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_No_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/ctigar/bind_expands_vars2.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 14:50:27,603 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 14:50:27,605 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 14:50:27,616 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 14:50:27,616 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 14:50:27,617 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 14:50:27,618 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 14:50:27,620 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 14:50:27,621 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 14:50:27,622 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 14:50:27,623 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 14:50:27,623 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 14:50:27,624 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 14:50:27,625 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 14:50:27,626 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 14:50:27,626 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 14:50:27,628 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 14:50:27,630 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 14:50:27,632 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 14:50:27,633 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 14:50:27,634 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 14:50:27,636 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 14:50:27,636 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 14:50:27,637 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 14:50:27,638 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 14:50:27,639 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 14:50:27,639 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 14:50:27,640 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 14:50:27,641 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 14:50:27,642 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 14:50:27,642 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 14:50:27,643 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 14:50:27,643 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 14:50:27,644 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 14:50:27,645 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 14:50:27,645 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 14:50:27,658 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 14:50:27,659 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 14:50:27,659 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 14:50:27,659 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 14:50:27,660 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 14:50:27,660 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 14:50:27,661 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 14:50:27,661 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 14:50:27,661 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 14:50:27,662 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 14:50:27,662 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 14:50:27,662 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 14:50:27,662 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 14:50:27,663 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 14:50:27,663 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 14:50:27,663 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 14:50:27,663 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 14:50:27,664 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 14:50:27,664 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 14:50:27,665 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 14:50:27,666 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 14:50:27,699 INFO ]: Repository-Root is: /tmp [2018-06-22 14:50:27,716 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 14:50:27,722 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 14:50:27,723 INFO ]: Initializing SmtParser... [2018-06-22 14:50:27,724 INFO ]: SmtParser initialized [2018-06-22 14:50:27,724 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/bind_expands_vars2.c.smt2 [2018-06-22 14:50:27,725 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 14:50:27,814 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/bind_expands_vars2.c.smt2 unknown [2018-06-22 14:50:28,098 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/bind_expands_vars2.c.smt2 [2018-06-22 14:50:28,103 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 14:50:28,111 INFO ]: Walking toolchain with 4 elements. [2018-06-22 14:50:28,111 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 14:50:28,111 INFO ]: Initializing ChcToBoogie... [2018-06-22 14:50:28,112 INFO ]: ChcToBoogie initialized [2018-06-22 14:50:28,115 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:50:28" (1/1) ... [2018-06-22 14:50:28,156 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:50:28 Unit [2018-06-22 14:50:28,156 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 14:50:28,157 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 14:50:28,157 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 14:50:28,157 INFO ]: Boogie Preprocessor initialized [2018-06-22 14:50:28,176 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:50:28" (1/1) ... [2018-06-22 14:50:28,176 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:50:28" (1/1) ... [2018-06-22 14:50:28,186 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:50:28" (1/1) ... [2018-06-22 14:50:28,186 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:50:28" (1/1) ... [2018-06-22 14:50:28,199 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:50:28" (1/1) ... [2018-06-22 14:50:28,201 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:50:28" (1/1) ... [2018-06-22 14:50:28,202 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:50:28" (1/1) ... [2018-06-22 14:50:28,203 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 14:50:28,204 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 14:50:28,204 INFO ]: Initializing RCFGBuilder... [2018-06-22 14:50:28,204 INFO ]: RCFGBuilder initialized [2018-06-22 14:50:28,213 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:50:28" (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 14:50:28,234 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 14:50:28,234 INFO ]: Found specification of procedure False [2018-06-22 14:50:28,234 INFO ]: Found implementation of procedure False [2018-06-22 14:50:28,234 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 14:50:28,234 INFO ]: Found specification of procedure state [2018-06-22 14:50:28,234 INFO ]: Found implementation of procedure state [2018-06-22 14:50:28,234 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 14:50:28,234 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 14:50:28,234 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 14:50:28,493 INFO ]: