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/seq-sim.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 05:55:43,813 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 05:55:43,867 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 05:55:43,881 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 05:55:43,882 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 05:55:43,883 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 05:55:43,887 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 05:55:43,890 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 05:55:43,891 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 05:55:43,894 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 05:55:43,895 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 05:55:43,895 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 05:55:43,896 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 05:55:43,900 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 05:55:43,901 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 05:55:43,902 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 05:55:43,907 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 05:55:43,920 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 05:55:43,922 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 05:55:43,923 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 05:55:43,924 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 05:55:43,926 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 05:55:43,927 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 05:55:43,927 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 05:55:43,928 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 05:55:43,933 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 05:55:43,934 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 05:55:43,935 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 05:55:43,942 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 05:55:43,942 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 05:55:43,943 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 05:55:43,944 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 05:55:43,944 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 05:55:43,945 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 05:55:43,946 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 05:55:43,946 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 05:55:43,968 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 05:55:43,968 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 05:55:43,968 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 05:55:43,969 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 05:55:43,971 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 05:55:43,971 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 05:55:43,971 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 05:55:43,971 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 05:55:43,971 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 05:55:43,972 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 05:55:43,972 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 05:55:43,972 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 05:55:43,972 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 05:55:43,972 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 05:55:43,973 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 05:55:43,973 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 05:55:43,973 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 05:55:43,976 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 05:55:43,976 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 05:55:44,038 INFO ]: Repository-Root is: /tmp [2018-06-22 05:55:44,097 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 05:55:44,103 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 05:55:44,104 INFO ]: Initializing SmtParser... [2018-06-22 05:55:44,105 INFO ]: SmtParser initialized [2018-06-22 05:55:44,105 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/seq-sim.c.smt2 [2018-06-22 05:55:44,131 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 05:55:44,557 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/seq-sim.c.smt2 unknown [2018-06-22 05:55:45,327 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/seq-sim.c.smt2 [2018-06-22 05:55:45,334 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 05:55:45,341 INFO ]: Walking toolchain with 4 elements. [2018-06-22 05:55:45,341 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 05:55:45,341 INFO ]: Initializing ChcToBoogie... [2018-06-22 05:55:45,341 INFO ]: ChcToBoogie initialized [2018-06-22 05:55:45,428 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:55:45" (1/1) ... [2018-06-22 05:55:45,526 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:55:45 Unit [2018-06-22 05:55:45,526 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 05:55:45,531 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 05:55:45,531 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 05:55:45,531 INFO ]: Boogie Preprocessor initialized [2018-06-22 05:55:45,561 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:55:45" (1/1) ... [2018-06-22 05:55:45,562 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:55:45" (1/1) ... [2018-06-22 05:55:45,568 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:55:45" (1/1) ... [2018-06-22 05:55:45,568 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:55:45" (1/1) ... [2018-06-22 05:55:45,573 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:55:45" (1/1) ... [2018-06-22 05:55:45,577 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:55:45" (1/1) ... [2018-06-22 05:55:45,578 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:55:45" (1/1) ... [2018-06-22 05:55:45,581 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 05:55:45,581 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 05:55:45,581 INFO ]: Initializing RCFGBuilder... [2018-06-22 05:55:45,581 INFO ]: RCFGBuilder initialized [2018-06-22 05:55:45,582 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:55:45" (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 05:55:45,613 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 05:55:45,613 INFO ]: Found specification of procedure gotoProc [2018-06-22 05:55:45,613 INFO ]: Found implementation of procedure gotoProc [2018-06-22 05:55:45,613 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 05:55:45,613 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 05:55:45,613 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 05:55:46,179 INFO ]: Using library mode [2018-06-22 05:55:46,180 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:55:46 BoogieIcfgContainer [2018-06-22 05:55:46,180 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 05:55:46,182 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 05:55:46,182 INFO ]: Initializing TraceAbstraction... [2018-06-22 05:55:46,200 INFO ]: TraceAbstraction initialized [2018-06-22 05:55:46,200 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:55:45" (1/3) ... [2018-06-22 05:55:46,201 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161b0c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 05:55:46, skipping insertion in model container [2018-06-22 05:55:46,201 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:55:45" (2/3) ... [2018-06-22 05:55:46,201 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161b0c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:55:46, skipping