 303.6 MB. Free memory is still 269.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 05:25:48,860 INFO ]: ChcToBoogie took 471.07 ms. Allocated memory is still 303.6 MB. Free memory was 252.9 MB in the beginning and 250.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:25:48,861 INFO ]: Boogie Preprocessor took 139.20 ms. Allocated memory is still 303.6 MB. Free memory was 250.9 MB in the beginning and 249.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:25:48,864 INFO ]: RCFGBuilder took 363.56 ms. Allocated memory is still 303.6 MB. Free memory was 249.9 MB in the beginning and 237.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:25:48,864 INFO ]: TraceAbstraction took 66714.96 ms. Allocated memory was 303.6 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 237.9 MB in the beginning and 492.4 MB in the end (delta: -254.5 MB). Peak memory consumption was 1.4 GB. Max. memory is 3.6 GB. [2018-06-22 05:25:48,868 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 303.6 MB. Free memory is still 269.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 471.07 ms. Allocated memory is still 303.6 MB. Free memory was 252.9 MB in the beginning and 250.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 139.20 ms. Allocated memory is still 303.6 MB. Free memory was 250.9 MB in the beginning and 249.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 363.56 ms. Allocated memory is still 303.6 MB. Free memory was 249.9 MB in the beginning and 237.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 66714.96 ms. Allocated memory was 303.6 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 237.9 MB in the beginning and 492.4 MB in the end (delta: -254.5 MB). Peak memory consumption was 1.4 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 BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while XnfDer was eliminating 53282 quantified variables from 12 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 65.9s OverallTime, 4 OverallIterations, 5 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 2 SDslu, 38 SDs, 0 SdLazy, 18 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 902 SizeOfPredicates, 10 NumberOfNonLiveVariables, 318 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/14 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/fragtest_simple.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_05-25-48-890.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/fragtest_simple.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_05-25-48-890.csv Completed graceful shutdown