Using library mode [2018-06-22 14:50:28,493 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:50:28 BoogieIcfgContainer [2018-06-22 14:50:28,493 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 14:50:28,495 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 14:50:28,495 INFO ]: Initializing TraceAbstraction... [2018-06-22 14:50:28,505 INFO ]: TraceAbstraction initialized [2018-06-22 14:50:28,505 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:50:28" (1/3) ... [2018-06-22 14:50:28,506 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a0bbcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 02:50:28, skipping insertion in model container [2018-06-22 14:50:28,506 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:50:28" (2/3) ... [2018-06-22 14:50:28,506 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a0bbcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 02:50:28, skipping insertion in model container [2018-06-22 14:50:28,506 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:50:28" (3/3) ... [2018-06-22 14:50:28,508 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 14:50:28,519 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 14:50:28,528 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 14:50:28,565 INFO ]: Using default assertion order modulation [2018-06-22 14:50:28,565 INFO ]: Interprodecural is true [2018-06-22 14:50:28,565 INFO ]: Hoare is false [2018-06-22 14:50:28,565 INFO ]: Compute interpolants for FPandBP [2018-06-22 14:50:28,565 INFO ]: Backedges is TWOTRACK [2018-06-22 14:50:28,565 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 14:50:28,565 INFO ]: Difference is false [2018-06-22 14:50:28,565 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 14:50:28,565 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 14:50:28,579 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 14:50:28,593 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 14:50:28,593 INFO ]: Found error trace [2018-06-22 14:50:28,594 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:50:28,594 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:50:28,600 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 14:50:28,602 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:50:28,602 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:50:28,636 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:50:28,636 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:50:28,636 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:50:28,662 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:50:28,743 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 14:50:28,746 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 14:50:28,746 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 14:50:28,748 INFO ]: Interpolant automaton has 4 states [2018-06-22 14:50:28,759 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 14:50:28,759 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 14:50:28,761 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 14:50:28,830 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:50:28,830 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 14:50:28,830 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 14:50:28,831 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 14:50:28,832 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:50:28,839 INFO ]: With dead ends: 13 [2018-06-22 14:50:28,840 INFO ]: Without dead ends: 13 [2018-06-22 14:50:28,841 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 14:50:28,853 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 14:50:28,873 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 14:50:28,874 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 14:50:28,874 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 14:50:28,875 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 14:50:28,875 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:50:28,875 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 14:50:28,875 INFO ]: Interpolant automaton has 4 states. [2018-06-22 14:50:28,875 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 14:50:28,876 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 14:50:28,876 INFO ]: Found error trace [2018-06-22 14:50:28,877 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:50:28,877 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:50:28,877 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 14:50:28,877 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:50:28,877 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:50:28,878 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:50:28,878 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:50:28,878 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:50:28,914 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:50:29,122 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:50:29,123 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:50:29,123 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 14:50:29,132 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:50:29,170 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:50:29,180 INFO ]: Computing forward predicates... [2018-06-22 14:50:29,438 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:50:29,472 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:50:29,472 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-06-22 14:50:29,472 INFO ]: Interpolant automaton has 6 states [2018-06-22 14:50:29,472 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 14:50:29,473 INFO ]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-22 14:50:29,473 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 6 states. [2018-06-22 14:50:29,610 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:50:29,610 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 14:50:29,611 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 14:50:29,611 INFO ]: Start accepts. Automaton has 6 states. Word has length 13 [2018-06-22 14:50:29,611 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:50:29,611 INFO ]: With dead ends: 15 [2018-06-22 14:50:29,611 INFO ]: Without dead ends: 15 [2018-06-22 14:50:29,612 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-22 14:50:29,612 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 14:50:29,617 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 14:50:29,618 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 14:50:29,618 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 14:50:29,618 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 14:50:29,618 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:50:29,618 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 14:50:29,618 INFO ]: Interpolant automaton has 6 states. [2018-06-22 14:50:29,618 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 14:50:29,619 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 14:50:29,619 INFO ]: Found error trace [2018-06-22 14:50:29,619 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:50:29,619 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:50:29,619 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 14:50:29,619 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:50:29,619 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:50:29,620 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:50:29,620 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:50:29,620 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:50:29,699 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:50:30,171 WARN ]: Spent 198.