insertion in model container [2018-06-22 05:55:46,202 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:55:46" (3/3) ... [2018-06-22 05:55:46,203 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 05:55:46,240 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 05:55:46,275 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 05:55:46,847 INFO ]: Using default assertion order modulation [2018-06-22 05:55:46,848 INFO ]: Interprodecural is true [2018-06-22 05:55:46,848 INFO ]: Hoare is false [2018-06-22 05:55:46,848 INFO ]: Compute interpolants for FPandBP [2018-06-22 05:55:46,848 INFO ]: Backedges is TWOTRACK [2018-06-22 05:55:46,848 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 05:55:46,848 INFO ]: Difference is false [2018-06-22 05:55:46,848 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 05:55:46,848 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 05:55:46,895 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 05:55:46,911 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 05:55:46,911 INFO ]: Found error trace [2018-06-22 05:55:46,912 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:55:46,913 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:55:46,937 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 05:55:46,949 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:55:46,949 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:55:47,022 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:55:47,022 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:55:47,023 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:55:47,201 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:55:47,436 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:55:47,439 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 05:55:47,439 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 05:55:47,441 INFO ]: Interpolant automaton has 3 states [2018-06-22 05:55:47,546 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 05:55:47,547 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:55:47,724 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 05:55:48,121 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:55:48,121 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 05:55:48,122 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 05:55:48,148 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 05:55:48,149 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:55:48,212 INFO ]: With dead ends: 9 [2018-06-22 05:55:48,212 INFO ]: Without dead ends: 9 [2018-06-22 05:55:48,267 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 05:55:48,371 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 05:55:48,399 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 05:55:48,400 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 05:55:48,401 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 05:55:48,403 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 05:55:48,403 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:55:48,403 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 05:55:48,403 INFO ]: Interpolant automaton has 3 states. [2018-06-22 05:55:48,403 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 05:55:48,403 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 05:55:48,403 INFO ]: Found error trace [2018-06-22 05:55:48,403 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:55:48,404 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:55:48,404 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 05:55:48,404 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:55:48,404 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:55:48,405 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:55:48,405 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:55:48,405 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:55:48,460 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:55:48,570 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:55:48,570 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:55:48,570 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 05:55:48,578 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:55:48,628 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:55:48,641 INFO ]: Computing forward predicates... [2018-06-22 05:55:49,489 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:55:49,527 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:55:49,527 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 05:55:49,528 INFO ]: Interpolant automaton has 5 states [2018-06-22 05:55:49,528 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 05:55:49,528 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 05:55:49,528 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 05:55:49,750 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:55:49,750 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 05:55:49,752 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 05:55:49,752 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 05:55:49,752 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:55:49,752 INFO ]: With dead ends: 11 [2018-06-22 05:55:49,752 INFO ]: Without dead ends: 11 [2018-06-22 05:55:49,753 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-22 05:55:49,753 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 05:55:49,754 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 05:55:49,755 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 05:55:49,755 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 05:55:49,755 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 05:55:49,755 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:55:49,755 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 05:55:49,755 INFO ]: Interpolant automaton has 5 states. [2018-06-22 05:55:49,755 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 05:55:49,755 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 05:55:49,756 INFO ]: Found error trace [2018-06-22 05:55:49,756 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:55:49,757 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:55:49,757 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 2 times [2018-06-22 05:55:49,757 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:55:49,757 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:55:49,758 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:55:49,758 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:55:49,758 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:55:49,859 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:55:50,180 WARN ]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-22 05:55:50,209 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:55:50,209 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:55:50,209 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 05:55:50,217 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 05:55:50,294 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 05:55:50,294 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:55:50,298 INFO ]: Computing forward predicates... [2018-06-22 05:55:52,768 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:55:52,791 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:55:52,791 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-22 05:55:52,791 INFO ]: Interpolant automaton has 7 states [2018-06-22 05:55:52,791 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 05:55:52,791 INFO ]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-06-22 05:55:52,791 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2018-06-22 05:55:52,912 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:55:52,912 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 05:55:52,912 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 05:55:52,912 INFO ]: Start accepts. Automaton has 7 states. Word has length 10 [2018-06-22 05:55:52,912 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:55:52,912 INFO ]: With dead ends: 13 [2018-06-22 05:55:52,912 INFO ]: Without dead ends: 13 [2018-06-22 05:55:52,913 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-06-22 05:55:52,913 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 05:55:52,914 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 05:55:52,914 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 05:55:52,915 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 05:55:52,915 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-22 05:55:52,915 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:55:52,915 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 05:55:52,915 INFO ]: Interpolant automaton has 7 states. [2018-06-22 05:55:52,915 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 05:55:52,915 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 05:55:52,915 INFO ]: Found error trace [2018-06-22 05:55:52,915 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:55:52,916 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:55:52,916 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 3 times [2018-06-22 05:55:52,916 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:55:52,916 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:55:52,917 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:55:52,917 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:55:52,917 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:55:52,977 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:55:53,240 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:55:53,240 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:55:53,240 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 05:55:53,247 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 05:55:53,322 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 05:55:53,322 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:55:53,327 INFO ]: Computing forward predicates... [2018-06-22 05:56:21,296 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:56:21,321 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:56:21,330 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:56:21,339 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:56:21,350 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:56:21,371 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:56:21,598 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:56:21,611 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:56:21,623 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:56:21,714 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 05:56:21,889 WARN ]: Simplifying disjunction of 13680 conjuctions. This might take some time... [2018-06-22 05:56:23,391 INFO ]: Simplified to disjunction of 704 conjuctions. [2018-06-22 05:56:23,419 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 05:56:24,214 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 05:56:24,389 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 05:56:24,435 WARN ]: Simplifying disjunction of 9456 conjuctions. This might take some time... [2018-06-22 05:56:25,129 INFO ]: Simplified to disjunction of 704 conjuctions. [2018-06-22 05:56:25,782 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 05:56:25,836 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:56:25,864 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 05:56:26,136 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 05:56:26,303 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:56:26,309 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:56:26,370 WARN ]: expecting exponential blowup for input size 8 Received shutdown request... [2018-06-22 05:56:51,683 INFO ]: Timeout while computing interpolants [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Forcibly destroying the process [2018-06-22 05:56:51,883 WARN ]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:56:51,884 WARN ]: Verification canceled [2018-06-22 05:56:52,018 WARN ]: Timeout [2018-06-22 05:56:52,018 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:56:52 BoogieIcfgContainer [2018-06-22 05:56:52,018 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 05:56:52,031 INFO ]: Toolchain (without parser) took 66696.89 ms. Allocated memory was 304.6 MB in the beginning and 1.7 GB in the end (delta: 1.3 GB). Free memory was 257.2 MB in the beginning and 1.1 GB in the end (delta: -826.7 MB). Peak memory consumption was 1.4 GB. Max. memory is 3.6 GB. [2018-06-22 05:56:52,032 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 304.6 MB. Free memory is still 269.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 05:56:52,033 INFO ]: ChcToBoogie took 189.05 ms. Allocated memory is still 304.6 MB. Free memory was 255.2 MB in the beginning and 253.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:56:52,033 INFO ]: Boogie Preprocessor took 49.92 ms. Allocated memory is still 304.6 MB. Free memory is still 253.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 05:56:52,034 INFO ]: RCFGBuilder took 598.93 ms. Allocated memory is still 304.6 MB. Free memory was 253.2 MB in the beginning and 241.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:56:52,034 INFO ]: TraceAbstraction took 65836.41 ms. Allocated memory was 304.6 MB in the beginning and 1.7 GB in the end (delta: 1.3 GB). Free memory was 241.2 MB in the beginning and 1.1 GB in the end (delta: -842.6 MB). Peak memory consumption was 1.4 GB. Max. memory is 3.6 GB. [2018-06-22 05:56:52,039 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 304.6 MB. Free memory is still 269.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 189.05 ms. Allocated memory is still 304.6 MB. Free memory was 255.2 MB in the beginning and 253.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 49.92 ms. Allocated memory is still 304.6 MB. Free memory is still 253.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * RCFGBuilder took 598.93 ms. Allocated memory is still 304.6 MB. Free memory was 253.2 MB in the beginning and 241.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 65836.41 ms. Allocated memory was 304.6 MB in the beginning and 1.7 GB in the end (delta: 1.3 GB). Free memory was 241.2 MB in the beginning and 1.1 GB in the end (delta: -842.6 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 139680 quantified variables from 17 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 65.2s OverallTime, 4 OverallIterations, 5 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 3 SDslu, 42 SDs, 0 SdLazy, 18 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.0s 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, 3.9s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 902 SizeOfPredicates, 10 NumberOfNonLiveVariables, 266 ConjunctsInSsa, 42 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/seq-sim.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_05-56-52-096.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/seq-sim.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_05-56-52-096.csv Completed graceful shutdown