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 14 [2018-06-22 14:50:30,374 WARN ]: Spent 100.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-06-22 14:50:30,411 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 14:50:30,411 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:50:30,411 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 14:50:30,419 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 14:50:30,445 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 14:50:30,445 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:50:30,448 INFO ]: Computing forward predicates... [2018-06-22 14:50:30,652 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 14:50:30,671 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:50:30,671 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-06-22 14:50:30,672 INFO ]: Interpolant automaton has 8 states [2018-06-22 14:50:30,672 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 14:50:30,672 INFO ]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-06-22 14:50:30,672 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 8 states. [2018-06-22 14:50:31,082 WARN ]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-06-22 14:50:31,322 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:50:31,322 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 14:50:31,322 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 14:50:31,322 INFO ]: Start accepts. Automaton has 8 states. Word has length 17 [2018-06-22 14:50:31,322 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:50:31,323 INFO ]: With dead ends: 17 [2018-06-22 14:50:31,323 INFO ]: Without dead ends: 17 [2018-06-22 14:50:31,323 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-06-22 14:50:31,323 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 14:50:31,326 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 14:50:31,326 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 14:50:31,327 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 14:50:31,327 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 14:50:31,327 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:50:31,327 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 14:50:31,327 INFO ]: Interpolant automaton has 8 states. [2018-06-22 14:50:31,327 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 14:50:31,328 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 14:50:31,328 INFO ]: Found error trace [2018-06-22 14:50:31,328 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:50:31,328 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:50:31,328 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 14:50:31,328 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:50:31,328 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:50:31,329 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:50:31,329 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:50:31,329 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:50:31,362 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:50:31,655 WARN ]: Spent 113.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-06-22 14:50:31,881 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:50:31,882 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:50:31,882 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 14:50:31,896 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 14:50:31,926 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 14:50:31,926 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:50:31,930 INFO ]: Computing forward predicates... [2018-06-22 14:50:32,094 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:50:32,125 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:50:32,125 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-06-22 14:50:32,125 INFO ]: Interpolant automaton has 10 states [2018-06-22 14:50:32,126 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 14:50:32,126 INFO ]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-06-22 14:50:32,126 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 10 states. [2018-06-22 14:50:32,498 WARN ]: Spent 169.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 14 [2018-06-22 14:50:32,673 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:50:32,674 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 14:50:32,675 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 14:50:32,675 INFO ]: Start accepts. Automaton has 10 states. Word has length 21 [2018-06-22 14:50:32,675 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:50:32,676 INFO ]: With dead ends: 19 [2018-06-22 14:50:32,676 INFO ]: Without dead ends: 19 [2018-06-22 14:50:32,676 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-06-22 14:50:32,676 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 14:50:32,679 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 14:50:32,679 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 14:50:32,680 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 14:50:32,680 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 14:50:32,680 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:50:32,680 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 14:50:32,680 INFO ]: Interpolant automaton has 10 states. [2018-06-22 14:50:32,680 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 14:50:32,680 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 14:50:32,680 INFO ]: Found error trace [2018-06-22 14:50:32,681 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:50:32,681 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:50:32,681 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-22 14:50:32,681 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:50:32,681 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:50:32,682 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:50:32,682 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:50:32,682 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:50:32,742 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:50:33,023 WARN ]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2018-06-22 14:50:33,232 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 14:50:33,232 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:50:33,252 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:50:33,258 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 14:50:33,295 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 14:50:33,295 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:50:33,299 INFO ]: Computing forward predicates... [2018-06-22 14:50:33,716 WARN ]: Spent 296.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 24 [2018-06-22 14:50:33,868 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 14:50:33,887 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:50:33,888 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2018-06-22 14:50:33,888 INFO ]: Interpolant automaton has 13 states [2018-06-22 14:50:33,888 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 14:50:33,888 INFO ]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-06-22 14:50:33,888 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 13 states. [2018-06-22 14:50:34,417 WARN ]: Spent 140.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 26 [2018-06-22 14:50:34,433 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:50:34,433 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 14:50:34,438 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 14:50:34,438 INFO ]: Start accepts. Automaton has 13 states. Word has length 25 [2018-06-22 14:50:34,438 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:50:34,439 INFO ]: With dead ends: 21 [2018-06-22 14:50:34,439 INFO ]: Without dead ends: 21 [2018-06-22 14:50:34,439 INFO ]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-06-22 14:50:34,439 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 14:50:34,445 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 14:50:34,445 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 14:50:34,445 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 14:50:34,445 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-22 14:50:34,446 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:50:34,446 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 14:50:34,446 INFO ]: Interpolant automaton has 13 states. [2018-06-22 14:50:34,446 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 14:50:34,446 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 14:50:34,446 INFO ]: Found error trace [2018-06-22 14:50:34,448 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:50:34,448 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:50:34,448 INFO ]: Analyzing trace with hash 853117551, now seen corresponding path program 5 times [2018-06-22 14:50:34,448 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:50:34,448 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:50:34,449 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:50:34,449 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:50:34,449 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:50:34,496 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:50:35,272 WARN ]: Spent 323.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 20 [2018-06-22 14:50:35,465 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 14:50:35,466 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:50:35,466 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:50:35,472 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 14:50:35,515 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-22 14:50:35,515 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:50:35,519 INFO ]: Computing forward predicates... [2018-06-22 14:50:38,226 WARN ]: Spent 2.26 s on a formula simplification. DAG size of input: 29 DAG size of output: 21 [2018-06-22 14:50:38,701 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 14:50:38,721 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:50:38,721 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2018-06-22 14:50:38,721 INFO ]: Interpolant automaton has 15 states [2018-06-22 14:50:38,722 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 14:50:38,722 INFO ]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2018-06-22 14:50:38,722 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 15 states. [2018-06-22 14:50:38,886 WARN ]: Spent 144.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2018-06-22 14:50:39,290 WARN ]: Spent 132.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 20 [2018-06-22 14:50:39,446 WARN ]: Spent 137.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 31 [2018-06-22 14:50:39,464 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:50:39,464 INFO ]: Finished difference Result 23 states and 24 transitions. [2018-06-22 14:50:39,468 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 14:50:39,468 INFO ]: Start accepts. Automaton has 15 states. Word has length 29 [2018-06-22 14:50:39,468 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:50:39,469 INFO ]: With dead ends: 23 [2018-06-22 14:50:39,469 INFO ]: Without dead ends: 23 [2018-06-22 14:50:39,469 INFO ]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2018-06-22 14:50:39,469 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 14:50:39,472 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-22 14:50:39,472 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 14:50:39,473 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-06-22 14:50:39,473 INFO ]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 29 [2018-06-22 14:50:39,473 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:50:39,473 INFO ]: Abstraction has 23 states and 24 transitions. [2018-06-22 14:50:39,473 INFO ]: Interpolant automaton has 15 states. [2018-06-22 14:50:39,473 INFO ]: Start isEmpty. Operand 23 states and 24 transitions. [2018-06-22 14:50:39,474 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 14:50:39,474 INFO ]: Found error trace [2018-06-22 14:50:39,474 INFO ]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:50:39,475 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:50:39,475 INFO ]: Analyzing trace with hash -1661294575, now seen corresponding path program 6 times [2018-06-22 14:50:39,475 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:50:39,475 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:50:39,476 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:50:39,476 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:50:39,476 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:50:39,528 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:50:40,154 WARN ]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-06-22 14:50:40,869 WARN ]: Spent 635.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-06-22 14:50:41,315 INFO ]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 14:50:41,315 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:50:41,315 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:50:41,323 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 14:50:41,373 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-06-22 14:50:41,373 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:50:41,377 INFO ]: Computing forward predicates... [2018-06-22 14:50:43,478 WARN ]: Spent 281.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 5 [2018-06-22 14:50:43,491 INFO ]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 14:50:43,524 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:50:43,525 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 20 [2018-06-22 14:50:43,525 INFO ]: Interpolant automaton has 20 states [2018-06-22 14:50:43,525 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 14:50:43,525 INFO ]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2018-06-22 14:50:43,525 INFO ]: Start difference. First operand 23 states and 24 transitions. Second operand 20 states. [2018-06-22 14:50:44,759 WARN ]: Spent 571.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2018-06-22 14:50:44,990 WARN ]: Spent 113.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 25 [2018-06-22 14:50:45,559 WARN ]: Spent 286.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 25 [2018-06-22 14:50:45,886 WARN ]: Spent 181.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2018-06-22 14:50:45,912 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:50:45,912 INFO ]: Finished difference Result 25 states and 26 transitions. [2018-06-22 14:50:45,913 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 14:50:45,913 INFO ]: Start accepts. Automaton has 20 states. Word has length 33 [2018-06-22 14:50:45,913 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:50:45,914 INFO ]: With dead ends: 25 [2018-06-22 14:50:45,914 INFO ]: Without dead ends: 25 [2018-06-22 14:50:45,914 INFO ]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=160, Invalid=596, Unknown=0, NotChecked=0, Total=756 [2018-06-22 14:50:45,915 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-22 14:50:45,918 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-06-22 14:50:45,918 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-22 14:50:45,919 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-06-22 14:50:45,919 INFO ]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 33 [2018-06-22 14:50:45,919 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:50:45,919 INFO ]: Abstraction has 25 states and 26 transitions. [2018-06-22 14:50:45,919 INFO ]: Interpolant automaton has 20 states. [2018-06-22 14:50:45,919 INFO ]: Start isEmpty. Operand 25 states and 26 transitions. [2018-06-22 14:50:45,920 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 14:50:45,920 INFO ]: Found error trace [2018-06-22 14:50:45,920 INFO ]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:50:45,920 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:50:45,921 INFO ]: Analyzing trace with hash -1494134477, now seen corresponding path program 7 times [2018-06-22 14:50:45,921 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:50:45,921 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:50:45,921 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:50:45,921 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:50:45,921 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:50:46,019 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:50:46,685 WARN ]: Spent 381.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2018-06-22 14:50:46,974 WARN ]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2018-06-22 14:50:47,614 INFO ]: Checked inductivity of 105 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-06-22 14:50:47,615 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:50:47,615 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:50:47,632 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:50:47,677 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:50:47,682 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-22 14:51:34,806 WARN ]: Removed 2 from assertion stack [2018-06-22 14:51:34,806 INFO ]: Timeout while computing interpolants [2018-06-22 14:51:35,007 WARN ]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:51:35,007 WARN ]: Verification canceled [2018-06-22 14:51:35,010 WARN ]: Timeout [2018-06-22 14:51:35,010 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 02:51:35 BoogieIcfgContainer [2018-06-22 14:51:35,010 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 14:51:35,011 INFO ]: Toolchain (without parser) took 66908.19 ms. Allocated memory was 306.7 MB in the beginning and 853.0 MB in the end (delta: 546.3 MB). Free memory was 260.1 MB in the beginning and 394.2 MB in the end (delta: -134.1 MB). Peak memory consumption was 640.2 MB. Max. memory is 3.6 GB. [2018-06-22 14:51:35,012 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 14:51:35,012 INFO ]: ChcToBoogie took 44.96 ms. Allocated memory is still 306.7 MB. Free memory was 260.1 MB in the beginning and 258.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:51:35,013 INFO ]: Boogie Preprocessor took 46.74 ms. Allocated memory is still 306.7 MB. Free memory was 258.1 MB in the beginning and 257.1 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 3.6 GB. [2018-06-22 14:51:35,013 INFO ]: RCFGBuilder took 289.39 ms. Allocated memory is still 306.7 MB. Free memory was 257.1 MB in the beginning and 248.1 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:51:35,014 INFO ]: TraceAbstraction took 66515.58 ms. Allocated memory was 306.7 MB in the beginning and 853.0 MB in the end (delta: 546.3 MB). Free memory was 248.1 MB in the beginning and 394.2 MB in the end (delta: -146.0 MB). Peak memory consumption was 628.3 MB. Max. memory is 3.6 GB. [2018-06-22 14:51:35,019 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 44.96 ms. Allocated memory is still 306.7 MB. Free memory was 260.1 MB in the beginning and 258.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 46.74 ms. Allocated memory is still 306.7 MB. Free memory was 258.1 MB in the beginning and 257.1 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 3.6 GB. * RCFGBuilder took 289.39 ms. Allocated memory is still 306.7 MB. Free memory was 257.1 MB in the beginning and 248.1 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 66515.58 ms. Allocated memory was 306.7 MB in the beginning and 853.0 MB in the end (delta: 546.3 MB). Free memory was 248.1 MB in the beginning and 394.2 MB in the end (delta: -146.0 MB). Peak memory consumption was 628.3 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 38 with TraceHistMax 8, while TraceCheckSpWp was constructing forward predicates, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 3258. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 66.4s OverallTime, 8 OverallIterations, 8 TraceHistogramMax, 5.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 86 SDtfs, 128 SDslu, 332 SDs, 0 SdLazy, 293 SolverSat, 163 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 227 GetRequests, 119 SyntacticMatches, 21 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 12.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=7, 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 11.2s InterpolantComputationTime, 285 NumberOfCodeBlocks, 285 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 272 ConstructedInterpolants, 0 QuantifiedInterpolants, 51592 SizeOfPredicates, 318 NumberOfNonLiveVariables, 981 ConjunctsInSsa, 179 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 112/406 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/bind_expands_vars2.c.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_14-51-35-029.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/bind_expands_vars2.c.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_14-51-35-029.csv Completed graceful shutdown